99ccz28

iTrader: (6)

i bought a sts turbo kit with a t-67 turbo and was just wondering how much boost i could safely run. i have an a4 that shifts around 5500 if that matters.

can you run 6 or 7 #s without the injection kit?

can i use my stock injectors and just upgrade the fuel pump...or can i just use stock injecs and pump if i only run 5 #s?

any input and suggestions would be great. thank you

JohnnyZ28

I believe 4-5psi if its not intercooled. Maybe 5-6psi if it is intercooled. If the car is stock you should have done the supporting bolt-ons before buying that remote setup. I'd recommend doing some sort of fuel setup; injectors, fuel pump, etc.

socalstreetracer

iTrader: (4)

I would seriously recommend injectors and fuel pump and good tuning, I was boosting max about 7-8psi with no ic but after the intercooler ive boosted 12 psi several times and even 14psi rarely.

mahhddgtp

I wouldn't push past 6psi without an intercooler.... You can boost 8-10psi, but that's not even safe. People have boosted 12 pounds, but have eventually fried a piston or snapped a rod.

mdhmi

iTrader: (1)

I've been running 9-11.5 lbs of boost for the last two years on a stock bottom-end. Not an issue at all with good fuel and a good tune. If you're really only going to run 5 or 6 lbs of boost you shouldn't even bother going FI.

Mark

FRCBobby

iTrader: (27)

Just got the Procharger on my 00 FRC and it is showing 9psi on the boost gauge. All is good thus far. Hope I have the luck of mdhmi with teh bottom end.

618HAWK

iTrader: (361)

Been pushing a good 9 psi for well over a year now with no problems..Good tune is a must!
Stock block as well, daily driver.

99ccz28

iTrader: (6)

well i liked the turbo because you can always turn it up...but if you were to go with head/cam thats all you got no turning it up..thats y i went fi..plus i got this kit new with upgraded turbo for 3200 so i thought that was a pretty good deal.

thank you for all replies

99ccz28

iTrader: (6)

what size injectors would i need? thank you

618HAWK

iTrader: (361)

42#,s will work fine, if you are planing on any mods down the road I would go with Motron 60,s . Why change again later, wish I would have went with them.

Will need to upgrade the pump as well.

bigblock4-speed

i am trading my 05 6speed gto for a 01 ss camaro 6-speed with 29k miles that is pulling 6.88 pounds of boost. Rwhp is 538, and has extensive amount of work 12bolt, loops, transmission clutch, etc.. the car has a stock bottom end (pistons and crank) will the car be ok? Does have came, ported heads, roller rockers,tit push rods.. I just want to drive the car as a daily driver, will it be ok set at 6.88 pounds of boost - and will i have to worry about building the stcok bottom end up? Dont want to dump money into it- just want to drive it.. any people knowledgeable about this psc1 and a stock bottom end??

vette#3

iTrader: (1)

I would think 6 lbs of boost on your Stck bottom end would be fine ,its all in the tune & With the correct fuel system of course

tilly

iTrader: (5)

I know a guy running around here back home who is putting 9 PSI with his turbo plus a h/c package from TSP on a stock bottom end in a 04 GTO. But then again he knows how to tune his stuff.

bigblock4-speed

the car also has a fuel system is all aftermarket supports 1200hp. The car is a D1SC procharged with twin intercooled.. the tune is really laid back.. I think it will be ok. So what do you guys think- im givin up my 05stick gto and 4k for his 27k 01ss with 12bolt- procharged, twin intercooled. wilwood brakes, frame tied, 1k harmonic ballancer, spec 4 cluch, basically everything.. budnick racing wheels,hd driveshaft, etc. etc..

MY99TAWS6

iTrader: (3)

Buddy has been running his sts 60 not 67 turbo at 5psi for awhile now. He has 42 pound injectors and stock fuel pump has not installed racetronix pump yet and no boost a pump. I would for sure go to pump and 42s or 60s if you want to go much past 5psi. Also would not go much past 7 or 8 psi unless youi change out for say larger chamber heads like patriot 72cc for example. Drop compression and 10 psi or so should be fine.
I have seen two sets of blown ringlands both on lt1 cars but pretty sure the pistons are same crappy design on ls1 and lt1 cars. Better to not be greedy. Of course it would be nice to have an intercooler or meth /alc injection for extra safety. In my experience intercooler is more effective at higher speeds like highway and alc works at any speed.

Don't get greedy on stock engine unless you can afford a new one. Most times it some errror on boost. The one lt1 was blown with procharger when guy tightened up his belt or something to stop slip and hit a few pounds over what he normally ran. The other lt1 sts car blew from not using the electronic boost controller correctly.

MY99TAWS6

iTrader: (3)

Oh in my last post wanted to clarify. My aps twin kit is not installed currently. Got it too late to install this season so its next year spring now. I am planning on forged motor but if put it on the stock engine very likely would leave it at 7.5 stock gate spring settings.
Again not going to be greedy with stock pistons.