steezmuffin686

This is more of a rant post, maybe some informational quality. but whoever decides to do a full exhaust as well as y pipe let me assure you, you will need to either re-use the cat (as i did) or have a 12 inch test pipe handy....needless to say after struggling with all those rusty bolts, stubborn o2 sensors and countless rust particles in my eye, theres no feeling like putting the catback up to where its supposed to connect to the y pipe and laying witness to a 12 inch gap between the 2. im sorry if this info can be found searching but all i do is lurk in the search function...this might be my first official post. but either way... rant switch off.

036mtmax

iTrader: (11)

99SE-L5SPEED

im installing my this weekend but im useing a magnaflow high air flow cat and not useing my old one or a test pipe for the price of a test pipe just put an ettra 50 bucks and get a high flow cat

EmergesUnscathed

It's called cat-back for a reason, bud. It's meant to connect to the catalyst, not the y pipe.

BenL

steezmuffin686

*puts on flame suit* thank you sir...considering i did a guage swap ( guages not cluster ) ks, fuel filter, drive belt, endlinks, and full exhaust in one day utilizing the cat that was rusted beyond recognition..i did good. just a dumbass moment's all...

99SE-L5SPEED

the y pipe has two cats as well

steezmuffin686

good thing i got the stock one at work, ima cut em off n sell em.

EmergesUnscathed

well, we all have them. Now you know for next time.

steezmuffin686

just put my new strut tower bar on and, i do rather enjoy the more-so taught suspension..now to get my ball joints and s-tech springs she'll be sittin nice.

Venix

Are u sure the gap from b-pipe to y-pipe is 12"? All the test pipes on ebay say 18" long.

And you should have went with the Z32 fuel filter, i just changed mine today after 150k miles. It idles so smooth and they say it lasts longer.

AlexxSCM

iTrader: (2)

You wanted to connect the ypipe to catback???? Sell your maxima.

Put your old cat back on. Or not... Then you will be stupid loud

VQ'rInWLA

iTrader: (83)

Essentially mine is hooked up straight to y. But I piped it correctly so although loud, its clean.

Rods03Max619

iTrader: (5)

Yes it is 12'', 18'' HOLY ****, jack up your car and measure for yourself if you dont trust the info, maybe 12.5'' at most but pretty sure its 12......

Venix

Yours is a 99 cali? Do you know how big the gap is?

VQ'rInWLA

iTrader: (83)

Nope never got OEM specs since being an exhaust *****, everything is custom.

ShocknAwe

iTrader: (3)

Venix

Lol, you do have the perfect exhaust, V2's and 3" pipe. Me personally i like my Stillen rear section. But does your exhaust out-sound your intake since you have no cats? I prefer the CAI growl and may just get a new cat if its too loud, or a resonator.

& got any videos?

renots

iTrader: (5)

I can answer this, yes his exhaust is louder then his cai. An vids to his exhaust are in his sig. Click the link an enjoy

Venix

Thanks. Im gonna use a test pipe because it has a 2.25" inlet and 2.5" outlet, and weld a 2.5" magnaflow cat in the b-pipe

AlexxSCM

iTrader: (2)

Rice sound ftw

Venix

Lol me? Or the OP? Because my Stillen rear section kills any rice sound in its tracks.

ShocknAwe

iTrader: (3)

unequal length Cattman Y-pipe FTW over here. Gotta love some rasp, honestly tired of trying to eliminate it. Ill put on the 3" and thats it

Venix

OBX V1's -> test pipe increaser (2.25" inlet, 2.5" outlet) -> welded to 2.5" cat -> welded to 2.5" resonator -> welded to the rest of the MES 2.5" b-pipe -> Stillen rear section

ShocknAwe

iTrader: (3)

v1's? no rasp? Whatchu talkin bout willis? I subscribe to the opposite theory where it is best for perofrmance to increase pipe diameter as you go back. My 2.25" cattman->2.25" cat->2.25" resonator-> soon to be 3" MES b-pipe section and cant decide if I want to leave the 2.25" muffler or go straight through

Venix

The V1's have a small diameter at the collector to the end, its a little less than 2.25". The test pipe is for the Max and has a 2.25" inlet & 2.5" outlet. So the exhaust will be 2.25" and will increase to 2.5" at the test pipe.

I dont want it to be too loud so i will weld a cat & resonator into the b-pipe where its straight, right after the test pipe...

ShocknAwe

iTrader: (3)

Opposite theory is what Nissan uses anyways, it works. Best to have the restriction early on and then open up as it goes back. Some say no restriction is best but I tend to think this is the best way for velocity's sake. Especially pre-cat because you need to keep the velocity up going into the cat

CMax03

iTrader: (3)

3rd, 4th,& 5th Gen Cats are roughly 12" in length.....where you got 18" from I don't know......

4th gen maxi

iTrader: (1)

i got a test pipe for you, exact size as cat and brand new from racing sports'

VQ'rInWLA

iTrader: (83)

Yeah it "outsounds" the CAI. Well most free flowing 3" catbacks would. And as said above, video is in my sig.

Venix

Yea i know its better to have the restriction as far up front as possible, but my setup the cat would only be like 12 inches further back, with the test pipe in the spot where the OEM cat was. I was thinking just weld the 3 together, so the b-pipe and test pipe are 1 piece.

test pipe-cat-resonator-rest of bpipe

The reason I want the test pipe first is because of it's 2.25" inlet and 2.5" outlet. I can bolt the y-pipe's 2.25" outlet to the test pipe's 2.25" inlet, then the rest of the exhaust opens up to 2.5". The only restriction is the cat, but its a pretty small one, and a hi-flow.

Venix

Because all the test pipes on ebay say 18", but its not an issue anymore, because i decided to integrate the test pipe and b-pipe as 1 piece.

Trans4ma

For 97-99 that's probably true. 95/96 have longer B pipe. I installed a Megan cat back for 97-99 which came with short S pipe to bridge the gap.

Venix

Yea just found out why... cat (12") + s-pipe (6") = 18"

Venix

CMax03

iTrader: (3)

1 piece exhaust systems are for the birds..........Buy some flanges and 12" of tubing and make a testpipe.....The reason yours is so loud is that you're using 3.5" resonators that maybe only 14" long....I see no braces under the car why not invest in a Magnaflow (12649) 6" round, 18" long muffler and use it as a resonator...I just built a "New Resonator Section" for my 3" Cattman Catback and it's quieter....

maxed_out_99

i just installed a megan test pipe and its not raspy at all it sounds great.
it all depends on the muffler

VQ'rInWLA

iTrader: (83)

All depends on how you pipe and pair the cat, resonator(s) and muffler

CMax03

iTrader: (3)

You will have enough MES tubing to mate the MES directly to your cat.....I see why you had additional tubing, that's not a testpipe that's the s-tube eliminator.....which you won't need with this MES tubing kit....You should be able to get the next size up resonator length...I 'm using a 22" long Magnaflow 10436 and a 12576 there plenty of mufflers to choice from one of these days I'll design a 100% Vibrant resontor/muffler catback just to see how it sounds. I've deigned/utilized Magnaflow mufflers on 4 cars and They're awesome..... one of my systems is over 10 yrs and still sounding good!