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11-17-2009, 08:31 PM
#21
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Question for STaSIS:
Why don't Audi engineers (who are arguably as capable as anyone doing such mods) tune the ECU this way from the factory? It certainly would make their cars more competitive, no? Or is it that such modifications have some eventual downside risk in terms of engine/transmission reliability and longevity? Perhaps some other reason? Care to explain to an inquiring mind?
Why don't Audi engineers (who are arguably as capable as anyone doing such mods) tune the ECU this way from the factory? It certainly would make their cars more competitive, no? Or is it that such modifications have some eventual downside risk in terms of engine/transmission reliability and longevity? Perhaps some other reason? Care to explain to an inquiring mind?
You probably already answered the question as far as reliability, but also overall cost for all involved. With a more powerful motor, you will probably need a better transmission, drivetrain, brakes etc. All things that would drive up cost on a vehicle. Also, trying to sell a car with more power raises the price for the consumer as well for things like gas and insurance etc.
But it would be nice to have a car "pre-tuned" to its full potential right from the dealer lot!
11-18-2009, 04:43 AM
#22
AudiWorld Senior Member
Audi has to tune their cars for the wide variety of gas that typical consumers might put in the car, including non-premium fuel and lower-quality gas in many markets.
ECU tuning from folks such as Stasis and APR requires the use of a specified minimum octane of fuel. Using lower octane fuel can damage the engine. Folks who "chip" their cars accept this requirement and the risks associated with it. The average car buyer does not, and Audi has to accommodate them and "de-tune" the ECU accordingly.
Also, as mentioned, tuning the ECU will push other engine components closer to their engineering tolerances and lessen the margin of error to a point beyond Audi's design target.
ECU tuning from folks such as Stasis and APR requires the use of a specified minimum octane of fuel. Using lower octane fuel can damage the engine. Folks who "chip" their cars accept this requirement and the risks associated with it. The average car buyer does not, and Audi has to accommodate them and "de-tune" the ECU accordingly.
Also, as mentioned, tuning the ECU will push other engine components closer to their engineering tolerances and lessen the margin of error to a point beyond Audi's design target.
Last edited by Hobbes; 11-18-2009 at 04:46 AM.
11-18-2009, 09:33 AM
#23
AudiWorld Super User
Audi has to tune their cars for the wide variety of gas that typical consumers might put in the car, including non-premium fuel and lower-quality gas in many markets.
ECU tuning from folks such as Stasis and APR requires the use of a specified minimum octane of fuel. Using lower octane fuel can damage the engine. Folks who "chip" their cars accept this requirement and the risks associated with it. The average car buyer does not, and Audi has to accommodate them and "de-tune" the ECU accordingly.
Also, as mentioned, tuning the ECU will push other engine components closer to their engineering tolerances and lessen the margin of error to a point beyond Audi's design target.
ECU tuning from folks such as Stasis and APR requires the use of a specified minimum octane of fuel. Using lower octane fuel can damage the engine. Folks who "chip" their cars accept this requirement and the risks associated with it. The average car buyer does not, and Audi has to accommodate them and "de-tune" the ECU accordingly.
Also, as mentioned, tuning the ECU will push other engine components closer to their engineering tolerances and lessen the margin of error to a point beyond Audi's design target.
11-19-2009, 10:51 AM
#25
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Last edited by jeff@stasis; 02-01-2011 at 07:45 AM.
11-19-2009, 10:14 PM
#26
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Something to remember as well is that the TT-S has 265 HP stock on the same motor. The detune is more of a marketing thing than anything else.
Don't want it to get too close to the S4.
Don't want it to get too close to the S4.
11-19-2009, 10:30 PM
#27
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The TT-S motor is also a 2.0T, but there are many things about it that are different than the 2.0T in the A4. Larger turbo, better injectors etc.....
