RE: SP rules on catalytic converters

["Mohler, Jeff" <jeff.mohler@wilcom.com>]

> > Protesting:  If the turbo has the stock casing and part number
> >stamp..fine.  Its probably stock.  But after that you would need a
> teardown
> >to determine if the compressor/turbine wheels are stock (not hard, and
> lots
> >easier than a motor teardown)
> 
> 
> While this is true, I have yet to see a turbo modded with a bigger wheel
> that did not have the inlet casing milled out to accommodate the greater
> flow characteristics of the new compressor.  This is a simple case of
> pulling the intake hose off of the turbo to verify the housing inlet
> diameter.
> Putting a bigger wheel with a stock inlet will get you little gain on most
> cars.
        ---

        I had the turbos on our Stealth TT upgraded with a more agressive
compressor wheel without machine work.

        I was able then to peg 20psi constantly instead of maybe banging on
it once on a cold morning on the stock turbos.

        Just a FYI *grin*