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As the subject indicates, I’d like to know if anyone has compared the estimated HP/TQ the Accessport provides with actual dyno results. I have quite a few mods, but don’t believe the estimated numbers to be accurate. I’m getting 427/442...
 

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The Cobb hp/tq estimated numbers are at the crank and not the wheels.
True.

Having compared them to my actual dyno numbers at the wheels, they are actually surprisingly close when using a 15% drivetrain loss. Unlike the old AP2's numbers that were exaggerated to the moon.
 

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True.

Having compared them to my actual dyno numbers at the wheels, they are actually surprisingly close when using a 15% drivetrain loss. Unlike the old AP2's numbers that were exaggerated to the moon.
Same here, I used the Cobb estimate along with my dyno numbers to calculate my drivetrain loss and I believe it was around 16% from memory.

The estimated APv2 numbers were great to show off to friends though! :)
 

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Same here, I used the Cobb estimate along with my dyno numbers to calculate my drivetrain loss and I believe it was around 16% from memory.

The estimated APv2 numbers were great to show off to friends though! :)
If you lose traction, then you can get some seriously spaceship numbers haha

post-313077-14484685523111.jpg
 

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True.

Having compared them to my actual dyno numbers at the wheels, they are actually surprisingly close when using a 15% drivetrain loss. Unlike the old AP2's numbers that were exaggerated to the moon.

C'mon so my stage 1 STi really didn't have 500HP!!!???? Those readings always made me lol.....
 

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Yeah I don’t know how accurate that is lol. My last datalog Shows peaks of 475tq which I kind of doubt for a bolt on stock turbo 91 octane tuned car
 

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Agreed. Lots of people say the numbers are actually pretty accurate but I have my doubts. I think they’re probably useful as a means to validate changes to the same car though.
 

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Yeah I don’t know how accurate that is lol. My last datalog Shows peaks of 475tq which I kind of doubt for a bolt on stock turbo 91 octane tuned car
Wouldnt this equate out to like 404tq to the wheels which would make sense?
 

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Yeah I don’t know how accurate that is lol. My last datalog Shows peaks of 475tq which I kind of doubt for a bolt on stock turbo 91 octane tuned car
I know this is old, but the Torque is in Nm, or Newton-meters, you need to divide the Nm torque by 1.35582 will give lb per foot. Then you can find your actual HP as well.
 

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I know this is old, but the Torque is in Nm, or Newton-meters, you need to divide the Nm torque by 1.35582 will give lb per foot. Then you can find your actual HP as well.
I believe it depends on what you have your AP set to, imperial or metric. I’d have to go back and double check but 99% sure looking through my logs it’s a value in imperial lb-ft as is the boost pressure (psi) and temperature (Fahrenheit). Usually switching to metric will give you bar, Celsius and NM. Could be wrong though
 

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Hmn. If you do data logging , and look at the csv file it creates, the column Req Torque(Nm), is Nm. Don't know if that is different than the actual visual. I always just do the logging and then look at the data that way. I don't know if the requested (Nm) Torque is the same as Torque that is on the display.
 

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Hmn. If you do data logging , and look at the csv file it creates, the column Req Torque(Nm), is Nm. Don't know if that is different than the actual visual. I always just do the logging and then look at the data that way. I don't know if the requested (Nm) Torque is the same as Torque that is on the display.
I'm pretty sure it's dependant on unit settings on the AP. I did a couple logs two days ago to get some 0-60 times (since the performance feature never works for me...), and LTT Torque columns are all in ft-lb. Got my AP and custom tune from Mountune.
 

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You set the units of measure in the settings, various there so be careful to set to the units your tuner requires
 
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