Hello everyone so i have a muffler bypass currently on my car but its way to loud. I mean wayyyyy to loud. Been reading up on the Gundo hack and was wondering if i do this with my mufflers will it be as loud as my current bypass or will i lose some sound. I am willing to lose a little cause its way to loud after a week of having this bypass. Will the sound be better? Btw i have high flow fabspeed xpipe cats, and fabspeed headers.

 

Gundo hack makes it noticeably louder when on the gas, it is no way to loud by itself.


I intend to add a center muffler replacement/ bypass soon, it sounds like you must have bypassed your side mufflers, that is way to loud even by itself from what I have read

 

yes i bypassed my side mufflers as mine is a 2007 997s. I plan to do the gundo hack on my fabspeed mufflers. What do you guys think? or will it still sound the same as my current bypass?

 

This is my fister mod my 997.1 using 1.5" pipe to make the bypass on the mufflers.

With regards, Jonathan.

 

I did a Gundo Hack on my C4 and I had a choice between 1.5 inch and 2 inch pipe. I was told the two inch was pretty loud. I went with 1.5 and I'm very happy. Nice note on acceleration, but I don't notice any difference at cruising speed.

 

FISTER- not gundo, not bypass..do it clean, do it Fister!

 

I went with 2in on my gundo hack and it sounded like a beast. Loved it !

 

Nice. I plan to do this hack with my fabspeed mufflers. Hopefully sounds dope.