H23Accord

iTrader: (8)

I try not to frequent this site too often because its bad influence, all of you always make me want to do yet another mod on what was already a perfectly fine daily driven automobile. Now it seems to be the possibility of a j-pipe.
Lately I have seen a lot of talk about the j-pipe on our cars and swapping it out for one which would increase performance. We have a few venders on here each selling their own patented version with pictures and dyno graphs to show power gains, but what makes one any better than the other? They all seem pretty similar to me. Honestly it seems like the same comparative idea of the intake wars with the Fujitsu intake vs. AEM, but maybe I am wrong. My question is not geared to bring out the best one overall, but more of why would someone choose one versus another?

Discuss...

Rick_TL-S

I think one member put it best when he said, everyone will have their own little bias w/ R-V6 J-Pipe owners standing by R-V6, ATLP by ATLP, and so forth.

Of course, this isn't always the case. Anyways, I think they all pretty much perform the same. I chose the R-V6 for the price & combo. deal over ATLP as well as the fact that it doesn't sit as low. But that's just my own reasoning. I still have a great deal of respect for our vendors who choose to supply parts for a car that is already low on the amount of aftermarket performance parts available.

Bearcat94

Didn't we do this thread a few weeks ago?

:deja vu:

05BlkTL

I chose ATLP because I liked the smoother connection into the collector. I have nothing against the other designs and no experience as i don't have anything installed yet, as i'm just going to install everything (ATLP jpipe, 3rd cat and base exhaust) at once. RV6 package is a hell of a deal, i don't see how you can really go wrong with any of the choices ATLP, RV6, XLR8

Ramrodthrusterpuppy

That pretty much goes for almost every thread....

BTW, what wheel fits my....

ifirahse

iTrader: (6)

RV6 is definitely the best bang for the buck. For $360 shipped you get the j-pipe and 3rd cat delete.

Those two alone would cost over $525 from ATLP, not including shipping.

Plus, the ATLP sits lower, so if you're dropped more than 1.5" it's going to scrape.

That being said, I'd say that the ATLP has a slightly better flow.

greco9885

iTrader: (1)

i believe the ATLP/XLR8 have ALOT better flow. The rv6 is VERY comparable to stock, except its alittle better flowing. the rv6 pipes kindof "force" the air out the exhaust, while ATLP/XLR8 seems to flow ALOT better and smoother.

I bought the full rv6 package. In the near future i will be getting the atlp/xlr8 one

minkl81

iTrader: (2)

it'll be cool to have dyno done on each of these jpipes for true comparison

Bearcat94

I'll do it.


I need some one to ship me 1 RV6 J-Pipe and 1 XLR8 J-Pipe. I'll also need $225 for 3 dyno pulls.

I'll do the labor gratis.



:wink:

minkl81

iTrader: (2)

haha.. i can do that too with parts and dyno costs provided

CJ0920

I think the XLR8 flows better, but that's my opinion, and that's what I'm rocking.

Sonnick

Lol. I have the RV6 Jpipe and am happy with it and have seen good gains from it. I've also looked at the designs. I'm no engineer, but it looks like the ATLP/XLR8 does flow better, by how much I don't know. They both hang lower than the RV6 so there may be scraping problems but they flow better. RV6 is a little cheaper, etc basically you can't go wrong with any of them.

Also, the different PC delete/Jpipe combinations will give different performance gains too as with each different exhaust..

swoosh

iTrader: (5)

lets quit the wars and get some numbers out....

1> Excelerate jpipe and exhaust....doubt if Josh does Race pipe
2> ATLP jpipe race pipe exhaust....Mike you gonna do precats ???
3> Richie v6 precats race pipe and jpipe....Will any plans for an exhaust ???

Lets holla at people who have the combinations and i think most of them do have dyno's done already....

We know according to price:
1> Richie v6
2> Xlr8/ATLP

The way it sits from SNUG to down low:
1> Richie V6
2> ATLP/ XLR8

JwongTLS

How much lower does the ATLP/EXL8 sit?

Maddizm

iTrader: (5)

Is this true? I have no idea. People were saying stuff about how low the other ones hang and I'm dropped so I went with Rv6 package. But yeah do we really know who has "better flow"?

ib18c1

iTrader: (6)

Yes the ATLP and XLR8 does sit lower, however being slammed and daily driven, there has been minimal damage to my Jpipe. For one, if you are lowered only about 1-1.5" you should have no problems wtih the Jpipe scraping bumps or dips. Those who drive low usually are not careless because they take care of the car, they already know what they get themselves into while dropped so low. So why would anyone be going into a dip/bump at highspeeds while slammed in the first place?

Yes it is low, just take care of your car and your jpipe will be fine.

I admit I bottumed out the Jpipe twice because i understimated the bumps around my school. The jpipe was knocked very hard. I had a close examination of the damage while the car was on the lift and surprisingly,the damage were minimal! I thought the pipe would have definitely bent in but it did not! just scrapes. So from experience, the ATLP Jpipe is very strong. I have the first version to have ever come out and been on the car for roughly 10k miles and no problem what soever. I know my is biased towards ATLP only because I have it and have not have any experience with XLR8 and RV6.

In terms of power, The Jpipe surely gave the car the oomph in low end torque and high end power. Having a equal length piping at a bigger size compared to stock killed the drones of an aftermarket exhaust.

Overall, very happy with the ATLP J-Pipe, it has to be good, why would XLR8's look so similar

phossotronic

From what I understand, here are the main differences:

ATLP/XLR8 = equal length piping, RV6 is not.
ATLP/XLR8 hang lower vs RV6.
ATLP/XLR8 cost more than RV6.

From the limited sample of dynos done on these pipes, XLR8 has shown the greatest gains but it was only 1-2 hp/tq more from what I remember (vs RV6). Search and you will find the exact numbers.

SpecTro

iTrader: (2)

There is a 1-2hp/tq difference between all this jpipes, RV6 being the ones with the lowest one. However, rv6 is priced considerably lower than the others, along WITH a 3rd cat delete pipe which is included, which also eliminates back pressure from that area, i dont know, maybe 1-2 hp/tq up top?? It is also the shiniest lol.

If i were to buy one right now it would be RV6's. I mean come on, look at the deal you get with it, for a lot less.

juruki

iTrader: (2)

^^ If i get a dyno with the ATLP and you get a dyno with ur RV6 theres no way to compare the two anyways. You need to do it at the same machine on the same day.

Xiomaro

iTrader: (5)

I gotta go with my main man Richie. The amount of hand made quailty that goes into the jpipe is awesome. You can just look at it and say "damn, some one put some effort into this". Good solid material, perfect welds!, and just looks stunning. GOOOOOOO RICH!!!!!!!!!!

Timeless

ATLP and XLR8 will flow better. The junction in the RV6 pipe will force exhaust from one side perpendicular to the other exhaust stream. This will inhibit exhaust flow.

The junction in the XLR8 and ATLP pipe puts the exhaust streams much more parallel with each other before they converge. Therefore, better flow.

The differences won't be huge but could easilly be a few wheel horse power.

greco9885

iTrader: (1)

i have rv6 and im going to be getting the atlp or xlr8 one. im going to dyno my car soon, then im going to redyno it after the new pipe. same place so ill let you know. it will be a few weeks

swoosh

iTrader: (5)

Awesome....I think that would make it clear who better air flow and hence better gains.... I think XLR8 and ATLP both have the same designs and sit the same way.....

firstacuratl

iTrader: (2)

RV6 is equal length ... measured mine before install. The front/rear pipe junction is what differs in design from ATLP and XLR8.

anx1300c

iTrader: (2)

If you do only two pulls on separate days it won't mean squat. You'll need to do at least three pulls with the RV6 pipe, then let the car cool off and swap pipes, then do three more pulls and take the averages. Try to do the two sets no more than an hour or so apart so that there's not a drastic change in temperature as well.