Wow does my car burn rich (I think maybe too rich) at the high RPM's, you can actually smell it...and when you rev it from a standstill you can see a faint blackish smoke from the tailpipes (carbon isn't building up to bad on the exhaust)...I know they burn rich....but I think its burning too rich now...I reset the ECU...I doubt this will help, any ideas....I am going to have it tuned and ECU tweaked in teh near future, I was just wonderin if anyone else has seen this or if theres another can of worms I'm opening up.

 

I think their was multiple posts on this last week

 

Yeah I found one thread...I guess its normal I'vew been running 94 SUnoco almost exclusively...I'm guessing redoing the fuel mapping will fix that and give my engine the much needed air at the high end

 

Sunoco is still in bus. WOW! & we only get 91 octain in CAL.
mybe 93 is to high for the U.S. computers try going to 92for a while.

 

Sunoco only offers 89 91 93 and 94 in PA and NJ...its on the way to work and covienient (plus the cashier is HOT) so...