I agree above, something is off.

 

you went 10psi to 400whp the 6 more PSI only got you 43 more psi? need new tune, very inefficient

 

[QUOTE=btstone84,Jul 17 2008, 05:32 PM] you went 10psi to 400whp the 6 more PSI only got you 43 more psi?

 

You need new eyes, very inefficient




Just kidding. You really should have actually looked at the dyno charts before assuming the tune sucked though.

The 10 psi and 401 whp was near redline because I had a bit of boost creep (didn't really mean to hit 10 psi on my first dyno run- you can see the boost creep in the shape of the torque curve). When I finished tuning, I was still at 10 psi at redline, but I had bumped it to 16 psi in the midrange. I also had an extra 25 hp at redline at the same 10 psi. I would have held it at 16 psi, but the fuel system couldn't supply enough fuel. (I'm basing boost values off the readings of the GM 3 bar MAP that were in the log.)

At 5400 rpm, I gained 140 hp and 135 ft-lb between dyno run 1 and dyno run 19. You're right, my tuning really sucks...
Run 1 and Run 19 (Superflow chassis dyno)

Change in Horsepower and Torque from run 1 to 19

Dynojet run for bragging #'s (and to beat out that dyno shop's highest HP street Honda at the time) This was also on 91 octane pump gas.


Tim

 

You'll probably get there with a good tune and an efficient turbo setup. The stock motor has proven to be very capable of high levels of horsepower.

Tim

 

[QUOTE=timg,Jul 17 2008, 11:45 AM] That sounds like a weird case.