$330 - $475 

 This RAW finish 3" 304 stainless steel downpipe is an external wastegate setup.  We offer two sizes of wastegates, 38mm and 46mm.  I am running the 38mm version on my own GN and consistently run around 24 lbs of boost without any problems.   Includes all hardware and gasket for the turbo.

Just few tidbits on this downpipe.  It is designed to allow the use of all the aftermarket headers out there BUT will also work with the stock Buick headers.  Since the pipe is farther outboard than the stock downpipe and aftermarket downpipes designed to work with stock headers it requires some minor trimming of the inner fenderwell, real easy to do with a dremel tool.  Have a pic of how I trimmed it below.  My own GN is lowered with drop spindles and the front springs are also cut a bit so it sits REAL low.  Clearance to the upper control arm is tight if the car is lowered but so far so good on my GN.  Other than that the fit is excellent.  Just want my customers to know up front what to expect.   The OPTIONAL dump pipe available is a nice tight slip fit and no clamp is required. 

If you do NOT already have a boost controller you WILL need to get one as the spring in the external wastegate is set for 10lbs.  We are carrying the Turbonetics 0-50 lb boost controller so you can order one of those if needed.  You can also use the RJC style boost controller as well as the many other types that are out there.

I see a lot of external gate downpipes being run out there without a turbo shield.  Really hate the look of that and want everyone to know that the custom turbo shields that we sell WILL FIT this downpipe without ANY mods.

Options - DUMP PIPE $85
TURBONETICS 0-50lb BOOST CONTROLLER $90

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