sean25

Im just curious what my 1.8TQM is puting out. Im going to get it on a dyno asap but the one near me wont be finished for a while. I have the apr v3 chip, borla cat-back exhaust, and a k&n filter. Any guesses or ideas? Its a 2001, so the apr chip should be making 207hp.

Audiboy

Hmmm, filter 0.1, Borla +5, APR +37hp, so 209.081 hp Can't add, but it's not the sum of parts

Dr. Mike

Hi!

Don't add hp "claims" for bolt-ons to get an estimate. It boils down to air+fuel=power, a KO3 in a 2001 can only do what any KO3 from any year can do with 1.8L of diplacement to feed. The best dyno numbers out there give a 1bar chip with filter and exhaust 169hp on a front-trak Audi/VW, figure 162? for the quattro.

When aftermarket tuners rate the hp back up to flywheel numbers they can make any assumption they wish, usually multiplying the wheel hp numbers by anything from 1.15-1.2 usually.

These assumptions should be taken with a grain of salt, as drivetrain losses are not a linear function (i.e. a stock car loses 11% to drivetrain losses means the tuned car will also lose 11%). Higher rotational inertia, clutch slippage, changes in lubricant viscocity under more severe conditions can change this number to a noticeable degree.

My "estimate" is your car is making a healthy 195 hp. With the reduced weight of the 1.8T vs the 2.8 you should see performace numbers slightly better than those reported for a stock 2.8 with the same drivetrain (ie, tip vs. manual; quattro vs. front trak).

I used to race Integras, and found it always to your advantage to underrate your hp figures and have your competition be jealously suprised, than try to live up to an inflated (and sometimes fictional) claim and be dissapointed.

Just my $0.02

Enjoy the road!

Michael

CMH

and I am making around 217 hp.

Dr. Mike

Hey there,

How did you come up with 217? And why do you say "around" 217? Has the car been dyno-ed? Have you done any 1/4 mile runs on a strip or with a G-Tech?

Please post any of this info that you have, I'm impressed if you can get that out of a KO3!

Merry Christmas,

Michael

CMH

I run 14.8 thru 15.0 everytime with my Garret chips.

Dr. Mike

Hiya,

It is an impressive run, I do admit, one I will someday emulate, but with your numbers I get-

assuming 3300lbs for you and the car:

178.32hp to the wheels
and assuming a 15% loss to drivetrain:
209.79hp at the flywheel

I'm assuming this is a quattro car, and used the MPH rather than ET for a more accurate pic of whats going on.

Hopefully a 4wd dyno is in your plans, I'd be curious to see how well the drag #s and our estimates correlate with what is actually there.

Your car is definately impressive, I just am more conservative with my estimates!

Best regards,

Michael

CMH

BTW do you know the exact weight of our 2000 1.8tqm cars. I put in 3200+135(me).

CMH

And yes I am on the list for the Eurospeed.com dyno test but am not sure if it will ever happen.

Dr. Mike

Hey,

I used the weight in the Auid A4 brochure (which is what Car&Driver quotes in their comparisions) for our cars- 3190. I think this is with all fluids filled. You would have to drop some weight for your lighter exhaust system in your calculation.

I hope Eurospeed does that comparo - suddenly any reference to it has dissapeared from their site, your car would make a great test!

Happy New Year!

Michael (still hoping for 14.8!)