After months of "tweaking" and "tinkering" I finally got my 04 GTO down to the local dyno. Don't know anything about superflow's as to how they compare with Mustangs or Dynojets?

The GTO Procharger setup has the IAT sensor located to the airfilter, I had previously installed a bung on the intake tube just prior to the TB. With the Alky spraying my IAT's are a cool mid 60's F, with ambient temps around 80ish. Unfortunately my Alky system started to blow fuses once on the dyno....source of trouble yet to be identified. In any case I forgot to relocate the IAT sensor back to the airfilter so my dyno results are based on very high IAT's and the resulting low timing.

Here is the Chart:





612 HP / Peak power came at 5845 RPM which posted these paramaters:

KPA: 176
Inj duty: 68%
AFR: 11.99 (scaled to go down to 11.5 @ max boost)
timing: +9.5
IAT: 122

From 5500 up IAT jumps steadily from 106* to 151* and timing falls to 7.5*

650TQ / Peak Torque was posted @ 4676 RPM

KPA: 146.3
Inj Duty: 48%
AFR: 13.12
timing: 10.5
IAT: 106


While the HP #'s left me a little disapointed, the TQ #'s prove encouraging. Considering peak HP came considerably under max RPM and boost(6500/13psi), along with alot of timing being pulled, once the timing advance situation is sorted out and IAT temps stabilized I think the HP will come in line nicely....Hopefully these fixes will round out the tq dip as well.....we shall see.

Anybody care to guess how much is left on the table?????

Considering this is a "Cali" car, and trying to keep things somewhat SMOG sniffer compliant, I think I am doing alright. Plans are to "Max" out the P1 hopefully somewhere in the mid to high 600HP range. Then mount the F1-C and find out what that will do to my poor drivetrain. At this rate I am not sure the car will ever really be done......but the journey thus far has been a blast.

 

Nice results!

 

wow thats awesome for a P1.

 

Thanks guys...

a few more tweaks should wake her up a little more....

 

I was really suprised to see those results on a P1. With those few little tweaks you mentioned it should pick up very nicely.

 

Great numbers. My stock cube, small cam/headers P1 02 Z06 made 635/550 on 10lbs restricted. I stopped the pull at 6,300 but it was still pulling. The P1 is capable of alot more than people are giving it credit for. I would love to see you get 700+rw with it. That was my goal. I am surprised to see your IAT get up there with the meth. Time to add more or it isn't fireing. It should keep your temps within 10* ambient. My IAT's would kill my power as well untill I put the meth on. I think I ran 14*-16* total advance.

 

f1r time????

 

As stated my "road tests" had my IAT's actually 20* lower than ambient. for some reason my alky system was inoperative on the dyno.....kept blowing fuses? which explains the pulled timing and less than hoped for HP #'s.

700 may be a little optomistic, but would be nice to achieve with such a moderate setup.....

When I get home, time to find out what my alky systems problem is, then find my timing issues.....once that is resolved back to the dyno

 

F1C is sitting on the shelf awaiting installation

 

nice, definetly F1 time

 

Superflows have Mustang dyno characteristics but dyno with in 1 hp of Dynojets. I have used both.

 

I think the P1sc can be pushed to 700rwhp with a high CR, but 650 is my max. I think the lowered CR and big cubs hurt the P1sc.

PS My sig is with a P1SC on a 427 A4 stalled

 

great numbers,congrats