RooRnZ28

iTrader: (14)

I finally got a chance to trailer the z28 to Fremont, Ca and have it re-tuned for all the stuff i have changed since the turbo kit was first put on. The results were good, I gained 39 hp/ 25 tq at the same 8psi thru a stalled 4L60E and new 9" rear.

Thanks to Scott @ Automotion (ClovisAutoMotion) for the installs and all of his help!

Rick @ Synergy for his tuning

and the many sponsors for all their parts on the car!



List of major changes:

stock exhaust manifolds (removed LT headers)
bassani offroad y-pipe
deleted sts over axle intake pipe
deleted sts pcv system
re-did intercooler piping to go over the radiator
installed performabuilt level 3 tranny/3000 stall
installed 9" rear w/ 3.25 gears (from stock 10 bolt, 2.73s)
added magnafuel pressure regulator at the fuel rails


new numbers:
5psi 436/474
8psi 500/527 (rounded hp up .1 )

previous: 460/502 @ 8psi

green: low boost, blue: high boost


still stock bottom and heads!


Just need the weather to cool down so I can get this thing to the track!

Blackbird

sweet.

post some pics of your piping and such.

I plan on turning mine up to 8psi here fairly soon.

RooRnZ28

iTrader: (14)

i'll snap some pics of the changes this week...


the tuning really woke this car up... If feels so snappy now even at part throttle! Rick even said it was running good for a rear mount, lol!

Blackbird

thats what I need to do is get my tune sorted out.
it's a slug right now

RooRnZ28

iTrader: (14)

this car was a slug too before the tuning. With the pressure regulator moved to the rails, it was pig rich under boost and would surge at idle.

I was driving it yesterday in the crappy 100+ degree heat and everything was still pretty crisp.