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Discussion Starter #1
I installed a turbo muffler delete by MAMBATEK P/N K026-0134

I have two issues;

At idle there is a noise, that continues for a second after shutdown. (turbo spinning down?) The noise (Growl or blower sound) goes away with any throttle

Under full throttle, when I release the throttle sharply, the car has always made a "POP POP" sound. I believe that was the maximum manifold pressure relief valve bleeding off the over pressure. Does this "Turbo Muffler Connector" bypass the relief valve ??
 

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Discussion Starter #2
OK, to answer my own question...

I reinstalled the original turbo muffler, visually inspected if the "Turbo Muffler" was blocking the pressure relief. It was not blocking anything...

Original turbo muffler, pops very slightly at 6000 rpm when shifting, seems to have weaker boost into second gear when compared to the "MAMBATEK P/N K026-0134 installation" ??

Idle noise is "Muffled" somewhat.

At this point I believe the change in "POP POP" behavior is due to the installation of a Rebuilt HPFP. I will reinstall the MAMBATEK P/N K026-0134 at some point...
 
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