Powerdyne Dyno numbers and continuing frustration

1995MGTS · 03-28-2002, 07:02 PM

Not huge numbers compared to the S-trims, NOVI 2000's, and ATI P/D1's but not bad for a little 800cfm blower. Problem is the car will not pull past 57-5800rpm. The car just kind of bucks and stops pulling at that point. I have heard from others that it might be sparkplug blowout. My plugs are gapped stock (.45?) and need to be more along the lines of .32-.35. Anway, here are the numbers:

1st run: 379.1rwhp/377.9rwtq
2nd run: 392.6rwhp/386.9rwtq
3rd run: 394.8rwhp/386.2rwtq

All numbers are SAE corrected and performed on a dynojet.
Max boost observed was 9psi at 5700rpm.
My rwtq was 320@2800rpm and finished off at 360@5700rpm.
Air-to-fuel ratio was very rich and was 11:1@5700rpm.

The hp curve showed no signs of dropping off and if I could fix my problem and pull to at least 6000rpm, I should see at least a peak of 400rwhp, maybe a bit more. Not bad for a 6lb Powerdyne.

03-28-2002, 07:02 PM	#1
1995MGTS Registered Member Join Date: Mar 2001 Location: Chesapeake, VA USA Posts: 69	Powerdyne Dyno numbers and continuing frustration Not huge numbers compared to the S-trims, NOVI 2000's, and ATI P/D1's but not bad for a little 800cfm blower. Problem is the car will not pull past 57-5800rpm. The car just kind of bucks and stops pulling at that point. I have heard from others that it might be sparkplug blowout. My plugs are gapped stock (.45?) and need to be more along the lines of .32-.35. Anway, here are the numbers: 1st run: 379.1rwhp/377.9rwtq 2nd run: 392.6rwhp/386.9rwtq 3rd run: 394.8rwhp/386.2rwtq All numbers are SAE corrected and performed on a dynojet. Max boost observed was 9psi at 5700rpm. My rwtq was 320@2800rpm and finished off at 360@5700rpm. Air-to-fuel ratio was very rich and was 11:1@5700rpm. The hp curve showed no signs of dropping off and if I could fix my problem and pull to at least 6000rpm, I should see at least a peak of 400rwhp, maybe a bit more. Not bad for a 6lb Powerdyne. __________________ 2003 Redfire Cobra #5978 of 8394 -Pro-5.0 -DC cai -Steeda x-pipe w/cats -Steeda cat-back -Lightning pulley w/Afterburner 441rwhp/434rwtq SAE