417 Motorsports

iTrader: (2)

what kind of tuning is required for 5 lbs of boost on a turbo setup?
i need to know this so when this thing runs in the next few weeks, will i be safe to drive it around town and work any bugs out of it. Would HPTuner be suficent to tune off of? I plan on going up on boost eventually, And i will get some pics up asap


heres the setup

00 s-10 blazer
03 LQ4 (came out of an HD chevy)
98 ls1 intake manifold and injection
98 painless wiring harness
98 ls1 ecu
SP73 GTQ turbocharger
custom stainless turbo manifolds
3.5" stainless downpipe and exhaust
tial 38mm wastegate
walbro 345lph pupm
45lb hr injectors
hks blow off valve
custom vertical core 24x4x6 intercooler
3" intercooler piping

cablebandit

iTrader: (37)

YOu might be ok on a stock tune (timing) with 5psi but I doubt it. You are gonna have to tune for the injectors for SURE. Get that done and you can drive around at least. HPtuner should do it all for ya.

417 Motorsports

iTrader: (2)

ok will stock injectors work for now or is that a big NO NO? and when you say timing are you talkin it will be to far advanced? At first on the 5 lbs I plan in just driving it normal and gettin the lil bugs worked out of it. I have the innovative motorsports wideband so i can keep an eye on the A/F

Blake

cablebandit

iTrader: (37)

yes timing may be a tick too advanced. If you are just going to drive it and not WOT it for a bit, stock tune/injectors will work...you won't even know the turbo is there.

White_Hawk

iTrader: (3)

You are definitely going to be out of a stock injector pretty early. I had 36 lb injectors with my 6 psi powerdyne setup (non-intercooled) and I hit 100% duty cylce at about 5800 rpms. I had a walbro pump in tank, too.

As far as software, I would definitely give HPTuner a try. I have LS1-Edit because it was the only thing out when I bought it. Don't go cheap on tuning or fuel system, it will just cost you more in the long run.

-Geoff

417 Motorsports

iTrader: (2)

thanks guys, I am getting pretty excited on this lil project and want to be as cautious as i can when it comes time to get it runnin. What is the website for HPTuner, i have tried to find it and no luck.

Pro Stock John

iTrader: (34)

Click on the button on the right--->

www.hptuners.com

I am uncomfortable when folks try to drive on a stock tune.

In short, we won't reccomend it because if you get on it once you might pop a head gasket. Remember even part throttle timing might be too aggressive if your fuel system is not adequate.

I'd get the tuning 'ware and then start to tweak it and drive it, unless someone on here has personal experience.

byarddog

is HP tunners pretty easy to figure out, or do you need to know a lot about timming air and gas and all that. Should i just stay with a scan tool thanks.

417 Motorsports

iTrader: (2)

from what i can tell the hp tuner stuff is fairly complex and looks as if it should be able to control everything that i need, am i right?

Pro Stock John

iTrader: (34)

It is pretty straightforward and comprehensive.

I'd just prefer that you scale the timing back and keep 'er on the safe side.

It only take one instance of jumping on the gas and going 17:1 for a while to hurt a headgasket or a piston.

417 Motorsports

iTrader: (2)

ya i am a lil scared of it goin lean, or detonating. I am totaly new to the tuning aspect of it but not the fabrication, ive got plenty of time to learn hell im only 21

Blake