Do my Dyno #s look low?
Race Director
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
to the OP, given you are dynoing through 4.10s, figure your over 400 without them. 400-415 is the normal HP range with TSP heads
Last edited by Ikester; Aug 30, 2008 at 03:52 PM.
Burning Brakes
Joined: Mar 2005
Posts: 1,187
Likes: 2
From: Houston Texas
St. Jude Donor '08
The previous post re: Mustang Dyno is correct (Mustang Dyno's tend to post numbers that are approx. 10% lower than DynoJet 248). Dynapack's at your horsepower range tend to be very close to DynoJet numbers.
If you could post dyno sheet I am sure that some of the more knowledgeable persons on this forum could provide you with additional information.
If you could post dyno sheet I am sure that some of the more knowledgeable persons on this forum could provide you with additional information.
IF you use a Mustang dyno or a Dynojet, it doesn't matter which as long as the setup takes into account temp, elevation, etc, etc, to arrive at the corrected SAE horsepower. Here may be a few HP differnece between a Dynojet and Mustang, even if both set up correctly but 10% difference?? Get real. If that is the case then my stock block, bolt on only '99 FRC (God rest it's soul) put down 371RWHP on a Mustang and by the 10% statement it should show over 400RWHP on a Dynojet?? Don't think so 'cause it was done on both and the Dynojet, properly set up, showed exactly 7rwhp higher than the Mustang which is less t han 2% variance. The point is,a dyno is only as accurate as the tuner is good. It all depends on the tuner no matter what type of Dyno you use. If they aren't set up right, not calibrated for SAE numbers, then it just ain't accurate no matter how you slice it. Dynos are, as stated earlier, a tool. Track it and get numbers from the TRACK 'cause that's where it's at.
And just my $0.02 worth, Thunder seems to have missed the boat on your tune because you should be making at least 420RWHP. Mine made 460.5RWHP(Dynojet, ASE corrected) and 451RWHP (Mustang dyno, ASE corrected) with just a little more head work than you have (check my sig).
Get another tune and then let us know and TAKE IT TO THE TRACK!!!!
Drifting
Joined: Nov 2004
Posts: 1,650
Likes: 4
From: Ringgold GA
I don't quite agree with this but I may just be real stupid.
IF you use a Mustang dyno or a Dynojet, it doesn't matter which as long as the setup takes into account temp, elevation, etc, etc, to arrive at the corrected SAE horsepower. Here may be a few HP differnece between a Dynojet and Mustang, even if both set up correctly but 10% difference?? Get real. If that is the case then my stock block, bolt on only '99 FRC (God rest it's soul) put down 371RWHP on a Mustang and by the 10% statement it should show over 400RWHP on a Dynojet?? Don't think so 'cause it was done on both and the Dynojet, properly set up, showed exactly 7rwhp higher than the Mustang which is less t han 2% variance. The point is,a dyno is only as accurate as the tuner is good. It all depends on the tuner no matter what type of Dyno you use. If they aren't set up right, not calibrated for SAE numbers, then it just ain't accurate no matter how you slice it. Dynos are, as stated earlier, a tool. Track it and get numbers from the TRACK 'cause that's where it's at.
IF you use a Mustang dyno or a Dynojet, it doesn't matter which as long as the setup takes into account temp, elevation, etc, etc, to arrive at the corrected SAE horsepower. Here may be a few HP differnece between a Dynojet and Mustang, even if both set up correctly but 10% difference?? Get real. If that is the case then my stock block, bolt on only '99 FRC (God rest it's soul) put down 371RWHP on a Mustang and by the 10% statement it should show over 400RWHP on a Dynojet?? Don't think so 'cause it was done on both and the Dynojet, properly set up, showed exactly 7rwhp higher than the Mustang which is less t han 2% variance. The point is,a dyno is only as accurate as the tuner is good. It all depends on the tuner no matter what type of Dyno you use. If they aren't set up right, not calibrated for SAE numbers, then it just ain't accurate no matter how you slice it. Dynos are, as stated earlier, a tool. Track it and get numbers from the TRACK 'cause that's where it's at.
