Hey all....i got a 5.3 avalanche currently running a comp 212/216 .520/.524 115*....wanna get it tuned and i needed some suggestions on injector sizing and if the LSX manifold will fit the 07 motor, also, should i go 78mm or 90mm...ANNND DENNNNNN....wanna know if HP tuners tuning can edit out the 'stabili-trac' crap...my 4:88's dont like it for some reason....


thanks in advance for the help and suggestions....


mike

 

The injectors are probably ok.Check the duty cycle with HPT

 

you should have the 90mm truck intake already.

 

you can "tune out" the engine side of stabilitrac. like the timming retard and throttle body closeing if traction is lost. you cannot however tune out the brakes being applied when traction is lost. the tire that spins gets the brakes applied to it to stop it from spinning. it may help alot if you tune for the new gears. kinda like changing the tire size. if you didn't tune for this then it may not understand whats going on and causing stabilitrac to engage. hitting the off button works good too.

 

I hate that too I always gotta remember to turn it off wish there was a way to disconnect it...

 

90 mm? I hear it wont fit right, it sits lower so it gets obstructed by the tbody and other stuff...i heard speartech makes a brackt kit but i dotn think he's gonna wana get that involved with it

 

If you have a NNBS 07 then it is an LS2 based engine, and I believe they actually come with 87MM throttle bodies, haven't been able to confirm that the 07+ 4.8 and 5.3's have 87MM or 90MM TB.