1JZ300

iTrader: (6)

hello forums its me again, i recently just purchased a punch of **** for my car, and i bought a Precision SC61 turbo. now heres a list of supporting mods. i have a Walbro 255lph fuel pump, 550cc injectors, Aeromotive FPR, New water pump, upgraded intercooler piping 3", full 3" exhaust with down pipe, 38mm W/g, with dump tube, a greddy SCC and BCC, Apexi SAFC, and a greddy profec b EBC, with a HKS BOV, now the motor itself is stock, i heard it was bullet proof so i figured i could get away with it...so heres my ? ill get to the point, HOW MUCH BOOST IS TOO MUCH FOR THIS MOTOR WITH THESE MODS??? let me know, your the pros here not me!!! what you think??

wildrice09

There's no such thing as too much boost

nasc300

The walbro is good for 500ish WHP. So turn up the boost untill you hit the low 5's

kietlander

well u can boost as much as ur running the correct A/F ratio. if u run lean bad things happen. u will go BOOM. i think with ur setup u might be good at 500whp. but get it dyno tuned when all is done. since u have the safc and the greddy ebc, u can have different tune points for different amounts of boost. my guess is around 20psi?? i could be wrong.. lol...

O. L. T.

iTrader: (17)

you missed the engine forum, I fixed it.

5spdSC300

iTrader: (1)

Your going to be limited by your fuel setup. As stated above, the walbro is good to around 500 and so are you injectors. Also don't forget to take octane into consideration. Is your question geared towards pump gas or race gas? There are many factors into how much boost you can run.

1JZ300

iTrader: (6)

i got a decent fuel setup, i heard about the stand alones and i am thinking about it. i do need a new fuel rail, my goal is about 450-500rwhp, so i think this could do it at a god amount of boost, and i totally agree with you there is NO SUCH THING AS TOO MUCH BOOST, but at a good amount i think i can push it what do you guys think, is this setup good for 500?

5spdSC300

iTrader: (1)

Your setup looks to be good for 500 but not on pump gas with that turbo. I usually don't run more than 14-16psi on 91 but i've heard of people running 17-18. At those boost levels and that turbo, you won't hit 500. It might be possible with race gas and more boost.

1JZ300

iTrader: (6)

so you have experience with this turbo?? so on 93 (which i always use anyways), i could run about 16 lbs, and on race (we all use 117 down here) about 20? or so? my goal is between 450-500, my everyday driver and thanks for the input