I did a search and couldn't find anything about this, so please excuse me if this is a dumb question.

I have an IX MR and I happen to have a Perrin test pipe for the Evo VIII/IX. I was wondering:

A) If the Perrin test pipe will fit between my stock down pipe and exhaust?
B) If this would work, would this improve performance or just mess everything up?

Thanks, and sorry ahead of time if this doesn't make sense.

 

I have the same test pipe. It should fit between the stock components. And yes, anytime you remove a bottle neck in the exhaust flow you will experience gains. You will still need to get a tune however to fully realize the full potential of going catless

 

dont bother getting a tune on just adding a test pipe. waste of money imo

 

Ya, dont get me wrong. You can run all day with a test pipe without a tune. But to get the most out of it you need a tune. I wouldnt just install the test pipe either though. I would hit up the whole exhaust, to remove all the bottle necks.

 

Great! This is what I was thinking.

NEXT:

So I wouldnt be losing any power (either lo-end or hi-end) from just replacing my cat with a test pipe without getting a tune?

Do I use the stock gaskets on either side of my factory cat when installing my test pipe?

What size are pipes on the stock cat? They look a lot smaller than the Perrin test pipe...

Has anyone tried this before?

Thanks again!

 

I'm not going to buy a full exhaust yet, and I have this test pipe laying around so I just figured I would throw it on. Is it going to give me a few HP if I put this on in the mean time?

 

dont forget to get the O2 Simulator if u dont want to see a CEL

 

I lost the O2 simulator that came with the Perrin pipe, but from what I've read, spark plug anti-foulers are the best to use for the IX...will I need to do any modifications? How does the fouler attach to the pipe, and how does the O2 sensor connect to the fouler?

Sorry for asking so many questions but thanks for the replies.

 

Ive done this before with a 3" resonated test-pipe. I used 3" gaskets between the downpipe and catback exhaust.

There will be a slight exhaust leaks because the stock downpipe and exhaust are only 2.5inches.

 

Search, theres a how-to to making a cel fix out of anti foulers. Thats how I made mines.

 

yes , you will feel an increase in power. not the maximum as Apex Racer has stated you would get with a tune

 

Will I definately have an exhaust leak using the stock setup with the Perrin cat delete pipe?

 

if it does, it will be minimal and nothing to worry about

 

^^^^^^^^^
I re-used the stock gaskets and put some high heat sealant on them, then let it set. I think the stock pipes are around 2.25-2.5 in the test pipe is a full 3 in.

You will be fine running this. An after market cat back with 3in piping and a 3 in downpipe would help you maximize the potential of going catless. but as I said earlier any time you remove a bottleneck you will improve power potential, but in this case you are esentially opening the exhaust up then shutting it back down due to smaller piping on the catback. But the cat converter itself has so moch restrictive material in it that when you remove it you will defineatly notice a difference.

Ideally exhaust modification should go from the the outlet to the source, ie.. cat back, then cat, then down pipe.

Hope this helps

 

It helps a lot, thank you very much.