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Old 10-11-2008, 11:44 AM   #1
Scooby Specialist
Member#: 143264
Join Date: Mar 2007
Chapter/Region: RMIC
Location: Utah
2006 WRX TR
Obsidian Black Pearl

Default APv2 Horsepower Performance Calculator

I updated my Accessport and in the performance area with the 0-60 and the 1/4 mile estimates is a new performance feature, Horsepower. It says it is a Wheel hp calculator. So I decided to give it a rip and see the accuracy. I have been Dynoed recently on Cobbs Mustang dyno and on Pump 91 octane I made 310 whp.

I stayed with in the parameters Cobb dynos in. start test at about 2800 rpm in 4th gear and I ended the test at 6750 rpm. My car weighs 3460 lbs with me in it and 1/2 a tank of gas. I know this because my work has a truck scale that is certified. I did my first pull and... 385 torq and 408 whp

That seemed a bit high and I was on a slight down hill so I found a more level surface and did it again... 356 torq and 352 whp. that seemed better and closer to my actual numbers. But what the hell lets do it again. This time with a slight up hill, 382 torq and 358 whp.

I am in a 2007 STi with a Dom III, peak psi is 19 tapering to 17.5 for reliability. In Utah at 4500 ft above sea level with pump gas. Race gas is more, but that doesn't matter. I am curious to see what other people are HONESTLY making on there APv2 for stage 2 as well as other turbo's.

List. Model year and car.
Turbo or stage 1 or 2
sea level or at elevation
gas used
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Old 10-11-2008, 12:03 PM   #2
Scooby Specialist
Member#: 71718
Join Date: Oct 2004
Chapter/Region: W. Canada


Wirelessly posted (BlackBerry8310/ Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/107)

It's a very poor, inconsistent tool. Inconsistent being the key word. There was a thread somewhere on AP 'dyno' results and Stage 2 STI's were making 350+WHP.

Same goes with the 0-60 and 1/4 mile timers... Fun/good ideas, horribly inaccurate (and inconsistent).

Last edited by squashman; 10-11-2008 at 12:04 PM.
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Old 10-11-2008, 05:26 PM   #3
Scooby Newbie
Member#: 191431
Join Date: Oct 2008
Location: Houston, TX
95 s14 240sx


yea i have a stg 2 wrx and ive gotten 300+ whp...and i should only be in the 225 whp range lol
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