underpressureWs6

iTrader: (17)

Powers leveling off starting at 4300 rpms and can't figure out why, I attached a dyno graph so you can see what I'm talking about, car is a 00 trans am ws6 LS2 block 365ci, PRC stage 2.5 LS6 heads, LS6 intake manifold, ECS big blower cam, R&R steel billet rods, stock crank, manley forged pistons 10:1 compression, D1sc 14# of boost, twin 4.5 intercoolers, methanol injection 60/40 mix with water, lvl 7 4l65 trans, yank py 3400 converter, moser 9 inch, 3.50 gears. Let me know if you guys need more info, thanks for the help

underpressureWs6

iTrader: (17)

I'm on my cellphone and trying to upload the picture of my dynograph but its not letting me so any help would be appreciated lol

underpressureWs6

iTrader: (17)

Anyway peak torque is 641 at 4300 rpm and power peaks out at 527 at 4300 rpm and stays at this power level all the way through 6500 instead of climbing like it should

chiaj144

iTrader: (4)

What is the boost doing? What kind of dyno? My turbo setup would actually drop power after 5k or so but it was dropping boost as well. The dyno couldn't load the car enough. I would make 14lbs or so at 5k and be down to 10 or so at 6500. On the street it makes the 14 to 6500. How does it feel on the street. Does it pull to redline or does it lay over?

underpressureWs6

iTrader: (17)

The boost stays at 14 at 6500rpms but on the street it keeps pulling hard it doesn't flatten out at all

3.8redbird

iTrader: (3)

What springs?

3.8redbird

iTrader: (3)

What kind of dyno?

I know my local one used to suck at loading turbo and centri cars due to a crap brake.

underpressureWs6

iTrader: (17)

On a dynapak and a mustang dyno its done this except on the dyna pak it read a bit higher 648rwtq at 4300rpm and 644rwhp at 5400rpms and stayed there untill 6500 rpm instead of climbing

underpressureWs6

iTrader: (17)

Prc dual valvesprings

ablakez28

iTrader: (9)

I had this happen when I accidentally installed the wrong MAP sensor table. Still made 790rwhp haha but car fell off around the same spot. Fixed it and made 975rwhp

underpressureWs6

iTrader: (17)

Wow that never occurred to me, ill talk to my tuner and see what hethinks aabout that

Old Geezer

iTrader: (3)

Data logs??????