catalytic and muffler bypass
 

Give me some feedback on this mod I would like to do.
I want to put on a GT takeoff rear bumper on .
But without duels I will have an extra cutout .
I had a brainstorm .
If I put a dump on before the catalytic converter and ran the dump all the way out the back where the extra cutout is .
Will this give me any advantage at the track ?

Interesting idea, but can't work with the stock cats; they are way too close to the exhaust manifold, unless you do some extensive piping. Bypassing the cat converter wont buy you much time, if any.
Instead, put a dual setup under there and leave the cats in place. They aren't that restrictive until you start getting into F/I setups. And doing a dual setup will gain you a few hp and be easier than what you are thinking.

hmmmmmm did not think about that. Maybe I could move the catalytic converter back an couple of inches. Just enough to fit the Y in.
Or I could only bypass the muffler by putting a Y right before the muffler run it over to the cutout and just cap it off like an old school dump. that would be cheaper than a duel setup but it would still have the catalytic converter restriction .

Why don't you just put straight pipes in and be done with it. I don't see what you are trying to do besides break the law of emissions.

O I have straight pipes on the vette hehehe.

your not serious. right?

Just in case your serious . cap on street / uncap at track

But the gains vs work and money would be mininal at best.

another one of those poor boy mods. hahahah