Full exhaust needs test pipe
#1
Full exhaust needs test pipe
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.
#6
*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...
Last edited by steezmuffin686; 04-23-2012 at 05:01 PM.
#9
well, we all have them. Now you know for next time.
#11
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.
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.
#14
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......
#18
& got any videos?
Last edited by Venix; 10-18-2012 at 12:50 AM.
#19
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
#20
#24
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
#25
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
#26
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
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...
#27
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
#28
3rd, 4th,& 5th Gen Cats are roughly 12" in length.....where you got 18" from I don't know......
#29
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.
#31
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
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.
#32
#33
Originally Posted by 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.
#34
#36
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....
#39
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!
Last edited by CMax03; 10-19-2012 at 09:46 AM.
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