pylant123

i'm new to the lsx based engines and wondering what is the largest turbo someone has ran with the stock type fuel injection and how much horsepower they made
thanks

Urban Legend

iTrader: (5)

What do you mean? Injectors, rails, fuel lines, fuel pump?

pylant123

no i've got plenty of fuel system i guess what i meant is the stock computer

ls1290

iTrader: (20)

There are a couple of stock PCMs that make a 1000 rwhp. Personally anything over 850ish, I would switch over to an aftermarket setup like BS3 or DFI.

sevanseriesta

iTrader: (34)

Any particular reason why there is a limit there

ls1290

iTrader: (20)

Around the 800 to 850 range, tuning the car just becomes a lot easier using an aftermarket setup than the stock PCM.

black98ws6ta

iTrader: (77)

When my car was running, we could not get injectors bigger then 96's to work right with a injector driveer box and the stock pcm. I made 920 rwhp on a stock pcm through a th400 on slicks. There are many benefits for a standalone at that power level and even more the higher you go.

y2khawk

iTrader: (5)

it just takes more know how at that level. 160's on a stock PCM and idled in closed loop when my crap was running years ago.

there is something to be said for instant changes on an aftermarket system, but now that's even possible on the stock stuff and a roadrunner.