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zcoker zcoker is offline
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Join Date: Aug 2008
Location: S. Florida
Posts: 321
Originally Posted by Andy930 View Post
The turbo is a k26. Both the cold and hot sides have been modified. We suffer a fair amount of lag, so at this level you dont want too big of a turbo. You can modify the 26 to flow around 550hp. The exhaust side holds the answers to low end power and after the hot wheel we dont want any back pressure with nice flowing pipes and as least bends/restrictions as possible. I have looked at the various aftermarket headers and they look great right up to the awkward collector so i use the euro system,while longer has a nicer entry to the turbo,plus heat wrap it to keep the gas hot. We dont want to big diameter pipe from the cyl head because gas speed suffers if its too large. Understanding flow rates of different pipe lengths and diameters can be tricky.. a 3'' pipe 3feet long might flow roughly the same as a 2.5'' pipe 2feet long. Boost pressure need not be too excessive because as we compress air it gets really hot and this causes pinging and then the intercooler cant keep up and so on. Theres not really one part you could say thats the secret ingredient,rather the commimg together of all the little things that make the bigger picture These smile things are great!

Very interesting that you prefer and use the factory Euro exhaust system over all the other aftermarket stuff out there. Your quarter mile results certainly tell the tale, proof in the pudding. You claim better transition into the turbo. Have you used any other aftermarket exhaust system to compare?
Old 08-29-2010, 01:18 PM
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