& at 25lbs the car made 684 @ dynodynamics. took it to the dynojet and it made 560. weird??

same tune. didnt change anything!!!

 

Post a plot dude. Im really curious to see what your powerband looks like

 

That's because it's two different dyno's.

You can also have two dyno's, of the same brand and model,
in the same race shop, and get two different numbers.

 

the powerband is so smooth because of the rear housing i changed ( went from a 1.30 ar to a 1.00) the powerband starts to rise @ 5k and the 560/680 flattens at 7800rpms and stays flat until i redline at 9k!

dont have the dynosheet cause I LOST IT same day after i got home

 

the shops have it on there computer most likely call them and get them to email you a copy

 

When ppl ask how much HP you made, make sure you tell them the highest number or people will think your car is not setup properly.

 

Very informative post here... lol



Yeah, Dyno numbers are just that, a number, all that really matters is how good of a tune you have, and your times will tell the story of power.

Different places will have different corrections on their dyno's, which will lead to different numbers being shown. I am honestly surprised that the Dyno Dynamics dyno showed such a higher number, in my experience Dyno Dynamics tend to be VERY stingy with giving high numbers! lol. Oh well, who ever ran that dyno must have wanted it to show higher numbers.

 

lol this

 

Your experience is right

I think you are not familiar with this "drama" https://www.rx7club.com/showthread.p...rkphantom+dyno

There was huge correction factor(something like 1.5) and car was barely loaded on that pull

When you do simple math, 737 whp(as in other thread and on the video), divide by 1.5 and using 1.16 factor for comparing Dyno Dynamics and Dynojet, it comes pretty close to 560 whp

 

lol pwned

Btw, im so jealous you live in czech republic. I think that country has some of the HOTTEST girls in the world. Have you been to "big sister" yet??

 

I do all my dyno testing uncorrected. After reading the actual SAE paper on how REAL dyno testing is done and the REAL correction formula, I don't trust any Dynojet etc corrections. SAE corrections were not meant to be used the way that shops use them. Read what the actual SAE regs say:



That's SAE J1349 revision 3 (2004) page 7, which contains the latest horsepower testing standards and correction formulas. You can PM me about this document if you want.

15% correction is absurd. 3% is the max allowable in any manufacturer horsepower test, and that's only when the testing is done under SAE mandated lab conditions. SAE actually requires a rep to observe and sign off on any official manufacturer horsepower test now.

 

Elevation, ambient temp and humidity all play into it....dyno the car near sea level on a nice cool/cold day. As the spec above states, anything more than a minor correction should never be performed.