Njdeiss2

If I were to swap my cat out for a test pipe, will it trigger a CEL? ATM, cat forward is still stock (i.e. stock y-pipe and headers/pre cats).

TriniSpeC

No you won't get one

Njdeiss2

You running one yourself? Just wanna be sure the 4th gen test pipes out there or the 240sx's flanges line up, don't wanna cut the 5th gen ones that are too long.

Njdeiss2

Any suggestions on test pipes? Make/model, resonated/non, or if that even makes a notable enough difference? (The resonated vs non I mean)

jr schultz

I Bought an ebay 3 inch test pipe for a 240SX.
Perfect fit.

Njdeiss2

What was the year/model range?

Scottwax

iTrader: (8)

Had a non-resonated Warpspeed test pipe on my 4AT 5.5 gen. No change in sound to speak off, still very quiet. Zero rasp, no SES light.

Njdeiss2

Anybody out there running the 4th gen megan test pipe? Perfect fit? As I understand the 5th gen one by megan is too long and would have to be cut, but people say the 4th gen fits perfectly. Just want to be sure before I pull the trigger.

TriniSpeC

I have a Megan test pipe but it's a bit long. The correct one to get is a 240sx test pipe or a fast cat

NmexMAX

iTrader: (22)

Or ISIS, although a bit overpriced for what it actually is.

DjHackStyle

you didnt specify which car, 5th gen 3.0 or 5.5th gen 3.5

which year and engine size is needed to get the perfect fit test pipe for the 240sx on a 5.5 gen?

Njdeiss2

Whoops, it's 5.5gen 3.5L 4AT

NmexMAX

iTrader: (22)

I've used the 4th gen tst pipe on my 5.5 gen, they are backward compatible. For best fitment, the overall length should be 12".

Njdeiss2

So I've heard, megan only has the length of the 5th gen one on their website, so was looking to make sure the 4th gen fit, thanks.

NmexMAX

iTrader: (22)

Not sure if and when they will fix it but it's annoying.

I've had 3 different test pipes and a FastCat, all of them fit. Before all that I had a Megan, and it didn't fit.

Njdeiss2

What were the brands of the 3 test pipes that fit? Were any "resonated"?

NmexMAX

iTrader: (22)

One was LSS exhaust, I believe. Sold it to a 4th gen member and it fit both mine and his vehicles fine.

Got the ISIS 3" for a 240SX, looks resonated but it really isn't, it also fit fine.

The other was a budget I believe, old school, with the rotatable flanges, and it too fit just fine.

And of course as we all know the fastcat fits just fine.

If you're looking to quiet things down some, depending on your exhaust set-up, a small 12" resonated TP isn't going to do the job.

Fakie J Farkerton

iTrader: (51)

ISIS fits perfect.
Thanks again!

NmexMAX

iTrader: (22)

Glad to hear

Zach-R

iTrader: (3)

Megan test pipe is too long. 4th or 5th gen doesnt matter. They are interchangeable. Im running cheap ebay headers, test pipe, and turbo muffler. Car sounds great i get compliments all the time. The test pipe seemed to change the pitch but didnt seem any louder.

Njdeiss2

Thanks for all the info guys. Just ordered an ISIS, will check back once it's on for an update.

NismoAce

iTrader: (6)

I own a 5th gen max and purchased a 5th gen max megan test pipe and it is too long lol. looking to get a fastcat

Njdeiss2

ISIS pipe is on and fit perfectly.

Fakie J Farkerton

iTrader: (51)

Notice any butt dyno or sound changes?

Njdeiss2

Well, being that my original 12 year old cat was replaced with a straight pipe , the flow is certainly better and the butt dyno feels a slight difference, though it could just be placebo. As for sound, it is just a hair louder, but that's it. Seems to keep the growl more as the rpm's keep climbing, as opposed to before when the exhaust got noticeably quieter as they went up. I'm also still running stock exhaust mani's and y-pipe so the above mentioned results are all to be expected. (2.5" sr*s cat-back)

Fakie J Farkerton

iTrader: (51)

^ you got a 3" test pipe connected to 2.5" catback?

Njdeiss2

Indeed, upgrading to 3" eventually, figured I'd get a head start on the cheapest component. 3" id for a length of ~12" down to 2.5" really shouldn't have any ill effects, the free flow should outweigh the small amount of turbulent air.

Fakie J Farkerton

iTrader: (51)

As long as you know your creating turbulence and need to match it eventually to get that hp.

Njdeiss2

Yup, all in good time.

AWeb80

how about the pre cats? Can those be gutted w/o a CEL?

If a CEL will present itself, what is the easiest way to shut it off so it won't appear?

Mules5555

I have gutted cats off the manifolds. 2 1/2 back to a dual inlet single outlet magnaflow resonator back to a Flowmaster with a tip. All 2 1/2 pipe. Got rid of the factory y pipe and just ran duals to the resonator. And no codes have been thrown and have had it this way for 40k miles plus.

CauzinDrama

iTrader: (13)

Pics?