BoostedWS7

how much boost can i go on a forged 9.4 to 1 on 93 octane? how much timing too?
its about 13 lbs boost and 14 degrees timing now.

bigturboz28

Is it intercooled?

Add Methanol injection, this is a very inexpensive and effective insurance / power adder, especially if you do not have an intercooler (which i would recommend!) - Just make sure it is topped up, which is pretty easy once you get the feel for how fast it is being used.

You will find bigger gains by adding boost and retarding the ignition (to a limit of course).

It is very hard to say, perhaps your setup heats the incoming air more/less than another??? The best way to know for sure is do a tune with the targeted gas until you see a little knock then back it off (you might have to play raising boost lowering advance to optimize) enough to account for very hot days / shitty gas.

lmt0705

iTrader: (7)

im running 16-17 psi on my motor with meth injection and the stock 4.5 inch twin intercoolers with 9.5 comp. no problems or complaints other than being able to smoke crotch rockets on the street

EPP

iTrader: (22)

We generally can go 12 to 14 psi on the 4.5" intercoolers and 16 to 18 degrees of timing. Add either meth or a front mount intercooler, and you'll be able to run more boost. Bob

TNTramair

iTrader: (15)

He has a Front mount.

BoostedWS7

yup, thanks, i have a big front mount thinkin bout more boost and meth inj.

EPP

iTrader: (22)

Meth injection makes a big difference, as you can add a lot more timing without getting into detonation. Bob

2fast02TA

anyone know how much boost can be put on stock LQ4 with good rod bolts, head stud cometic gaskets and plasma moly rings 10 to 15 on race gas or not 72mm rear mount turbo