I dont have a SAFC or standalone or anything. I'm running 8 PSI (autometer boost gauge) with an FCD and 720 secondaries. Is that bad or am I better of running stock 550cc.

What damage can running too rich do to my car except hurt my wallet with gas cost?

 

well, the stock ECU doesn't know the injectors are bigger. you could run really rich most the time, however I don't have personal experience or much research time invested in this, and I would like to know some details, too, as I will be installing a FCD soon, hopefully porting my wg, and running straight exhaust.

 

i ran 4 720 secondary injectors for about 4 months and it does run rich, gets a lil worse gasmilage, and mine started harder when hot, but i think w/ 720 secondarys it will just be worse gasmilage if you have your foot above 3800rpm.

 

So its just gas mileage then...?

Cool.

No increase in carbon build up or anything? I run premix.

 

i dont know about premix, sorry

 

dont fucken do it. JESUS.

 

too much fuel means the car runs cooler, right? That's all I came up with LOL. I don't know what problems this causes but other than the $$ lost to crappy MPG i don't see what could go wrong.