Re: Supertrapp exaust question-Toyota and Scirocco

["lerb" <lerb@redrose.net>]

So how do you tune your Exhaust to accommodate changes is modifications?
- -----Original Message-----
From: I.Mannix <mannix@secretignition.com>
To: <BADCO45@aol.com>; <toyota-mods@cyberauto.com>;
<old-celica-club@celicas.org>; <scirocco-L@scirocco.org>
Date: Monday, October 19, 1998 11:33 AM
Subject: Re: Supertrapp exaust question-Toyota and Scirocco


>At 10:48 AM 10/19/98 EDT, BADCO45@aol.com wrote:
>>Is anyone running a supertrapp on ay of their cars? I'm thinking of
putting
>>one on my '77 Celica Gt liftback, with a 20R. I will probably keep the
stock
>>manifold and resonator, it is 1 3/4" pipe. I would like to run 2" from
there
>>to a 2" core 18 1/2" long steel supertrapp(4" discs). I'd like to run one
on
>>my '81 Scirocco too. It has a lorwitz(sp)? 2" exaust with a euro GTI
>manifold.
>>I'll keep all that on it, and run 2" from that back. Are they as good as
they
>>look? I know some of you auto-x'ers are running them(mannix). Thanks.
>
>
>I use a Flowmaster on my car, and actually, I hate Supertrapps:).  Counnas
>has one on his Rabbit, I think some other VWs at the autocrosses have them.
> I use a Flowmaster on the GTI - 2" pipe from the header to a 3"
>inlet/outlet 2 chamber Flowmaster.  When I got this muffler(to replace my
>old, dented 2.25" Flowmaster), I had two choices - a 2.25 which would have
>fit OK, OR, a 3" that fits really well.  Laid the mufflers side by side,
>the 3" is the same muffler - baffles are the same, just the inlet is
>bigger.  OK.  Moved the power up a bit, but that's OK - the car feels good.
> IME, Supertrapps tend to resonate BADLY inside the car - rode in the
>Counnas Rabbit once, ok, loud, everything resonates, vibrates - no
>interior.  OK.  Rode in a 4 door Rabbit, full interior, seat up, sounded
>_exactly_ the same.  Huh.  I like Flowmasters.  They're loud OUTSIDE the
>car - inside, the Flowmaster is great.  The 3" is a smidge louder than the
>2.25, but that's OK.   Dynomax ultraflow/magnaflow/toughguyflow/whatever
>they call them are pretty good, too - quiet, if you're into that.  I sorta
>want to try a Borla Sportsman XR1 "bullet" muffler sometime.  Expensive
>experiment, though.  The Leistritz pipiing sucks.  DItch it.  Go to a good
>muffler shop(ask the C-springs racers), get some pipe bent up, put the
>muffler of your choice in.
>
>FWIW, the 77 DSP Truck has a Supertrapp - is that a 20R also? Probably does
>good things for power on that motor(whatever came in the 77 pickups), if he
>has it on the truck.
>
>I'll be in touch!
>
>Iain
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