[Santeeford]

Car ran good and clean at 2500 rpm but failed at idle with high hydrocarbons. Has new plugs,t-stat,ect sensor. Tps is properly adjusted. The car has an explorer intake manifold and 70mm throttle body and headers. ANy thoughts?

 

[Me_and_my_STANG]

Ive heard ppl say they put all sorts of stuff in the fuel to pass like rubbing alcohol and and heat and just a bunch of different things. You might look into it.