Sorry about the long post. The day didn't start off too well. On the way to breakfast with Mike (mrinaldi), my truck was pinging like you wouldn't believe. I just touch the throttle lightly and it sounded like popcorn under the hood. Up until today I have NEVER heard any pinging. Of course it was 8 degF this morning at 9am. The last time I drove the truck was when everyone got together last week, and I had no problems. Well this week I had the interior apart doing the console mod. Long story short, I flipped the chip to my race side by mistake. Boy, JDM wasn't kidding when they told me that I better have race gas in there.

SO we get to the dyno and their wideband was bad. So now we are waiting for UPS to deliver (By 10:30). 11:00 comes, no UPS, but the pipes in the bathroom of the dyno place break. So now eveyone is trying to stop the water from coming out of the walls and the UPS guy shows up (11:50). So much for 10:30 delivery. We get the wideband installed and start pulling.

The first pull the engine was at operating temperature and the next two pulls were hot lapped. Only 1 minute between 1 and 2 and 11 mintues between 2 and 3.

I am not sure if you can read the graphs because I had to take pictures of them, but here are the #'s. The numbers are STD.

1st: 419.9 hp, 526.1 tqe
2nd: 420.5 hp, 530.7 tqe
3rd: 411.2 hp, 527.4 tqe.

All are pretty consistant with each other. The only thing I am a little concerned about was the A/F. At around 4400 rpm it finally gets under 13 and settles to 12 at 4900.

I couldn't get the Forum Codes to post the pics, but here's the link to my graph.
Paul Dyno

Mike's numbers are similar. He has all of the same bolt on's pretty much and a different JDM burn.


1st: 413.3 hp, 535.2 tqe
2nd: 413.7 hp, 539.6 tqe
3rd: 407.8 hp, 534.0 tqe.

I made a little more HP and Mike made a little more Torque. My graph is a little more even throughout the rpm range though. See
Mike's Graph

Don's Bolt had said that they thought Crazy Horse Dyno was high on the torque figures.

From Mike's earlier post Post

First pull - 415.6 max hp/530.3 max torque
Second pull(hot) - 400.7 hp/498.7 tq
Third pull(1/2 hour cool down) - 408.9 hp/534.9 tq

As you can see, the numbers between the two dynos are pretty consistant.Just Dyno'ed today thread

All in all I am REAL happy with the results . Next month I will take it back after I put the fulll lengths on and Magnaflow setup. Time for some

 

STD is a correction factor (there are like 4 of them). Actual is the only uncorrected numbers.

--Joe

 

Kinda glad I missed you guys then

Iam going to do a before & after pull with the LT"S and hiflow cats next friday

 

Hey Soap...Now I am confused...The guy running the dyno said STD is what the truck just put down... And higher measurements were corrected for "perfect conditions".

 

You are correct Soap, thanks for pointing that out. There was a lot of confusion with correction. Our uncorrected #'s were much higher. Of course I didn't get the print out so I don't have those #'s yet. Damn!

 

From Dynojet's website...

CORRECT-THEN COMPARE

OK. You ran your car on a dyno and its computer spit out a bunch of power and torque numbers. In fact, you have two sets: uncorrected, or "raw," numbers and corrected numbers. Gearheads love to compare numbers. Each dyno is subjected to different atmospheric conditions. To facilitate comparison, there has to be a "standard" to which dyno results conform or are "corrected."
In the United States this is usually Society of Automotive Engineers (SAF) standard J1349 Rev JUN90. Correcting to SAE J1349 alters the data to make it seem as if it was taken when the atmospheric pressure was 29.23 in/hg., the temperature 77°F and the humidity zero.

The degree to which temperature, pressure and humidity affect power output is constant. If we accurately measure those parameters at the dyno location, we'll know the difference between the atmospheric conditions at the time and location of our test and those of SAE J1349. That difference is applied to the raw data and the result is corrected power and torque which we can compare to other data taken anywhere in the world that is also corrected to J1349.

The older PEP software (v4.x) corrects only to SAE J1349. The newest WinPEP (v6.03) corrects to not only J1349, but to other standards, including "standard corrected," popular with aftermarket manufacturers (no doubt because it uses 29.92 in/hg and 68°F' to get bigger numbers), "EEC," used in Asia and parts of Europe, and "DIN," used in Germany.

 

Another..FREAK!!!!!!

Congrats, Paul. That pinging on the race side has me thinking now. I need to get back in touch with JDM and find out exactly what mine is programmed for on the track side. I haven't had any issues with it running on pump gas, but I want to make sure.

Again..great numbers!!

Hope to see you guys sometime after the thaw.

Dan

 

Yys, nice F-A-T area under the curves!!! Holy shimoly, that's the good stuff! I wanna be like you.

-Ollie

 

Hey Dan, Next time you are coming with us! We even got to drive them on the dyno.

 

I'd be up for a dyno run and some tuning for sure. Haven't done squat to my truck besides oil changes and Zaino since I bought it in June.

See ya'

Dan