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Originally Posted by sagpatel
(Post 4284782)
Can you share details of the pete's dealer in mumbai who remaped your car. As far as I know you have to ship the ECU to them for remap. But a dealer in mumbai would be nice. |
Originally Posted by Tanveer_2558
(Post 4284792)
Even the dealer here in Mumbai mostly won't be able to tune your car here itself, He will have to ship the ECU to kochi get it done, Happened with me as well as my friends jetta when he had got it remapped, Which means you will have to arrange another means of transportation for a week atleast, He is located at Peddar road at the famous classic cars petrol pump, Make sure he doesn't charge you for removing and refitting the ECU. If the stock is 110 bhp, You can expect a power jump till 140- 150 bhp, It will surely make the car very peppy. |
Originally Posted by sagpatel
(Post 4284806)
Shipping the ECU is a risk i feel, I will give them a visit once i get time and see what they have to say. Is the dealer's name "performance unlimited", if yes then I had a chat earlier and he said we need to ship the ECU to kochi and we are looking at a week's time. He said power bump to 25hp and 50NM torque increase. |
Originally Posted by SPIKE ARRESTOR
(Post 4291196)
Though many people talk about maps etc. what many people (including so called tuners) don't know is "Variant coding". Because manufacturers mostly use the same powertrain in different combinations, most often they have for this either a parameter or a characteristic line. This means, just by changing this one parameter, you could get different outputs at the wheel. |
Originally Posted by SPIKE ARRESTOR
(Post 4291196)
Though many people talk about maps etc. what many people (including so called tuners) don't know is "Variant coding". Because manufacturers mostly use the same powertrain in different combinations, most often they have for this either a parameter or a characteristic line. This means, just by changing this one parameter, you could get different outputs at the wheel. For example, the manufacturer I work for, just by changing the variant coding of 1 parameter, I can get following outputs. Option 1 : Parameter = 0 --> 200kW Option 2 : Parameter = 1 --> 245kW Option 3 : Parameter = 2 --> 270kW Option 4 : Parameter = 3 --> 320kW No maps, no "optimization", no free flow, no headers, no tuning, nothing. But one needs to know what that parameter is.;) Spike:D |
Originally Posted by SPIKE ARRESTOR
(Post 4291196)
For example, the manufacturer I work for, just by changing the variant coding of 1 parameter, I can get following outputs. Option 1 : Parameter = 0 --> 200kW Option 2 : Parameter = 1 --> 245kW Option 3 : Parameter = 2 --> 270kW Option 4 : Parameter = 3 --> 320kW |
Originally Posted by SPIKE ARRESTOR
(Post 4291196)
Option 1 : Parameter = 0 --> 200kW Option 2 : Parameter = 1 --> 245kW Option 3 : Parameter = 2 --> 270kW Option 4 : Parameter = 3 --> 320kW |
Originally Posted by Jeroen
(Post 4291776)
One parameter changes the output by that much? That’s quite remarkable! |
could you share some more details on this. What model, what parameter etc? Thanks. Jeroen |
Originally Posted by Dr.Naren
(Post 4291806)
It should be very easy for the manufacturer to do it. It might be just variant coding or single parameter change for the manufacturer. But that single change should be affecting couple of maps. I have seen same maps getting repeated several times in ECU. But the values won't be the same. |
Originally Posted by SPIKE ARRESTOR
(Post 4291196)
... Just by changing this one parameter, you could get different outputs at the wheel. ... |
Originally Posted by Jeroen
(Post 4291776)
... To be honest, I find it very hard to believe that engines and powertrains would be over dimensioned by this much. ... |
Originally Posted by SPIKE ARRESTOR
(Post 4291822)
... Sorry, those details I cannot share on the forum ... |
just by changing the variant coding of 1 parameter |
Originally Posted by SPIKE ARRESTOR
(Post 4291822)
Yes, see reply from Dr.Naren, he has answered it pretty much. |
It should be very easy for the manufacturer to do it. It might be just variant coding or single parameter change for the manufacturer. But that single change should be affecting couple of maps. |
Originally Posted by SPIKE ARRESTOR
(Post 4291822)
Sorry, those details I cannot share on the forum, the next time you are around Stuttgart, on a weekday, I could show you a live demo. |
Originally Posted by Turbanator
(Post 4291826)
Perhaps a lame question, why doesn't someone simply replace that variant coding say at a dealership or how hard will it be for someone to replace ECU from a higher output engine variant to a lower? I believe it will still be cheaper than then cost difference manufacturers charge for higher output models. And are you absolutely sure there is no change in Internals like pistons or crank? I remember discussions somewhere, 320i and 328i have very different internal components. |
Originally Posted by Akshay1234
(Post 4291939)
I too find it hard to believe that such a huge change can happen from just variant coding, without any internal changes. I know that the 328i and the 320i engines are the same, except for the pistons due to which the compression ratio is also different. Even for BMWs which use the basic N57 engine in the 258, 313 and 380bhp tunes there are a single, twin and tri turbos respectively. |
Originally Posted by SPIKE ARRESTOR
(Post 4291196)
Though many people talk about maps etc. what many people (including so called tuners) don't know is "Variant coding". Because manufacturers mostly use the same powertrain in different combinations, most often they have for this either a parameter or a characteristic line. This means, just by changing this one parameter, you could get different outputs at the wheel. For example, the manufacturer I work for, just by changing the variant coding of 1 parameter, I can get following outputs. Option 1 : Parameter = 0 --> 200kW Option 2 : Parameter = 1 --> 245kW Option 3 : Parameter = 2 --> 270kW Option 4 : Parameter = 3 --> 320kW No maps, no "optimization", no free flow, no headers, no tuning, nothing. But one needs to know what that parameter is.;) Spike:D |
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