Whippled2dr

iTrader: (4)

Both efilive and hptuners support the 01-02 vans w/ the L31.

mred

iTrader: (5)

sweet that really helps me out. i have a friend who is a tuner for the above tuning programes
thanks
Ed
ps i have no clue what is needed but i do have friends in low places to locate what need!!!
Whippled2dr?
so did you do the intake swap?

oange ss

iTrader: (50)

PCM swap in his 99 will be pin for pin job, unlike the 96-97 which will need some "extra" time..

mred

iTrader: (5)

meaning -1 +4 for the 97? if i use the 99 cpu

VortecBlazer

iTrader: (2)

what extra time does the 96-97 need?

oange ss

iTrader: (50)

just adding a few wires

VortecBlazer

iTrader: (2)

what wires does the box need? any thing other than the evap wires and the trans wires? i keep seeing things about low reference grounds, but lextechs wiring file doesn't say anything about them

RStahoe99

i am curious to learn how to tune my 99 tahoe by myself...I have taken my truck to be dynotuned, but prefer to "Do it myself" instead of trusting poeple. What equipment will i need to tune the truck properly? I was also thinking of the 411 swap and understand that HOG said you have to have some sort of file from a 01-02 van to start with, can you just get the pcm out of a used van and use that for a swap? If not where do you get the van file?

Randall

StrokerAce03

iTrader: (7)

In your case you can just get HP Tuners and be done with it since they support 98-00 GM V8 trucks without having to swap PCM's.

howard quick

Hey Whipled2dr....if you don't mind me asking....how did you go about tuning for the 42's?
Just IFR or did you also change pulse width, voltage offset etc?
I can't find ANY info/spec's on the 42's

Thanks

Howard