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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Thu, May-31-2018, 05:33:42 PM   #21
m3arod
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Default Re: E36 M3 Fuel Trims stuck at -8.1

Now that I'm really looking at the injectors they're the pink ones and it hit me! Aren't the pink injectors the 24lb injectors? If thats the case my dme is leaning out the mixture to compensate for the extra fuel going into the engine. PLEASE CORRECT ME IF I'M WRONG
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Old Thu, May-31-2018, 05:37:20 PM   #22
Braymond141
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Default Re: E36 M3 Fuel Trims stuck at -8.1

You are wrong. Pink are 21.5# and stock for all 328 and M3.
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Old Fri, Jun-01-2018, 08:05:51 PM   #23
m3arod
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Default Re: E36 M3 Fuel Trims stuck at -8.1

Today I replaced my month old mass air flow with a VDO MAF and the fuel trims went to 0. I cleared the P1188 and p1189 and lets see if they stay off!
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Old Fri, Jun-01-2018, 08:11:05 PM   #24
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Default Re: E36 M3 Fuel Trims stuck at -8.1

If you were using an aftermarket HFM, that may have been the problem. Aftermarket HFM and cam position sensors often cause issues.
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Old Fri, Jun-01-2018, 08:31:58 PM   #25
Braymond141
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Default Re: E36 M3 Fuel Trims stuck at -8.1

Quote:
Originally Posted by pbonsalb View Post
If you were using an aftermarket HFM, that may have been the problem. Aftermarket HFM and cam position sensors always cause issues.
Ftfy.
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Discussing E36 M3 Fuel Trims stuck at -8.1 in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)