Stopping the fuel trims affecting WOT fueling
Evolved Member
Joined: Mar 2008
Posts: 730
Likes: 3
From: Lattitude 48.38°, Longitude 17.58°, Altitude 146m = Slovakia, for common dude
No matter what your high oct or low oct fuel maps say, your ECU will always try to achieve 14.7 while in closed loop. You cannot adjust your AFR in closed loop unless you put some sort of resistor in between the O2 sensor and the ECU, making the ECU think it's at 14.7 when it actually isn't. The only other way to adjust your AFR at idle is to go full open loop by zeroing out your open loop maps like mentioned above.
on the MR i did (0 fuel trims)
the car knocked wildly above 6500 (11.6 afr) with this mod and made like 264 whp (had to reduce timing a lot and it still knocked)
i turned it back to stock and kept the same afr and was able to increase the power to 290 no knock
Just an fyi
the car knocked wildly above 6500 (11.6 afr) with this mod and made like 264 whp (had to reduce timing a lot and it still knocked)
i turned it back to stock and kept the same afr and was able to increase the power to 290 no knock
Just an fyi
on the MR i did (0 fuel trims)
the car knocked wildly above 6500 (11.6 afr) with this mod and made like 264 whp (had to reduce timing a lot and it still knocked)
i turned it back to stock and kept the same afr and was able to increase the power to 290 no knock
Just an fyi
the car knocked wildly above 6500 (11.6 afr) with this mod and made like 264 whp (had to reduce timing a lot and it still knocked)
i turned it back to stock and kept the same afr and was able to increase the power to 290 no knock
Just an fyi
on the MR i did (0 fuel trims)
the car knocked wildly above 6500 (11.6 afr) with this mod and made like 264 whp (had to reduce timing a lot and it still knocked)
i turned it back to stock and kept the same afr and was able to increase the power to 290 no knock
Just an fyi
the car knocked wildly above 6500 (11.6 afr) with this mod and made like 264 whp (had to reduce timing a lot and it still knocked)
i turned it back to stock and kept the same afr and was able to increase the power to 290 no knock
Just an fyi
Like Tephra said comparing logs & Roms would be a good start to figure out why that may be happening.