Ok, i installed my stg 1 ecu a couple weeks ago expecting to hold all my boost. i also have an agp wgt n i closed the bolts all the way. I turned the mbc all the way down, now im boosting 20 psi holding between 15-17 on a hot day n holding 16-18 on a regular night. My question is what do i need to boost 20 n hold 20 psi?

 

ALOT more than what you have. Spiking 20 on a stock fuel system is bad for your AFRs, thats seriously lean.

Holding 20psi is very difficult on the stock turbo. You'd have to spike over 20 to hold it.

 

you should only spike 17-18 on a stock turbo anyways, i was told its to much for the the system and you will throw a overboost code....but maybe with stage 1 its different, im not to sure.

Jordan

 

the stage 1 ecu is allows ur car to run more fuel and also since i installed it i had no check ingine light so thats a plus.