Stoddard's new muffler

356 Porsche-related discussions and questions.
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Richard Holler
356 Fan
Posts: 101
Joined: Sat Aug 04, 2018 2:04 pm
Tag: 1963 356 S T6 coupe
Location: Chicago, Illinois

Re: Stoddard's new muffler

#16 Post by Richard Holler »

wow, glad I went with the GDP TT then, though I think the magnaflow sounds cool and is well engineered.

this is pretty typical of magnaflow crossover designs though, where you lose low end torque for more top end flow. the problem is stock 356 pushrods don't really have much top end imho compared to say a more modern motor.
1963 356 S T6 Karmann Coupe (stock engine)
Front disc brake conversion
GDP Dual Exhaust
Momo Classic steering wheel
SMD headlights
CUlayer LED rear tails
Superleicht spec (aka missing V brace and copious amounts of Bondo)

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Greg Carter
356 Fan
Posts: 159
Joined: Fri Apr 09, 2010 8:33 pm

Re: Stoddard's new muffler

#17 Post by Greg Carter »

Does anybody have any new videos of this system installed on their 356?

I’m curious if it will clear a PreMat full flow oil filter setup as asked earlier. I’d also liked to know if anyone has compared this muffler to a stock muffler on a dyno.

Greg

Edwin Ek
356 Fan
Posts: 1898
Joined: Sat Jun 21, 2008 11:16 am
Location: Santa Monica, CA

Re: Stoddard's new muffler

#18 Post by Edwin Ek »

What is the weight difference?
#6386

Jeffrey Leeds
356 Fan
Posts: 1280
Joined: Sun Apr 20, 2008 4:57 pm
Location: Northeastern MA

Re: Stoddard's new muffler

#19 Post by Jeffrey Leeds »

At the time I did my dyno comparison (see above) I also weighted the two tested mufflers as well as my original Leistritz which I've kept on the shelf during these tests. To recap the three:

GDP TP = 18.8 lbs.

Leistritz = 21.7 lbs.

Stoddard = 23.1 lbs.

BUT - the Leistritz weight is just the muffler and does not have S pipes attached. (it is net of the S pipes) so it likely will be pretty close to Stoddard all in.
< Jeff >

Registry Member Since 1978
1963 356B T-6 Super 90 Coupe
2009 997.2 Carrera S
2015 958 Cayenne diesel-1 & 2015 958 Cayenne diesel-2

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