[netchef]

Originally Posted by fi.robin

I guess config2 is 4 cylinders. We are offered config1 for better FE.

fi.robin: I wish they'd given us the quad rather than the waltzing-Mathilda. But beyond the sheer HP, it's psychological me thinks.

[k_ajay]

Originally Posted by fi.robin

I did receive SMS on this from Skoda. May be I can come along too. I have been to that place N number of times.

Originally Posted by netchef

k_ajay/fi.robin:
I'm planning to go tomorrow/the day after, but I've yet to speak with them to explore the availability of the slot. Shall let you know.

No problem if we ride together in the least.

Well, I'd be happy to find someone to tag along with and understand the route, but I have a constraint. I won't be able to visit on weekdays and can only take my car on the weekends.

Is anyone planning to go this Saturday (04.Apr) late noon or evening? If yes, then I'll make a call today and book the slot, and we can go together.. Please let me know.

Originally Posted by Mysticeyes

Seems some fabiosis are already queing up outside NC's home for hitching a ride in R1. Please count me in too NC. You can have a cup of iced tea on my tab. If possible, I'm planning a Bangalore trip during the 2nd week of April, when there are few holidays thrown around. Shall I knock at the Fabiosi club door?Would I be thrown off? Remember, I got a very trigger happy, itchy camera finger nowadays

You're more than welcome to pay us a visit Mysticeyes; will be nice to see a Fabiosi from another state. Thrown off?? Maybe off the R1 when you're doing 200 kays, if netchef gets one, by then

Originally Posted by Mysticeyes

@ K_ajay - driving constantly at about 50-60 kmph mark is always good for the economy, as I've experienced it. Its safe too and you can always have the time to look at Ms. daisies passing by, which is the added advantage. Guess fabiosis are becoming more and more considerate to fairer sex these days. No wonder the poetic words are flowing through.

I hope the economy improves due to driving at this speed band so the objective is achieved [burning lesser fuel]. Taking a look at Ms. Daisies passing by?? Hush, Sir. My own daisy at home won't take too well to that comment.. No more daisy watching. Aye?

[Mysticeyes]

Originally Posted by shykrish

Just called up Faizal@Marikar and confirmed that the camp is on here in Tvm too. Booked my slot for tomorrow, I am planning to come in around 11am, joining? Saw Rakesh's car today morning in the parking lot, so he is in town...

I rang up Marikkar now and confirmed the camp. But, I can take my cutie to the camp only on Saturday. So I got myself the slot at Saturday, 9.30 Am. Too bad that I can't make it for tomorrow. Or if you can by any chance push your date to Saturday, its most welcome.

No more daisy watching?? I'd better be stuck up in some lecture class rather than not having something eye pleasing. Saying all these, I'd better watch my back and make sure that my better half is not a TBHP member

[VKJ]

@netchef DD hills is about 40 kms near nelamangala, off the bangalore tumkur road. We can also take the BMIC NICE road to reach there.

@k_ajay If you wish to come to Vinayak, I can take you. I got the check up done today at vinayak.

@fi.robin The warranty period is for 2 years right, let's not worry, we will get that thing done under warranty itself.

[shykrish]

Originally Posted by Mysticeyes

@ K_ajay - driving constantly at about 50-60 kmph mark is always good for the economy, as I've experienced it. Its safe too and you can always have the time to look at Ms. daisies passing by, which is the added advantage. Guess fabiosis are becoming more and more considerate to fairer sex these days. No wonder the poetic words are flowing through.

Saw a few posts related to fuel economy, I have a doubt, could someone clear this up please.

The posts say that 45-55 is the ideal speed when the fuel consumption is least, but at that speed the rpm is around 1200 and the turbo is NOT ON.
My Belief is that the fuel efficiency is best at around 1700-1800 rpm in the 5th gear (not sure if its correct), if my above assumption is correct then the car is at around 80-90 km/h

Guys I am confused! please clear the air

[Invinsible]

MYSTICEYES: I see two different power delivery for the same 1.4 PD TDI engine of Fabia. In India the lower powered engine is offered. Anybody know how they are configured? Config1: Power - 51 kW (69 PS; 68 hp) @ 4000 rpm Torque - 155 N•m (114 lb•ft) @ 1600–2800 rpm Config2: Power - 59 kW (80 PS; 79 hp) @ 4000 rpm Torque - 195 N•m (144 lb•ft) @ 2200 rpm

Ah! Let me help you with that. Both the Spec you see comes from the same engine which is 3 cylinder, same bore and stroke, engine capacity. The thing that differs the power delivery here is the TURBO setup. The Config 1 is what we have runs on a different turbo V/s config2. Well the size of turbo remains the it's just that it has a different compressor wheels. With a slight change in turbo setup and bit change in fuel mapping this figure is achieved i.e. 80PS. Both use turbo made by Garrett.

Once the Audi was using this same engine in their A2 which had 90hp as compared to the 70 we have. All they did to get that figure was to change turbo to VGT turbo and changes in fuel mapping and other essential parameters.
Audi A2 - Wikipedia, the free encyclopedia

Here's another Audi A2 1.4tdi with 150PS souped up. It has a new turbo from 1.9TDI and a 6 speed gearbox instead of 5 speed previous one.

YouTube - Audi A2 1.4TDI 150PS/340NM 50-240Kmh + Dokuline

SKYRISH: My Belief is that the fuel efficiency is best at around 1700-1800 rpm in the 5th gear (not sure if its correct), if my above assumption is correct then the car is at around 80-90 km/h

At 85kmph it would be doing 2000rpm that's where the peak torque kicks in.
When I cruise at 90kmph I have seen fuel consumption of 3.6L/100kms.
Best would be to keep the needle above 1800 rpm incase it falls below that downshift so that the added torque helps in pulling the weight of the car consuming less fuel at the same time.

[fi.robin]

Originally Posted by k_ajay

Well, I'd be happy to find someone to tag along with and understand the route, but I have a constraint. I won't be able to visit on weekdays and can only take my car on the weekends.

Is anyone planning to go this Saturday (04.Apr) late noon or evening? If yes, then I'll make a call today and book the slot, and we can go together.. Please let me know.

Weekdays will be a problem for me as well. I will not advice evening, mechs start leaving early on Sat. I can come along on 04th April. It is a pain waiting there all alone. PM me.

@Invinsible: Good one!

@K_ajay: My pick would be 60-70 KMH. At 45-55 you are not in a comfortable position to be in 5th gear. It is in 5th gear that you save max fuel. I remember in my father's M800 manual it was mentioned 60 in top gear for best result. I have tried 80 with wonderful results. Of course at 90+, you can feel the difference straight away.

@VKJ :

@fi.robin The warranty period is for 2 years right, let's not worry, we will get that thing done under warranty itself.

Will count on you for that.

@MYSTICEYES: It will be great to meet you here. But I may be out on a trip to Kodaikanal between 7-11 April.

Originally Posted by shykrish

Saw a few posts related to fuel economy, I have a doubt, could someone clear this up please.

The posts say that 45-55 is the ideal speed when the fuel consumption is least, but at that speed the rpm is around 1200 and the turbo is NOT ON.
My Belief is that the fuel efficiency is best at around 1700-1800 rpm in the 5th gear (not sure if its correct), if my above assumption is correct then the car is at around 80-90 km/h

Guys I am confused! please clear the air

45-55 is the range where the bikes are comfortable. they the green band in that range. Remember it is a general ad. I would say top gear and 60-80 should work for Fabia. At 45-55 engine may be caught lugging in 5th gear. Not an ideal thing to do. I am sure we can find something in the manual.

Note from the Team-BHP Support Team : Please use the "edit" button if posting within 15 minutes of the first post, instead of creating another back-to-back post

Also use "Multi Quote" option for quoting Multiple posts.

[k_ajay]

Originally Posted by VKJ

@k_ajay If you wish to come to Vinayak, I can take you. I got the check up done today at vinayak..

That nice Vijay to offer that but I think for the car's goodness sake, I will take it to TAFE service center, since I purchased off them. Plus I don't know how will Vinayak take to see a competitor delaer's car. lol..

Btw Vijay, any notable difference post the 11 + 40 point check up camp??

Originally Posted by fi.robin

Weekdays will be a problem for me as well. I will not advice evening, mechs start leaving early on Sat. I can come along on 04th April. It is a pain waiting there all alone. PM me.

Robin, how comfortable are you to go on Sunday morning? I have committed to an install on Saturday morning till early noon, and from wat you say, late noon and evening are not a good time.

Let me know if Sunday morning [first thing] is fine and we can call and book same slots.. Lemme know [here or PM,whatever]..

[netchef]

Originally Posted by VKJ

@netchef DD hills is about 40 kms near nelamangala, off the bangalore tumkur road. We can also take the BMIC NICE road to reach there.

VKJ: Ok. Thanks. The NICE road is gorgeous. I rode my Fireblade there a couple of times and clocked the highest speeds I've done in any vehicle: 240 kmph.

Don't know how much traffic it has now- when we rode on it, stretches were still incomplete so it was not really open to public traffic. If it's still empty, it would be the ideal place to put our Fabias through their paces- if we are so inclined, of course.

Originally Posted by shykrish

Saw a few posts related to fuel economy, I have a doubt, could someone clear this up please.

The posts say that 45-55 is the ideal speed when the fuel consumption is least, but at that speed the rpm is around 1200 and the turbo is NOT ON.
My Belief is that the fuel efficiency is best at around 1700-1800 rpm in the 5th gear (not sure if its correct), if my above assumption is correct then the car is at around 80-90 km/h

Guys I am confused! please clear the air

shykrish: IMO the turbo kicks in to serve a purpose- that of delivering power when the curve is beginning to look a little lame. I don't believe you HAVE to run the machine in that band just to get the turbo ticking. If it's designed to shore-up BHP and only when the engine is spinning at a certain RPM, it's likely the engineers knew there was adequate BHP available below that RPM (for what the car was meant to do: NOT tow a caravan, for instance). I don't think it's necessary -in the interests of optimising fuel consumption- to 'activate' the turbo simply because it's there. More important would be to ensure the engine is not being strained for the load, and to use the appropriate gear ratio for the load and speed.

Many people are under the false notion that getting the car in 5th A.S.A.P will get them better fuel consumption figures- but I often find them straining the engine to achieve this. An improvement of a half km extra per litre at the cost of a ruined big end bearing hardly makes sense.

Originally Posted by Invinsible

Ah! Let me help you with that. Both the Spec you see comes from the same engine which is 3 cylinder, same bore and stroke, engine capacity. The thing that differs the power delivery here is the TURBO setup. ... Both use turbo made by Garrett.

Once the Audi was using this same engine in their A2 which had 90hp as compared to the 70 we have.
Here's another Audi A2 1.4tdi with 150PS souped up.

Invinsible: Audi have always worked magic with their engines.

Originally Posted by fi.robin

At 45-55 engine may be caught lugging in 5th gear. Not an ideal thing to do.

fi.robin: Precisely!

Originally Posted by k_ajay

That nice Vijay to offer that but I think for the car's goodness sake, I will take it to TAFE service center, since I purchased off them.

Let me know if Sunday morning [first thing] is fine and we can call and book same slots.. Lemme know [here or PM,whatever]..

k_ajay: Sorry guys/Monsieur Ajay- I'll have to go during the week as their Service Centre is just 200 metres from my office.

[Invinsible]

NETCHEF:

shykrish: IMO the turbo kicks in to serve a purpose- that of delivering power when the curve is beginning to look a little lame. I don't believe you HAVE to run the machine in that band just to get the turbo ticking. If it's designed to shore-up BHP and only when the engine is spinning at a certain RPM, it's likely the engineers knew there was adequate BHP available below that RPM (for what the car was meant to do: NOT tow a caravan, for instance). I don't think it's necessary -in the interests of optimising fuel consumption- to 'activate' the turbo simply because it's there. More important would be to ensure the engine is not being strained for the load, and to use the appropriate gear ratio for the load and speed.

Let me add something here.
A turbocharger is an exhaust gas-driven turbine that compresses the intake air, increasing the horsepower and torque of an engine by increasing volumetric efficiency. THere is difference in boost pressure at various RPM levels. Peak boost at which the turbo works at it's full potential comes in at 2200RPM. That is the point where one would see a difference in pick up that's coz the turbo is operating at this point with maximum boost and the result is you get the peak torque early at Rev band compared to the Horsepower which is achieved at 4000rpm. This sudden rush of torque makes you feel there is sudden rush of power. The boost pressure that manufacturers set here is around 12-14 PSI.

Incase of Fabia 1.4tdi you get 155NM of torque at between 1600-2800rpm which means turbo starts operating at full boost once crossing 1600 rpm all the way upto 2800rpm after which the torque level starts geting low.
Until you reach 1600-2000 rpm you always see there is a lag in pick up and once it crosses this mark you see a sudden rush as I said that's coz turbo is working on full boost at that level and that's we say "when turbo kicks in".
TURBO LAG:
The period between pushing on the throttle pedal and feeling the rush of acceleration is commonly referred to as lag. Lag is a symptom of the time it takes for the exhaust turbine wheel to overcome its rotational inertia and for the intake impeller to create positive pressure in the intake. Just remember that although it changes the feeling of the power curve, a turbo car usually makes more power over every part of the power curve compared to an identical non turbo car.

Lag can be reduced by lowering the rotational inertia of the turbine or by use of ball bearings. Manufacturers may use lighter parts such as ceramic turbo wheels to allow faster spool-up. Another way to reduce lag is to change the aspect ratio of the turbine by reducing the diameter and increasing the gas-flow path-length. Increasing the upper-deck air pressure and improving the wastegate response helps but there are cost increases and reliability disadvantages as well.
So in order to keep the machine moving in a efficient way it's always better to
have it running anywhere above 1600rpm. Rushing up to achieve that will always consume more fuel. Best is too smoothly let it rise and once it reaches it peak torque work around with the gears to keep the needle across that rev band and most likely you see decrease in fuel consumption.

CHeers!

[netchef]

Originally Posted by Invinsible

NETCHEF:

Incase of Fabia 1.4tdi you get 155NM of torque at between 1600-2800rpm which means turbo starts operating at full boost once crossing 1600 rpm all the way upto 2800rpm

CHeers!

Invinsible: Add away, Sir. A scientist could not have put it better.
Somewhere too the Variable Vane turbos?

[VKJ]

After going through these rpm..km/h posts, I am a bit more confused than others here. What's the relationship between rpm and kmph, is there a formula or something I can use to derive the other when one is known....revolutions......rotations.... somebody please clear the confusion in the air....

I received this sms text from the dealer regarding driving tips, which is inline with what invinsible has mentioned above.
quote To get d optimum fuel efficiency drive d vehicle with proper gear ratio & maintain engine RPM b/w 2000-2800. unquote

@k_ajay I am not seeing much difference in my case, since these are only diagnostic checks, they will connect the on-board computer to the VAS which I guess will identify if there are any faults or errors, apart from manual intervention for topping the fluid levels, lubricating, washing and cleaning etc.

[k_ajay]

Originally Posted by netchef

k_ajay: Sorry guys/Monsieur Ajay- I'll have to go during the week as their Service Centre is just 200 metres from my office.

No problems, Sir. I understand. And goodness, you do travel far, for work. No surprise then that you opted rightly for a TDI.

Robin and I have planned and also booked slots to get our vehicles checked at TAFE SC this saturday morning at 9am. Somehow that time seemed to work fine for both of us..

Originally Posted by VKJ

@k_ajay I am not seeing much difference in my case, since these are only diagnostic checks, they will connect the on-board computer to the VAS which I guess will identify if there are any faults or errors, apart from manual intervention for topping the fluid levels, lubricating, washing and cleaning etc.

Oh ok.. I hope that the time spent at the SC is worthwhile and the a/c performs better for the summer [boy, bangy is gettin 'hot in herre'].

@ all: I think people mistook or misread my posts on my continued attempts to drive in speed bands that optimises fuel consumption and aids fuel efficiency.

I did say that I drive at speeds 45-55kmph but not on the 5th gear; i did them at 4th gear. But now, I'm also trying out what Robin has stated here, for a short while. Sometimes, I shift to 5th gear and go upto 60-70kmph, keeping the rpms under 2k.

Let's see if it does wonders, in reality. Stirred up a hornets nest in this thread, eh??

[netchef]

Originally Posted by VKJ

After going through these rpm..km/h posts, I am a bit more confused than others here. What's the relationship between rpm and kmph, is there a formula or something ......rotations.... somebody please clear the confusion in the air....

VKJ: I'm afraid my knowledge goes thus far and no further, Sir. Best I can do is point you at our capable and articulate and prolific Professori Fabiosi whose scientific abilities you can happily rely on.

Happy Miles.

Originally Posted by k_ajay

No problems, Sir. I understand. And goodness, you do travel far, for work. No surprise then that you opted rightly for a TDI.

Robin and I have planned and also booked slots to get our vehicles checked at TAFE SC this saturday morning at 9am.
Let's see if it does wonders, in reality. Stirred up a hornets nest in this thread, eh??

k_ajay: Great, Sir. You and Robin have a Cool Day Out (with Baby). I've yet to speak with Skoda to make an appointment for myself as it's been rather hectic and all-over-the-place at work. Irony will be if I land up when you folks are there- but we could make a day of it, eh?

Stirred up a hornet's nest all right! But a good, honest hornet.

[shykrish]

Thank you all guys who have helped clear the air regarding rpm/kmph/fuel efficiency, especially Invinsible sir your technical knowledge is awesome, thanks again.

Took my car to the camp yesterday, the only good thing done was that the AC filter was cleaned that has made a difference to cooling, its almost like new now. The other 40 points is more of a joke, if you take a look at the job card you'll know(like, checking right indicator next comes checking left indicator etc etc).