This is Marek's 2.75in with 100 cell cats on my previous 997TT.

http://www.youtube.com/watch?v=Mmbdz...layer_embedded

 

Hey Mark,Is there alot of sound and performance difference with a 2.75,100 cat system with the race mufflers verses the street mufflers.I think that 2.75 size would do me and my set-up.......Thanks......

 

Very nice exhaust systems Mark! can you set up the 100 cats and hi flow muffler such that no check engene light, cel, or codes are thrown?

 

John,
fo you I suggest the 3' piping but with "street" mufflers.... the sound is considerably better because we make the mufflers from scratch. I would use 2.50" ID muffler though.... this gives me more packing material space.... this is the perfect combo between sound and performance.,.. the 3" ID may be too aggressive for you....

something like this...



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or brushed natural look...



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The best way to do that is via the ECU.. that is what most clients with 100 cell cat exhausts do.... thus flash the car.. request the post o2s to be off... and your done... this is easy.. but you need a flash....
I had one client run on our 100s without any problems... I do not promise it will be ok and for how long.... in order to do that we would need to spend $2000 on cats alone.... thus the price of the exhaust would go up accordingly.... its a give and take situation... I have seen some 100s work for 5K miles without a problem....
mark

 

thanks Mark...clear and honest advice as always ...if the car has a tune on it already, which performance setup exhaust setup would you suggest to get good free flow charecteristics as well as performance without throwing codes, check engine, cel etc...?

 

I think a 100 cell cat with the 3" piping and 2.5"ID with the street custom made mufflers... best sound....
same one I advised to John...
you can go the cheaper route and save $500 using our pre made race mufflers.... most clients like them too...
best
markski
here is how we make it....

 

Hey Mark, I don't see any pictures of the dual tips like you're making for me. All the hype will undoubtedly be worth the wait for me. All that you've promised me has been somewhat underrated by you. My car is a beast compared to even what we've talked about......kuddos to you pal

 

Tips came in.

this is Ben's..





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Looks awsome Mark......thanks

 

Markski, can you make my mini-van sound like the Porsche? This winter is driving me crazy!!!! lol

 

i hate this weather...

 

now you decide to come out with those tips

 

Mark, what kind of exhaust do you have for a convertible? I dont want too much drone in the cabin.

 

Unfortunately my transmission went out the same day I got the exhaust in the mail...so i have yet to install it

I will post up clips once its installed

-Ben