i have a stock turbo,i got a holley 255 fuel pump,but i wanna know how much can i turn up the boost without realy putting anything in real danger?its a 99 gs-t,right now im on 10lbs,i dont realy wanna turn it up anymore,without some advice.

 

is the fuel pump your only mod? because if it is, its a waste, the T-2Small is ok to 15psi, but still sucks.........uhm thats bout it, get a air filter, an exhaust, and a bigger turbo..........

 

Youre just gonna end up running exceedingly rich with that set up.

 

Yep, why did you put the fuel pump in now anyway? There are tons of other things you should have done first.

 

putting in a bigger fuel pump isnt gonna make you run rich. The fuel pump just allows you to pump more fuel when necessary. The only thing that may happen with having a bigger fuel pump isgetting issues with the fuel curvebut without upgradedinjectors the computer should be able to handle it.But with that setup id say just go with 15psi and youd be all set. And you do have a boost guage right? Sorry to ask but too often we get people just going by the dumb stock gauge

 

thanks engineer, lots of misinformation here. I think he made a good choice in getting the fuel pump at this point.I ran 16-17psi on my stock turbo but it doesnt really matter because by redline its going to fall to 12ish psi no matter what. the exhaust side of the turbo is jus too small an cant keep up.

 

yes i have a boost gauge,

 

okay let me get this right i went out got a boost guage , mbc,bov to replace the stock piece of crap and im still only going to be squeezing out 12lbs oh this dsm thing is kinda pissing me off, not kicking it on dsm just wishing i had a better guide line to go on

on the other hand and on topic ive been told over nd over that 15 is safe at 16 you might experiance creep , at 17 you will start to get fuel cut but hell i still haven,t got past my ****ty stock bypass valve to find out but i did get a bov today but i haven't got it on yet i'll let you know when i do

 

no you will be runningwhatever your boost controller is set to up to 5.5-6k rpm, but by redline the boost is going to fall off, the exhaust side of the turbo is jus too small and cant keep up with all that airflow. t25 is a good midrange turbo, shift at 6k and itl feel quick, but it just doesnt make any power up high. dsms are great cars to mod though and can take tons of abuse. a 16g is a cheap upgrade, very streetable and can make enough power for most people

 

thx man i was starting to get discouraged