We offer both 2.5" and 3" X-flow systems. I have switched back and forth from 3" to 2.5" several times during testing sessions and can not detect any difference at all with K24/18G turbos...cat cell count being equal.

However, the difference between 100 and 200 cell cats is noticable. The car feels fresher, throttle response is improved and the turbos spool quicker with 100 cell cats - again, a very noticeable upgrade when going to 100 cell cats.

 

I went from a GT2 exhaust w/ 100 cel cats to Markski's set up with 4 mufflers and no cats (for the texas mile) and immediately saw a slight difference in spool time but a big difference in SOUND.

But it's not what you think....Marek's is actually a bit quieter!

It's definitely more exotic sounding but overall much less harsh than the GT2. I'm not sure if the GT2 was 2.5" or 2 7/8" but it was a bit on the obnoxious side .

I can still set off alarms in the parking garage, but it purrs for the most part. In fact I'm thinking of sending back to Mark and have him pull two of the mufflers....

Overall I'm really happy with the sound and performance and drone is nil over 2500 rpm.

 

Are you in Houston?
I would love to hear Markski's exhaust in person

 

Lee Priestski LOL

 

The same thoughts here !!! I've never sent him an email and waited more than 2-3 hours ... So i'm asking my self does this guy sleep !
Very helpful and respectful guy ..

I dont think u can go wrong with a product and/or services that he offers.

+1 for 911tuning

 

Markski... Which of
Your exhaust do u recommend for a tiptronic with 5-600 rwhp I prefer a louder aggressive sound but minimal drone. I had fabspeed cat bypass on C2 and loved it. I know speedtech recommends their 2.5 xflow. Any comments welcome

 

Is this a project or the car has already 5-600rwhp?

 

full 3 inch with the custom mufflers, and no cats.

 

This is the plan, it will be 24/18 based

 

I have a few clinets running same set up.. and since I make them per order I can play with the sound by changing ODs, muffler components, etc etc

 

No problem. PM sent.

 

And the gearbox? They say 500-500whp is the maximum power that the tip can handle but watch the torque too!

 

No one is running the 3" rpi exhaust?

 

Rpi is LOUD, I had one. And it's super droney in the 2-3k range. Not for the faint at heart at least in my opinion. But it sounded super mean at wot and had a nice burble, it was 3 inch straight thru design. Felt like it made power(butt dyno) but it kind of took the fun out of driving the car as it was too loud and you couldn't drive around in the 2-3 k range as the drone would rattle your teeth lose. Definitely not wife approved.