lriver0001

hey hmt, im gonna be boostin my gsr in my hatch soon and im wondering how many lbs of boost and other misc. stuff i need to make 300whp.. i have a ebay t3t4 50 trim turbo and im pretty much peicing a kit together.. CAn i make my goal with a hidden side mount turbo and how many lbs of boost do you guys think it will take? Take note this is on stock internals.. thanks and please positive feedback only

lostmind10

id say that with supporting mods such as fuel pump and injectors 9 would be pushing it and 10 would be dangerous. just run 8lbs that should be enough for a b18c1 and put you close to 300whp.

m0uaman

^ agreed...dont bother pushing over 8psi unless you plan to do a rebuild...you see close to 230-240 with that 50trim...my old setup with a dsm 16g on 6psi only made 197hp with a stock pump and dsm 450cc injectors...

Velisma

8psi is conservative w/ a 50trim. Not sure about a GSR but my B16 was pushing 10psi on a T3/T4OE 57trim w/ .63A/R and did just fine as a DD. TUNE TUNE TUNE!!! Your tune is THE most important thing you can "buy" for your set-up.

lostmind10

did you run that 16g on a gsr? if so how did it do past 7k? i have been looking for a turbo thats not a t3/t4

da9turbs

i ran 18psi on a stock b18a ls block not built with 250,000kms on it ran well for a year until the head gasket went, im running a gt2871r turbo with a small exhaust housing and a ebay cast manifold.

m0uaman

yes the 16g was on a completely stock gsr motor

the peak horsepower was 197@7000rpm after 7k it drops off...torque was 163lbs @ 5.5k

lostmind10

when did the 16g start building boost? im building a kit right now. i bought a big16g from ebay and ported the wastegate flapper opening to eliminate boost creep well see how long it last on 8-9psi

m0uaman

at the time i had a cast iron manifold so it did take a little longer to hit full boost...i remember it being around 3500-3750 for full boost

lostmind10

was it a actual 16g or an ebay brand?