Turbo Escape tube

[Kirby]

I just ran across a problem with another turbo that I play with infrequently (an older 951). Seems that there is a significant problem that occurrs in WOT acceleration when the backpressure at the exhaust impeller is greater than the pressure on the compressor side. All the more reason to have as large an escape tube right off the turbo to release exhaust gasses and make the turbo as efficient as possible! If you hot rod, this could be a longevity issue that would give HP and longer life to our 2.4.[:X]

[Cal Cruzer]

So it sounds like the replacement downpipe and highflow cat is the way to go.

[bigdogdad]

Your talking about the downpipe from AMX, right? Now about the highflow CAT, just what is that, the catalist converter.? As you can see, I don't know about these things but am trying to understand. Thanks for you help.

[Cal Cruzer]

No, I was talking about the downpipe from the turbo flange to the exhaust which has the cat attached to it just before the "cat back"

[Rolo]

Exhaust Manifold --> Flex Joint --> Catalytic Converter --> Intermediate Pipe --> Muffler


Can someone fill in the diameters at each -->