for those of you who have a cattman Y-pipe.

I read the following on the Cattman website:

" The 3" Cattman Y-pipe requires a 3" catback exhaust system and is not designed to work with smaller diameter stock or aftermarket exhaust systems. Because there is no production 3" exhaust available, a custom solution is required. Customers are strongly advised to design the 3" custom exhaust from the 3" Y-pipe back to ensure proper fit and clearance."

So basically, they're saying you have to custom fit their Y-pipe onto your 5th gen max, right?

Is this the case for the Stillen Y-pipe as well? How much is the Stillen Y-pipe anyway?

Thanks guys

 

no custom fitting, the 3" is for the cat-back. It bolts up just fine to the manifold but you need 3" for the rest. This needs to be custom done. (3" bpipe and muffler)

Stillen does not make a 3" y pipe. The stillen pipe is about $350

 

do you know what the difference is between the two y-pipes?

 

Aren't the 3" Cattman y-pipe's only for those with an SC?...or can NEone use them too?

I wouldn't think so cuz there wouldn't be enough back pressure...

 

The 3" Y's are for forced induction cars. While you can drive around with it NA, I would imagine that it would suck power away from you. The correct size for a 3.0L engine is 2.5".

 

3" pipes are for boosted applications like SC or NOS. It would decrease HP in a NA car. Bigger is not always better. Best NA is between 2 and 2.5"

The stillen is cheaper because of the material it is made of. Cattman is stainless and won't rust as easily. There are varying opinions on the quality of each pipe dependin on who you ask. I just ordered a cattman.

 

so Cattman also makes a 2.5" y-pipe as well I assume.....

 

Yup...the 2.5" y-pipe info is right above the 3" info. Check the site again.

 

I would stick with 2.5" exhaust unless you are running a lot of boost....