I really dont want to run a cat but I have heard that it will smell horrible, is this true? its going in a 87 crx with a OBDO B16 swap, apexi N10 muffler. should I go with 2.25 or 2.5in pipe for the whole system? any good cheap hi flow cats? Im in New York so I dont have to worry about smog. any power loss or negative effects for the car from using a test pipe? I searched but everything was too broad.

Thanks in advance, Matt

 

...go test pipe...it'll give you the most efficient flow and the best performance out of your B16A...just my 2 cents

 

Some people would say go for test pipe, and others would say go with high flow. in my opinion i'd dyno both on the car, because i've heard stories of people getting more power with one of em. well, my 2 cents

 

i really dont think power is gona make a difference on a near stock motor. test pipe is a hell of a lot louder though. id go with a cat.

 

2.25 "piping w/ straight test pipe...

 

wont have any real differnce why dont you do mother nature a favor get a high flow

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ace$nyper &raquo;</TD></TR><TR><TD CLASS="quote">wont have any real differnce why dont you do mother nature a favor get a high flow

</TD></TR></TABLE>

Save the whales!

 

yeah, rite now im running am empty cat, i just holllowed it out , but it ratles, so plan on putting an ek cat which is little longer(with the 02hole pluged up). my empty cat did not smell , but did get loader.

 

Don't gut the cat... you never really get all the catalyst out and it can impede flow.

I had a test pipe and didn't like the sound, so I bought a CarSound (I think that's who makes it) high-flow cat and I like it a lot better. Plus it's 100% legal. That's just my $.02.

 

Oh yeah... go 2.25".

 

ill admit it wasnt the best idea

 

my exhaust with a gutted cat smells. and its completely gutted, theres no reason it should still be rattling inside, except the heatshields if theyre still there.

but it smells, i dont recommend it. just get a high flow cat.

 

Testpipe

Your emissions are a lot richer, no biggie! Other than that, your exhaust has a whole new sound..more aggressive!!!!!!!!!!! Make sure to go Omni-power.

I feel it's one of the best out there hands down!! http://www.kteller.com

They have the best price and amazing customer service!!!

 

hm. i got a hi flow cat off ebay (~$30) and it was essentially a test pipe.
straight-thru airflow, nothing to filter or impede the exhaust.
just like a little resonator.

but i'm sure the name brand hi flow cats actually do something......right?

 

NO CAT






ok now teh truth, go hi flow

 

straight pipe all the way to a nice QUIET muffler. :D

 

 

ur test pipe is to LOUD

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by supportRhondas &raquo;</TD></TR><TR><TD CLASS="quote">ur test pipe is to LOUD</TD></TR></TABLE>

They are only too loud if you have a crap exhaust

 

normally the exhaust will smell when your cat has gone out.. i have had a test pipe for a long time with no bad smells. i also have a carsound hiflow cat but it just makes the engine sound wimpy at high rpms. just feel like its holding the engine back.

there wont be a huge difference but i prefer the testpipe... hell ive seen stock good condition honda motors pass emissions testing with a testpipe.

 

Definatly use a Cat.

They sound shitty without the cat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88 Crx Si &raquo;</TD></TR><TR><TD CLASS="quote">Some people would say go for test pipe, and others would say go with high flow. in my opinion i'd dyno both on the car, because i've heard stories of people getting more power with one of em. well, my 2 cents</TD></TR></TABLE>

Who cares if you lose a few ponies between a test pipe and high flow cat because in the end not only would the high flow cat be better in terms of pollution but also doesnt give of the **** smell and sounds loud as hell.

 

testpipe and thermal classic/eg axle back. deepest sound until 6-8k rpm @WOT step back!

something i wont do is run open JDM 4-1 or downpipe for 2 weeks lol

 

hi-flow...a little back pressure never hurt
test... if you plan to go turbo