Since there has been a lot of discussion on the topic I decided to do several runs in various gears with and with the Exhaust Valve hooked up and functioning as it was intended and the same runs with it fully open (disconnected and capped the vacuum line). Just for curiosity sake I also tested a K&N panel filter, new out of the box.

Here are the results:

The exhaust valve must not open all the way when hooked up and functioning as stock, if it did the power figures above 3500 rpm should be the same. So running it open seems to be the best choice for HP and Torque.

We are in the process of decoding and tuning the ECU and we will be dyno testing this upgrade and I will post the results here. We will also be testing a full series of exhaust upgrades and different variants of our 2.5” & 3” SS Systems with duel outlets of course. We will dyno and post the results for this as well.

-Rich

Modified by eiprich at 12:24 PM 3-16-2004

APR tuned, APR exhaust, Carbonio cai, Diesel Geek ss, Energy Suspension dogbone inserts

Oh, reply to my email 'bout the turbo kit pricing!!!! I'm dyin' over here!!!

APR tuned, APR exhaust, Carbonio cai, Diesel Geek ss, Energy Suspension dogbone inserts

ian

Email just sent a few minutes ago...

-Rich

Yes it was opening as normal right at 3500 RPM but I agree the transition is surprisingly smooth. We have the entire session on video, we closed the bay door specifically so you can hear the change-over and it is loud when it opens.

We did multiple runs in each gear 3rd, 4th, and 5th just to be sure the results were consistent.

-Rich

ian

Yes...no change from the original stock runs.

Even though it makes power I run mine in stock form, like it quiet...I must be getting old

-Rich

Mike

Quote, originally posted by mec_vw »

Great stuff--thanx for sharing, Rich!

ditto

PTAC!

flickr

How did you disable the AWD? Did you pull the fuse, or disconnect something, or just pull the e-brake?

Thanks for sharing your findings.

Any chance we could see these videos?

ian

MAN, you beat me to it!

Well, I updated my original post with a pic rather than a link.

-Rich

The green one.

But it sorta doesn't matter as it was worth about half a horsepower,
which falls well within the error of margin.

ian

I am a little surprised that the addition of the K&N didnt yield better results. Were you at all suprised at that Rich?

Do you forsee much headway in chip tuning? AMD is claiming 15WHP and has dyno results to back it up. I would love to see a chip with gains up to 20WHP but that just may be impossible.

The results of the exhaust mod combined with an aftermarket chip seem promising. Most chips bump torque about 10lb ft, consider that with the addition of 10 extra lb ft from the exhaust mod and you have some serious torque brewing

"Bottles are for Babies, Real Men get Blown"

Interesting, ND makes 10lb ft and EIP's car made 4lb ft but with HP gains.

What do you think Rich?

"Bottles are for Babies, Real Men get Blown"

You're the expert

Quote, originally posted by Twelvizm »

All that dough on a turbo and still running with he stock air box You're the expert

Actually HGP/HPA are the experts. The must know what they are doing huh?

APR tuned, APR exhaust, Carbonio cai, Diesel Geek ss, Energy Suspension dogbone inserts

Quote, originally posted by Twelvizm »

All that dough on a turbo and still running with he stock air box You're the expert

Open mouth...insert foot

Quote, originally posted by verustung »

So why does the maximum output change over 3400RPM if the vacuum line should already be opened??? New Dimensions only recorded 10lb ft gains, but your results also show an increase of 8HP in addition to some minor torque gains... Interesting, ND makes 10lb ft and EIP's car made 4lb ft but with HP gains. What do you think Rich?

Our car was dynoed in AWD mode on a Dyno Dynamics chassis dyno, so results will vary from EIP's dyno. My results and Rich's results both indicate that the free exhaust mod is really making power, not just more noise.