Anyone here running this?

[Silence]

If so, what are your thoughts on it? Any gains if you were running a Testpipe previously? Are you using the PES or APR kit with it? TIA


http://www.tantrumwerks.com/html/18shotgunphotos.html

[skene]

it's a test pipe... what's there to know?

It removes the cat.

[Silence]

It's not just a testpipe......

[MR VTEC]

it's a super-test-pipe!

[EVIL-AUDI]

Then what is it if it's not just a testpipe. Seems pretty simple to me.

[Silence]

Don't have time to explain, so here's an excerpt form Labree's webpage

"Split Downpipes are also known as “divorced wastegate downpipes” in other areas of tuning. The reason this type of downpipe works better is because the exhaust coming off the turbo wheel (turbine) is spinning extremely fast and whipping in a circle. By keeping the exhaust in a pipe similar to the size of the exhaust wheel and separating the wastegate you dramatically speed up the velocity of the exhaust gases causing the turbos to spool about 500 rpm sooner than in open-mouth downpipe design.

If the exhaust comes off the turbo wheel and enters a much larger, colder area, it becomes more turbulent, slowing the exhaust velocity. In addition, when the wastegate opens, the two turbulent exhaust gases fight each other causing more turbulence and slower exhaust gas exit speeds. This is the case in open-mouth downpipe designs which currently exist in the market.

Please keep in mind that even though the downpipe is split & separates the flow into 2 separate pipes, the overall diameter of the opening at the turbo is 3 inches. The downpipe then merges the flow into a 2.5 inch “collector section” downstream and continues at 2.5 inches into the catalytic converter or test pipe."

[MR VTEC]

d.p. or t.p.

[nizmosx]

these are completely different. this setup is superior to what most of us have. i wish i had the link that realy explaind this. my buddy is putting a setup like this on his wrx, the exhaust with this type of setup makes the most power on the wrx's due to its design. the difference i belive if i remember correctly how he explained it to me. (I WAS DRUNK IN A BAR) he says that one bolts to the exhaust of the turbo and the other pipe bolts onto his wastegate. this is so the wastegate has its own seperate passage way and doesnt have to struggle resulting in faster exhaust gas exit. i realy want to run this setup but i have an evo cat im bout to put in and, i think this is only for stage 3 a4s. good find i didnt know they made this for A4's

[Devious27t]

split pipes dyno more power.... to put it simply. to get a little more technical splitting them helps with outflow velocity and creates less turbulence within the exhaust, the result is freer flowing and better spool. i dont have data to back it up that is just what corky bell told me

[Silence]

More info on the benefits of splits

http://www.tantrumwerks.com/html/Spl...t%20theory.pdf

[skene]

This more over works when you have an external waste gate.... not an internal waste gate.

I understand the concept behind it.. but definately not for that type of turbo. you are just creating more turbulence inside of the downpipe.

[Silence]

Wrong again. This would be of no benefit to an external wastegate. Perhaps you should read the article again.

[MR VTEC]

i'm not clickin that link it says it has harmful information that can jack up my cpu

[Devious27t]

Originally posted by skene
This more over works when you have an external waste gate.... not an internal waste gate.

I understand the concept behind it.. but definately not for that type of turbo. you are just creating more turbulence inside of the downpipe.

you are ass backwards on this one... external gates come off of the manifold and they have their own split pipe for the gate exhaust. this would in no way fit anything that has an external gate.

this actually reduces turbulence in the DP allowing for greater exhaust flow velocity.