I went to the dyno Sun at Gintani for my first dyno and this was the result:

Relevant mods are in sig below, ambient temp was around 90, we were close to sea level, don't know what the humidity was. The pulls were done back to back to back with no cool down(it was a charity event ). I had just driven 93 mi. to get there and the car was driven right in and dyno'd:

1st

2nd

3rd


Overall I was a little surprised by the result. I was really expecting around 170whp. I was really jazzed by my torque #'s which were a lot higher than others. I attribute them to GIAC and maybe the engine damper which is set very stiff. Looking for feedback on how to get more, maybe headers next

 

IT looks like the hotter it got, the worst it did.

 

I am no expert, but I am guessing if it was 40 degrees ambient, you would have over 190 whp. Thats why I'm waiting until winter to dyno :-)

 

definately shows what heat soak does

 

Nice numbers, you gotta be proud! What is your best guess of your peak torque figure? It looks like it occurred on the first run, but I can't read the graph well enough to tell.

 

dynos are corrected for temperature, altitude, and humidity. On a boosted motor, heat soak might play a factor in whp at higher temps, but only slight, as most of the effect is corrected for in that data already. I know where I dyno'd my wife's car they had their dyno hooked up to an RSS feed with weather data for accurate correction factors.

 

Deleted for incorrect info. Dyno results bellow.

 

Pretty good numbers considering the mods!

I doubt your engine damper had anything to do with the tq numbers though.

 

It was 167 fp

Thanks I was not expecting 180 whp. Made me feel like my last 8 months of tinkering amounted to something. Actually when we watched other cars dyno, you could see the engines moving back and forth quite a distance. Mine barely moved at all since I adjusted the damper to be very stiff. Others there had them, but they were adjusted for comfort which allows more engine movement. If you transfer that movement to the wheels, then it does make a difference in performance. Not sure if it equals torque though. I have a 1.8T Jetta and one of the best mods I did that dramatically improved take off and drastically reduced wheel hop was changing the lower pendulum engine mount to a much stiffer mount.

 

while it improved feel, one the wheels are rolling, it aint making any more power for ya on the dyno.

 

Here are my results. Same day. '06 JCW + MTH. 184whp/160 f/lbs torque.







Lighter wheels and brakes and I cooler temps and I think 190 is not out of the question.

 

Those are good numbers!! I just Dyno'd my stock 06 at 98* and managed a whopping 145.79 HP and 138.11 Tq!! But with the cold air allowing the S/C sound to SCREAM.. that makes no matter what I have, worth it!! LOL

We also made a few runs on a 04 S with the usual bolt ons and a set of ported Thumper Heads.. again 98* of good ole florida air, and made 205 Wheel HP!! Now THAT rocks!! ( 14% drive train loss = 233 BHP !!)

Just me...................................

Thumper

 

Do you remember what kind of Dyno it was? -- Johan

 

The part about the correction for the dyno is correct, but the heat soak will massivly kill power. The IC can't cool the charge, and IATs go up. Timing is retarded, and if it goes high enough, it will dump EVEN MORE FUEL. Power will tank SIGNIFICANTLY. But not due to the dyno correction, due to ECU intervention.

There are lots and lots and lots of posts about how hard it is to accurately dyno a Mini. This is a 13 HP drop in just three pulls. I'd call that more than "only slight".

Matt

 

Which makes Little Egg's results interesting as there is only 1 hp drop between pulls.

 

First: Nice numbers!

How is the NVH hit with the engine damper? Big difference? Would a Significant Other notice the difference in NVH just driving around?

thanks!

 

Matt

 

Clayton chassis dynamometer

Thanks; I am not sure what you mean by NVH though

 

harshness, I think. It's about all the little rattling and bumping that makes the driving experience a downer.

Matt

 

Thanks for the clarification. At first there was no difference in the NVH, but I adjusted it stiffer and it increased a little, but not enough to be anywhere near a nuisance. The car is my wife's daily driver and she doesn't complain. I would actually like to do more of the motor mounts because on my Jetta it made a huge difference in performance.

 

Matt