Quote:
Originally Posted by BB_cuda
post #11 shows the wastegate that iaknown "opened up". See exhaust thread for why. Save your diffuser that goes between the DPF and midpipe flanges. One forum member put this back to show benefit of some back pressure in path to keep boost pressure from going too high. If you're for sure going to open exhaust, now is the time to think of addressing the wastegate or diffuser "put back". Go read that thread where the folks are addressing overboost.
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I was following that thread closely as I remember that Jarek told me that the stage 2 tune and hard driving could cause overboost issues because the waste gates were not able to get rid of the pressure fast enough.
I just talked to Jarek again 2 days ago addressing this issue and he said it is definitely a good idea to port it while I'm at it. Here's a closer look at the low pressure turbo and wastegate: