need help ls2 seems too rich on cold start

[NewJack]

Hey guys

I installed a cam in my 06 gto. Its a 226/226 112. When I start the car when its cold it seems very rich. There is a smell of fuel until the car warms up and it goes away. I am also getting a black soot like build up on the back of my car near the exhaust. The car has long tube headers and hi flow cats. The car starts and runs and drives fine hot or cold. Any tips on what should be done to minmize the the rich condition on the cold start? Also since I have tuned the car on the dyno I noticed that I get some poping on decel. Any tips to fix that would be great too.

Thanks

[MMGT1]

Made any adjustments to DFCO yet? Enabled/ Dissabled??(Asking about your popping on decl)

[NewJack]

no adjustments have been made to the DFCO yet

[MMGT1]

I am looking for a link for you....

[MMGT1]

This might put you in the right direction

http://www.hptuners.com/forum/showth...ght=rich+start

And I would dissable your DFCO for tuning purposes, IMO. Re-enable them and tune that after. I would get the trims in line first,.....anyone else?

[NewJack]

thanks ill check it out

[EC_Tune]

Probably the IVT Gain table is a bit too high. Try knocking it down 5-10%