how much psi can i run on a stock 6.0 and still be safe? just got the 255 fuel pump and the 42lbs injectors, thanks for all the info from turboberserker and others as well!!

 

If your refering to boost from FI ,I would say 10psi is about all I would run...Some will say more though...on my truck with a 2.75 pulley on a Maggie I only see 7lbs of boost...thats enough for me

 

with or without meth

 

sts t67 with meth!

 

Meth alone? Meth + FMIC? FMIC only?

Since you're in an 05 crew, I'm assuming its an LQ4 (so 9.4:1 CR rather than the 10.1:1 in an LQ9).

With none of the above, about 7 psi is all I would run.

With meth and a FMIC you might get away with 14-15psi. With only meth or only the FMIC, I'd stick at 12 psi.

All of this assumes a very solid tune (aka in person street / dyno) by an FI savvy tuner.

--just saw the post about meth

Is it a progressive meth controller? (Alky control or snow performance)?

 

i know this is stupid but what is a FMIC? it is a LQ9 the glove box says!! its a snow performance! thanks for the fast replys.

one more thing i have a boost,and a fuel psi gauge, and one more hole-to fill, air/fuel or pyro, wide band air/fuel are to damn much $$$!!!!!!!

 

Wide band is the only gauge worth putting in of the 3 you mentioned. FMIC= Front Mount Inter Coooler

 

FMIC = front-mounted intercooler

you must have a vortec max then if you have a factory lq9....

i would get a wideband but if nothing else get a pyrometer or a interceptor scan gauge

edit: trever1t: just barely....

 

i have a 5000lbs boat, it would be a bad idea to try to pull it right?

i was told the wide band was around $350 is this the case?

 

A kill is a kill

05crew, if you have a good trans, trans cooler and tuned properly I don't see why you couldn't tow your boat. Check summit for an AEM wideband unit, I think I paid just over $200 iirc.