apexi dual n1 exhaust
09-03-07, 06:21 PM
#1
Senior Member
Thread Starter
Join Date: Aug 2005
Location: San Francisco
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
apexi dual n1 exhaust
so i was reading the racing beat tii exhaust a couple of topics down, and i was wondering about the apexi dual n1. since racing beat claims that their tii exhaust has a 59 hp performance gain. about what performance gain will the n1 yields? i cant find anywhere that says. also i dont know if the apexi dual n1 requires any kind of fuel cut defender.
kinda off topic, but again i was reading about bov on another topic. would it be necessary or beneficial to install a bov on a stock turbo?
kinda off topic, but again i was reading about bov on another topic. would it be necessary or beneficial to install a bov on a stock turbo?
09-03-07, 06:33 PM
#2
that power increase from racing beat is if you get there whole exhaust system from the turbo back with no cats. and with that exaust system you do need the fuel cut defenser contector. the apexi duals is only the cat back system which is just the y pipe with the mufflers. with the apexi you would have to do a custom or another companys down pipe and mide pipe to elimenate the cats. the turbo 2 comes with a stock bov. you cant hear it cause it blows back into the intake. an after market one wouldnt hurt.
09-03-07, 08:31 PM
#5
Insane Burning Diarrhea
Join Date: Apr 2005
Location: Noo Yawk City / San Diego
Posts: 1,796
Likes: 0
Received 0 Likes
on
0 Posts
Many think the N1 sounds raspy and loud like a Honda. I do also, i had a N1 and i ditched that.... Very light and has a nice flow though 
.
.
09-03-07, 09:56 PM
#8
**
Join Date: Mar 2005
Location: Bay Area, CA
Posts: 767
Likes: 0
Received 0 Likes
on
0 Posts
Same. I ditched my single N1 in favor for Racing Beat. Wouldn't go back. It was just too annoyingly loud with the Bonez Cat and it had a bad drone on the highway at 3K RPM .
09-03-07, 10:34 PM
#9
Blazin' 87 N/A
Join Date: Oct 2005
Location: Corning,NY
Posts: 281
Likes: 0
Received 0 Likes
on
0 Posts
i have driven accross the country 2 times with the N1 Dual. it was a little annoying and had a bit of a drone but i love my exhaust. i get compliments on it all the time. i just wish i had taken it to a shop and put it on properly the fit for me was ok but with a little tweeking it fits and sounds great!! this is how it looks on my car:
09-03-07, 11:40 PM
#12
Blazin' 87 N/A
Join Date: Oct 2005
Location: Corning,NY
Posts: 281
Likes: 0
Received 0 Likes
on
0 Posts
i get that alot. not the honda boy exhaust thing but the damn comment. i used to be in the army and i was an artillery man so every one that knows me and my car calls my exhaust my cannons
09-03-07, 11:57 PM
#14
Blazin' 87 N/A
Join Date: Oct 2005
Location: Corning,NY
Posts: 281
Likes: 0
Received 0 Likes
on
0 Posts
i have been told that on a t2 its about 10-12 whp and on an n/a like 5-6. i have never had my car dynoed that is just what i was told by the company i bought my exhaust from. i am sure that with a straight pipe and a dp on a t2 you will get more.
09-04-07, 12:02 AM
#15
Senior Member
Thread Starter
Join Date: Aug 2005
Location: San Francisco
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
hmm... thats considerably less than the racing beat one.... and according to farberio, i dont need a downpipe....
09-04-07, 12:31 AM
#17
Rotorhead
Join Date: Feb 2001
Location: Charlottesville, Virginia, USA
Posts: 9,136
Likes: 0
Received 39 Likes
on
33 Posts
Probably the same as the Racing Beat or less. Racing Beat does a lot of research. It's not likely that you could randomly piece together an exhaust system that would perform better than theirs.
Any good high-flow exhaust on a TII will require a fuel cut defenser, piggyback fuel computer, or standalone EMS. This is because the turbo will boost higher than stock due to the decreased exhaust restriction, and the stock ECU will go into fuel cut mode as an anti-overboost measure if the defenser is not installed. If you use a fuel cut defenser, your stock boost gauge will not read correctly, so you may want to buy an aftermarket boost gauge. Also, the 87-88 TII tends to boost creep when the exhaust is modified, so porting the wastegate may also be required. Didn't expect to buy that much stuff, did you? 
No
They call my car "the grapefruit launcher". Mine has 2 each N1's on a custom exhaust, not a "Dual N1" catback. It looks pretty much like yours but the mufflers don't extend as much from the bumper.
They call my car "the grapefruit launcher". Mine has 2 each N1's on a custom exhaust, not a "Dual N1" catback. It looks pretty much like yours but the mufflers don't extend as much from the bumper.
09-04-07, 12:38 AM
#18
Senior Member
Thread Starter
Join Date: Aug 2005
Location: San Francisco
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
Any good high-flow exhaust on a TII will require a fuel cut defenser, piggyback fuel computer, or standalone EMS. This is because the turbo will boost higher than stock due to the decreased exhaust restriction, and the stock ECU will go into fuel cut mode as an anti-overboost measure if the defenser is not installed. If you use a fuel cut defenser, your stock boost gauge will not read correctly, so you may want to buy an aftermarket boost gauge. Also, the 87-88 TII tends to boost creep when the exhaust is modified, so porting the wastegate may also be required. Didn't expect to buy that much stuff, did you?
also when i got my engine ported, i got the wastegate ported as well.
09-04-07, 12:55 AM
#19
**
Join Date: Mar 2005
Location: Bay Area, CA
Posts: 767
Likes: 0
Received 0 Likes
on
0 Posts
Well ya, the N1s are just a catback. You can't compare a catbacks gains to the gains of a 3" turbo back Racing Beat exhaust. The Racing Beat gets most of its 59HP increase by the boost increase created by running a 3" cat less exhaust. Get a Racing Beat downpipe and pre-silencer to go with the N1 and the gains will probably be the same, but your ears will go def and the cops will be all over your ***, especially in the bay area.
09-04-07, 02:16 AM
#20
The N1 duals is 65mm @ the y-pipe and its just catback which only yield from 5-12hp at most like every other catback. RB REV TII turbo back is a turbo back which includes the dp , resonator, the y-pipe, and the muffler. RB uses 3" dp to 3" resonator to a 3" inlet @ the Y and split into two 2.35" piping to a 2.5-3" tip.
To do that with n1, you get a bonez 2.5" dp and midpipe, either to a 2.5" highflow cat or a 2.5" test pipe to the n1.
remember 65mm is roughly about 2.5"
To do that with n1, you get a bonez 2.5" dp and midpipe, either to a 2.5" highflow cat or a 2.5" test pipe to the n1.
remember 65mm is roughly about 2.5"
09-04-07, 02:54 AM
#21
Senior Member
Thread Starter
Join Date: Aug 2005
Location: San Francisco
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
The N1 duals is 65mm @ the y-pipe and its just catback which only yield from 5-12hp at most like every other catback. RB REV TII turbo back is a turbo back which includes the dp , resonator, the y-pipe, and the muffler. RB uses 3" dp to 3" resonator to a 3" inlet @ the Y and split into two 2.35" piping to a 2.5-3" tip.
To do that with n1, you get a bonez 2.5" dp and midpipe, either to a 2.5" highflow cat or a 2.5" test pipe to the n1.
remember 65mm is roughly about 2.5"
To do that with n1, you get a bonez 2.5" dp and midpipe, either to a 2.5" highflow cat or a 2.5" test pipe to the n1.
remember 65mm is roughly about 2.5"
damn i kinda regret ordering the apexi n1.
so as of now, can i use the 3" cat and get the racing beat rev TII 3" downpipe?
http://racingbeat.com/resultset.asp?partnumber=16425D
Last edited by xUnKnOwNx; 09-04-07 at 03:09 AM.
09-04-07, 08:25 AM
#22
Full Member
Join Date: Aug 2006
Location: albuquerque
Posts: 55
Likes: 0
Received 0 Likes
on
0 Posts
I've never heard the Racing Beat catback on a T2, but on a N/A, I personally think it sounds like ***.
I had a N1 on my Impreza, not quite the same, but... kinda? Sounded pretty good.
Just be glad you got a T2.
I had a N1 on my Impreza, not quite the same, but... kinda? Sounded pretty good.
Just be glad you got a T2.
09-04-07, 12:02 PM
#25
Senior Member
Thread Starter
Join Date: Aug 2005
Location: San Francisco
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
sorry im still kinda newb but im trying to learn as much as possible. i'll be bringing these parts to a shop to have em put on but i need to know what to order. will that 3" downpipe from racing beat work?