Quick write up...If you're not going true dual, or your exhaust didn't come with a y-pipe, these are great to have. Much better than stock.

The inlet is standard (2.5?) but the outlet is 3". Now I just need to find an exhaust that will bolt up to the y-pipe with a 3" pipe, or have something custom made. Any suggestions?

stock


installed


Compare...

 

You can try Japtrix B-Pipe. It's 3" opening, that tapers down to the stock Muffler opening. www.japtrix.com

 

Perfect! That's what I needed. Thanks!

(except the website isn't working...anyone sell this things??)

 

Oh I see, they're redoing their Website. Contact wespak (Gus). He's the one that connected me with Japtrix. He can help you.

 

Call 561-963-8700 and ask for Roger Case or Roger Acham they can help you there.

 

Gave them a call...left a message...no reply yet. I hope they're still in business!!!

 

They are, they are just very busy and with the holidays it might be tough, but if you don't get a call back email me your info and I will ask one of the Roger's to call you. gusm@sfzcc.com

I'll give them a ring tomorrow anyway.

 

Ah heck. I just ordered a Gruppe-S y-pipe, but wasn't aware it's outlet was larger than stock. Can anyone tell me about how much these Japtrix b-pipes are? (Just to give me an idea of what I'm looking at.)

 

Don't quote me but I think around 250.00 or so.

 

how does it sounds with the new y-pipe installed? is it more aggressive/louder than stock?

 

I was thinking about picking up an Invidia N1 if I couldn't reach these guys.

Let them know that they have a potential buyer in waiting...I left them a message; Eric with a (425) area code.



The sound of the y-pipe is nice. I was already running Kinetix resonated test pipes, so my car was louder...but this y-pipe deepens the growl. Hard to explain...but I think it sounds better. It is definitely louder under full acceleration.

I'm not into super loud exhausts, so this is about right...which is why I fear getting the Invidia...I don't want anything that's going to attract too much attention.

 

cool thanks for the input

so have you done any dyno tuning, are you running lean with test and y-pipes?

 

No, I haven't done any at all. I was going to get the Technosquare ECU reflash to level out the AF ratio...but I won this stupid y-pipe on e-bay and now I'm just trying to get my exhaust set up right...then I'll get the ECU reflash next month.

I also have JWT pop, Crawford plenum, kinetix test pipes...so yeah, I'm probably running lean.

 

I talked to Roger and he got the message and will be calling you back.

 

Thanks for the help.....they're shipping it out tomorrow morning. Makes me very happy....cause I can't stand when my car isn't running top notch.


I'll take some pics and do a write up...I think they'll be getting some more business with all the y-pipe deals going on.

 

I am glad westpak(Gus) was able to help you out! You won't be dissapointed with the Japtrix B-Pipe.

 

Does connecting the japtrix bpipe to a ypipe with a 3" outlet make any difference over just using the stock bpipe, performance-wise? Has anyone proved that a bpipe is beneficial in this situation? I have a 3" outlet connected to the stock bpipe.

 

What did they charge you for the bpipe?

 

They did dynos with their y-pipe and got 5-6 HP gain and then they did dynos with their y-pipe and mid-pipe and got 10-11 HP so they attributted 5-6 HP to the mid pipe.

For the price you cannot beat their two pipes and you get the gains, they tried a couple of mufflers and no power change only note of the sound, so great deal for those that want to keep their stock muffler but get the gains.

 

Well, in my opinion, I don't think it's good to have such an abrupt "wall" in your exhaust. That's gotta cause some back pressure...you're going from 3" to 2.5"...and if you held the gasket over the 3" hole, you'd see what you're doing. The Japtrix has the 3" inlet for the b-pipe then tapers down to a 2.5" outlet for the muffler.

I'm sure it isn't huge, but because I know it's there...I can definitely feel it! I can hear my car crying.


Oh, they charged me $225 + shipping.
Piece of mind can be expesive.