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View Full Version : First time my car was on the dyno!!! Thanks Matrix!!



tkarwin
12-11-2005, 11:31 AM
On Saturday the 10th, as many of you know, Matrix Integrated had a Dyno day where all of the proceeds went to the Toys for Tots charity. It was a good time and I was really excited to Dyno my car. Thanks Jeremy and crew!

The only mods done to my engine are a hyperboost HX compact DV and and APR 91 Octane chip. I was pleased with my numbers for horsepower, but I didn't make the torque that APR claims...

http://i18.photobucket.com/albums/b129/karwint/DynoGraph10-10-05.jpg

I used a drivetrain loss factor of 25% to estimate my power at the crank and that put me at 210hp and 212 ft/lbs.

Let me know if you guys have any suggestions as to why I am not making the torque I should. APR claims 240 ft/lbs or so. Thanks for the help and thanks again to Matrix!

CaSp3r9
12-11-2005, 11:43 AM
TED!
Hey, it's Blair. I was looking for you on here and I couldn't find you... but now I did!
I was pretty impressed with those numbers as well, taking into account that your car is pretty much stock except for the APR chip and DV. But I still got you by quite a bit and my power curves... well, you saw them... you gotta catch up to me man! [:D] [drive]
Anyway..... You gotta work on gettin exhaust/high flow cat/down pipe!! I'm tellin you man... go with the Magnaflow cat back like I have, you've heard it... It's alotta bang for your buck! And it increases the HP/TQ probably more than you'd expect from a system that only costs $575 INSTALLED!
As for your torque... I'm not sure as to why It's low... Maybe it's because you have stock exhaust, which as you know is very restrictive. When I multiply my awtq by 1.25 I come out with 235.6 ft. lbs. at the crank which is pretty close to the 240 ft. lbs. that APR claims.
Keep in touch! We should definitely go snowboarding together sometime.
IM me on AIM @ CaSp3r9
[a4]

tkarwin
12-11-2005, 11:48 AM
Hey Blair, What's up? You know it is on now! I gotta catch your numbers man. I was really impressed with your car. I added you to my buddy list for AZ and I wll put you on my AIM list too. Peace, Ted.

P.S. Post your graph man! You should be proud of that!!!

Grouse
12-11-2005, 12:47 PM
Is this a TIP?

I'm trying to figure out why your using 1.25 if it is not a tip.

I know for my 6 speed it actually works out closer to 1.21 or 1.22

tkarwin
12-11-2005, 12:56 PM
Originally posted by Grouse
Is this a TIP?

Nope, not a tip. I was just estimating with 1.25. I am not sure what numbers to use. Everyone Tells me something different. The numbers that really matter are the wheel hp ones so I am still pretty pleased. Does my torque seem low? I think it might be.

Grouse
12-11-2005, 02:21 PM
i fubar'd the math.. this is my attempt at hiding my brainlessness

bitterchild
12-11-2005, 03:04 PM
Your plugs

Yay for tots

tkarwin
12-11-2005, 04:12 PM
Originally posted by bitterchild
Your plugs
I changed my spark plugs about 10k ago.

IKE20VA4
12-16-2005, 11:09 AM
ah that makes me curious what i am making because i have that same setup. I'm switching to GIAC though so we'll see. are you using platinum or coppers?

mike-2ptzero
12-16-2005, 11:47 AM
tkarwin:

Your math is off. Plus the problem is that 1.25 does not equal 25% drive line loss, it equals 20% as you can see below.

To figure whp from chp
250-25%=187
250-20%=200

to figure chp from whp
(200x100)/80=250

So if you guys do plan on using 1.25 as your driveline loss, you will only increase the whp by 20% to figure out your crank hp. If you want a 25% drive line loss you mulitiply the whp by 1.33.



I just use a drive line loss of 22% or 1.28

SeKKeY
12-16-2005, 12:25 PM
i have the same setup, except i have a evo intake. i guess i should see the same numbers...an exhaust makes that much of a difference huh (referring to the other guy's dyno sheet)

tkarwin
12-16-2005, 01:01 PM
Originally posted by mike-2ptzero
tkarwin:

Your math is off. Plus the problem is that 1.25 does not equal 25% drive line loss, it equals 20% as you can see below.

To figure whp from chp
250-25%=187
250-20%=200

to figure chp from whp
(200x100)/80=250

So if you guys do plan on using 1.25 as your driveline loss, you will only increase the whp by 20% to figure out your crank hp. If you want a 25% drive line loss you mulitiply the whp by 1.33.



I just use a drive line loss of 22% or 1.28

Thanks for the info Mike. I was wondering if my math was correct. I will be using 1.28 now, 22% seems like a good figure for quattro cars.

20vturboA4, my spark plugs are platinum.