S4 boost problems with oem exhaust
08-20-2014, 10:25 PM
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S4 boost problems with oem exhaust
Hi, the problem with my s4 b5 stage 3. I had XS-power turboback exhaust resonated 2x2.5", car pushed 22-23psi, but it was really too loud for me. Few days ago, I returned to the stock exhaust with piggie downpipes and noticed, that my s4 can reach only 15psi of boost!
Is it possible, that it's oem exhaust's fault? is it so restrictive?
Is it possible, that it's oem exhaust's fault? is it so restrictive?
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