2012ISF

Will i lose back pressure and be slower!!!

VtotheJ

iTrader: (2)

No mufflers/cats = less restriction = more air flow = less back pressure
No mufflers/cats = weight reduction = faster

vmatheboss

iTrader: (1)

so are you only running the straight pipe to one of the muffler tips? the other one is just empty behind there?

VtotheJ

iTrader: (2)

Yes, but you can barely see it. As you know the muffler tips aren't connected to the exhaust but on cold start you can see the smoke coming from the tips because the pipes sit right behind them.

Gearbangin

iTrader: (7)

Heard those sounds sick. Im looking for interior window up start, cruise, full throttle etc.

vmatheboss

iTrader: (1)

ah ok. yea i see the smoke on the cold start for sure. i got guys that for some reason always look at the tips and say, "wow you got 4!" then they start looking into it to make sure its not only a cosmetic thing where theres only 2 tips but split into 4 lol.

is there another way to cut it rather then removing the muffler part and still gain similar sounds?.

VtotheJ

iTrader: (2)

You could probably keep the mufflers and remove the resonator and secondary cats...that might work. But I've heard it sounds the best when the mufflers are removed.

AussieISF

That 2k RPM drone is bloody annoying. I've got a Borla catback myself, after adding 2 venturis and applying dynamat behind the rear seats, it's helped a lot but not completely eliminated it. Is there an aftermarket system out there that doesn't have the dreaded 2k drone? I'm quite sensitive to the sound.

jkeifer3

Interesting you should mention this. On one of my Corvettes, the 1999, I installed a high flow exhaust system and actually lost some power. I could only tell by the seat-of-the-pants feeling because I didn't put the car on a dyno or anything. Still, the effect was noticeable.

So, from what I have experienced, a loss of some back puressure can indeed lead to less power.

caymandive

iTrader: (2)

The F will gain some power no matter what you do with the exhaust. There are gains from removing mufflers, secondary cats and primary cats. Obviously the best approach and one that will yield even more power for those budget minded is to just get a Borla true dual system that can be had for under $1000 new and even better deals on used.

Hacking the OEM exhaust has its expense and downfalls.

VtotheJ

iTrader: (2)

Here's a clip for Gearbangin and other skeptics
Various in-car noises of the exhaust mod......I tried covering all of them. Hope this helps those that want to do the same thing.

vmatheboss

iTrader: (1)

thanks. im still debating...might go towards borla lol

Gearbangin

iTrader: (7)

Wow sounds good not too loud at start up and cruise. Decisions Decisions. You may have just saved me a 1,000. Thanks again!!

Damage

Curious, but how come I don't hear anyone using electric exhaust cutouts?

VtotheJ

iTrader: (2)

People have before and the electric motors just burn out