Could lower compression as in 8:6 idle bad because there isnt enough or there is too much fuel. Wouldnt the computer think its still at 9:5 compression and give it the wrong amount of fuel?
#27005, "RE: Compression and Fuel" In response to Reply # 1
As long as you still use the stock ECU, it will read the O2 sensor to determine how much fuel to add at idle. I don't think 1 pt in compression is going to make a significant impact on idle quality. Your fuel demands should be a little different with the lower compression...but the ECU can adjust...just like it does with every other small alteration you make.
Corbin
'95 ESI-T HRC+FMIC+ETC...
Gimme fuel...Gimme fire...Gimme that which I desire
#27006, "RE: Compression and Fuel" In response to Reply # 2
Maybe I have bad O2 sensors? Who knows but this shit is frustrating. My mechanis swears he set the timing correctly. I havent had time to check through the peek hole by the tire yet. I really wish I could get rid of my rough idle.
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