Apexi N1 with test pipe

[96TypeR]

i love the exhaust as long as ur not in the 3000-3500 rpm range then it hits the rediculess high pitch buzz sound i also have a test pipe on it....think that could be the problem or do all apexis do that??

 

[Melt]

its the test pipe ... my n1 doesnt do that

 

[mx524]

it has to be the test pipe...my buddy gutted his cat and his buzzes like hell too.

 

[newspeed]

Whats is the test pipe exactly?

 

[teggyls]

Is A Hollow Pipe In Place Of The Cat

 

[MoJoJoJo]

its the test pipe, i've owned 2 N1's in my life and neva get that ricer buzz

 

[Melt]

now that i think about it one of my boys has an n1 with test pipe on his g2 integra with jdm b16 and it is loud as fuck and has that buzz.

 

[nefesto]

i dont think a test pipe would make a buzz ONLY at a certain rpm. i have a test on my ls/vtec and apexi exhaust and its fine. now i did have a buzz at lower rpms (around 2500-3500) when i had some loose exhaust bolts. is everything tight? check it out

 

[96TypeR]

everything is tight but its so freakin annoyying.........im guessing a high flow cat would solve the problem ( any good makes reccommened??) its about 2800-3300 that the sound of death starts and ends

 

[nefesto]

this test pipe of yours, was it just a piece of hollow pipe with flanges or did it have a metal screen on the inside more like a resonator?

 

[cabezzzdb8]

Ive got a test pipe with NO resonator with apexi N1 can with custom piping and is loud but not that raspy sound that youre describing it just a low loud sound makes the car vibrate a little when stepping on it, maybe you got a piece of heatshield down there thats a little loose, that happened to me when they did my piping, it was very annoying at low rpm.

 

[96TypeR]

the car runs extremely smooth....only 3000 miles on everything. its a high pitch buzz ill just change the test pipe for a high flow cat

 

[209SpoonDC2]

I'll put $$$ on it that it's the test pipe. As soon as my friend put it on w/ his N1, it started getting the buzzing sound right around that RPM range. Sounds great when you hit VTEC.

 

[Melt]

bump

im about to get a dc 4-2-1 header prob this weekend and the guy offered me a 2.25" test pipe for a little extra ... i also got apexi n1full catback.

my question is am i going to start blowing o2 sensors or will i be cool ... cause if my o2 is coo then ill deff put the test pipe on

 

[1329itr00]

your CEL light will come on