Gutting out the stock cats

[tennisfreak]

This is pretty interesting. Wonder what everyone will say if the stock parts can put numbers up close to aftermarket parts.

[86-tundra]

Originally Posted by NickFRS

A tree hugger in texas? Didn't know you guys had trees.

[1086]

It is going to get suuuuuper loud

[R2]

Did you happen to grab a picture of the inside of the resonator and the cat? I'm really curious what that resonator looks like inside.

Originally Posted by NickFRS

Cousin just finished it up. i'll get better photos of the gutted header when i pick it up

[NickFRS]

Originally Posted by ML

Do you get a cel from the header now? That's the only reason I'm hesitant about gutting it.

Putting it on next weekend but i'll be running a o2 spacer so there should be no CEL.

Originally Posted by R2

Did you happen to grab a picture of the inside of the resonator and the cat? I'm really curious what that resonator looks like inside.

I can do that for you.

Originally Posted by tennisfreak

This is pretty interesting. Wonder what everyone will say if the stock parts can put numbers up close to aftermarket parts.

Don't quote me but it will prob be similar. If you look at most AM applications most headers don't run a cat. That alone will give you gains. For the FP it's not a 2.5. So OBV it's not going to make the power of a 2.5 FP. BUT if we are talking about VS stock? Yes these will deff make more power. The power shouldn't be really to much lower then my last set up. We shall see.

[NickFRS]

as promised more photo's. Just picked everything up. Should all be bolted up by Sunday.

Also got two cans of high temp paint to do the ENTIRE exhaust...




THe light in my garage died... so pictures kinda suck... Was using a iphone flashlight n another iphone for photo's....

Originally Posted by R2

Did you happen to grab a picture of the inside of the resonator and the cat? I'm really curious what that resonator looks like inside.

Forgot to grab the stock frontpipe cat + resonator.. next time I see him i'll pick em up.

[Anorexic 86]

In for dyno results...

I remember reading about Perrin doing this but they replaced the header cat with a straight pipe like you did on the front pipe. Can't find that thread at the moment.

Also... won't that inner lip cause some flow issues? Maybe grind or pry it out?

This one...

[ML]

I actually gutted my header last Sunday, and I'm running a uni chip. I could tell a instant difference. No cel, but I think that was because of the chip. Torque dip feels gone, and it's not really that much louder.

[TTGT]

Sound clip?

[ML]

Originally Posted by TTGT

Sound clip?

[ame]http://youtu.be/g2OdiqnyMK8[/ame]

[TTGT]

Doesn't sound as bad as I thought it would have! So u have no muffler just straight single tailpipe?

[ML]

Originally Posted by TTGT

Doesn't sound as bad as I thought it would have! So u have no muffler just straight single tailpipe?

Thats right

[troek]

Originally Posted by Anorexic 86

In for dyno results...

I remember reading about Perrin doing this but they replaced the header cat with a straight pipe like you did on the front pipe. Can't find that thread at the moment.

http://blog.perrinperformance.com/br...n-and-proving/

[cf6mech]

Originally Posted by Poodles

Never known a cat to not use a rare metal. The ones that don't release other toxins, hence the reason they're not used...

Also, call me a tree hugger or whatever, but removing cats is dumb. The only valid reason to removing them is because you run leaded race gas.

Or it eats itself up in my case and gets sucked into turbo read $$$$$,...now running catless and the emission smell is starting to bug me,.....it really stinks for DD use with windows down .