Can someone give me symptons of a car running too rich????
Back firing when accelerating, slow to rev when the engine is warmed up, pulls like **** below 4000 rpm but has 'some' power beyond 4000 rpm, idles normally but sometimes roughly. I smell little gas from my exhaust and I nearly pass out when I do.
Does this sound right??

 

Sounds perfectly right, if the car makes good compression (which I would imagine it does). Have you talked to Steve about tracking down the problem?

 

Doh!! You found me!!
Thursday!!

 

Those are all symptoms of the car running rich...tune that beast and get some of that lost hp back!

 

If I undrstand correctly you cannot tune out the richness with the stock ECU. You would need a fuel mgnt comp. Correct?

Say I'm running this rich with a new engine and my mods are stock intake with the poor mans' mod...pun intended, and a downpipe. Should I replace my cat to see it that would lean it out some or should I just bite the bullet and go for the ECU upgrade so I can tune it. I don't plan on going any further with the mods at this time.

Later...Scott