Lefty2Guns

Hello all, I am new here and I am trying to get some feedback/input on weather to do the XLR8 J-Pipe that keeps the cat (not to attract unwanted attention from the wrong ppl) add a hi-flow cat and throw on the XLR8 CatBack Exhaust or just do the XLR8 J-Pipe V2 delete the third cat and put the exhaust on? Any and all info would be greatly appreciated..........BTW I have a 3G (05) TL 5AT w/ NAVI

EvilVirus

iTrader: (8)

V2


If you are concern about inspection; 3rd cat isn't an issue in most states as it doesn't carry a sensor.

Scottwax

There is a dyno test on a J30 that had the XLR8 v1 and a high flow cat. The XLR8 v2 made an additional 10 hp and 9 lb-ft of torque. No visual inspection here, just check for codes so I went with the v2. No problems passing yearly emission/safety inspections.

MrHeeltoe

iTrader: (1)

It wouldn't be too surprising to see the V2 make more power over a V1 with a cat...since the V2 doesn't have a cat.

Nick216

firestone passed my inspection with v2 jpipe.

Excelerate

iTrader: (1)

I would definitely recommend the V2 j-pipe combo with our XLR8 exhaust. The third cat isn't monitored and won't trigger a CEL when eliminated. It should pass visual inspection in most states since you've still retained the factory pre-cats.

Scottwax

The v2 made more power than a v1 WITHOUT a cat. Sorry, I realized I put in that it had a high flow cat, it didn't, it had a test pipe.

Here is the thread about it: http://honda-tech.com/showthread.php?t=3023862

anx1300c

iTrader: (2)

XLR8 V2. No need to look any further. Best j pipe on the market.

NBP_BALLER

I have the XLR8 Quad exhaust and XLR8 V2 J-pipe, Get the V2, the second cat is there only for making the car an "ultra low emmision vehicle." It wont add any rasp and sounds like sex

TacoBello

I really really hate to be "that guy", but I remember seeing a comment in one of the many exhaust/j-pipe threads about which j-pipe made power where in the RPM range.

I for the life of me cannot find that now. Comparing the big three (RV6, XLR8 and ATLP), which j-pipe made power where in the rpm range. I remember one was good for low rpm, one was good for high rpm (aka racing) and one was somewhere in the middle.

Can anyone help??

FamilyGuy

Delete the 3rd cat. It's useless, unless you're an environmentalist.

I believe RV6 made the most low end power, ATLP the most top end, and XLR8 in the middle. Correct me if wrong, going off memory here. Don't recall which made the most HP vs TQ. But I also remember something about our crazy ECU constantly adjusting things on the dyno, thus making that test subjective?

Honestly, I think the biggest difference and the question you want to ask yourself is to keep the 3rd cat or not to keep the 3rd cat? I say get rid of it, especially if you're looking for performance.

FamilyGuy

Found this for ya:

https://acurazine.com/forums/3g-tl-performance-parts-modifications-112/xlr8-v2-j-pipe-dyno-numbers-860816/

https://www.heeltoeauto.com/blogs/j-...6-vs-xlr8.html

Excelerate

iTrader: (1)

But I may be biased.

justnspace

iTrader: (1)

on the street, where the pipe makes the gain(low mid high) is negligible.

our car is made to make peak power in vtec.
so, as long as you accelerate to 4k RPM and beyond you'll feel the jpipe's gains and edge out any stock TL's.

FamilyGuy

You can't always drive over 5k rpms in the middle of rush hour

justnspace

iTrader: (1)

hey; i'm not the one splitting hairs on where the jpipe makes power.


with jpipe and PCD's, I gained a healthy amount of torque at 2.5k RPM.

FamilyGuy

TacoBello was the one asking about it.

justnspace

iTrader: (1)

what will we ever do without you, Family guy?

TLOHTL

See this is what REALLY gets me going....

When people do multiple mods at once ; ie. PCD's & j-pipe....

Outcome : " Bro I gained a healthy amount of torque at 2.5k RPM up ..... "

I say .....

Each and every Mod will perform differently on your car.
Also each j-pipe adds "power" differently.

The rv6 v3 j-pipe adds power vs stock only in the low-mid range.
It actually loses on top end ! I lost 6whp & 12wtq. Peak Power !

The Atlp v2 gains power vs stock on upper RPM's only.

The xlr8 v2 is supposed to be a balance, due to its design. I've seen it gain low, mid and top end. I will be doing a b4/after Dyno.

Now if you take :

Tl a ) stock makes 210whp
Tl b) PCD's makes 226whp ( gained 16whp )
Tl c ) PCD's & rv6 v3 j-pipe 220whp ( bro I gained a healthy amount of power )

I see it time and time again ppl add multiple bolt-ons at once and then say "wow" I see gains. You would be shocked if you actually installed these mods 1by1 and gathered there results.

And I would suggest getting XLr8 v2 j-pipe !

justnspace

iTrader: (1)

^breaux, calm down. stop splitting hairs.

that's all you're doing.


we can put both under the microscope.
both pipes will make power.

the xlr8 is designed and molded After the Rv6.....
both make power, son.

FamilyGuy

I've had both. First the XLR8 and now the RV6 one. I did notice a slight loss in the top end with the RV6, but I gained in the low and mid range, and the car still pulls harder than stock up high. I do miss the pull up top with XLR8 sometimes, but now I don't have to rev it up past 4k to feel it anymore, the car just pulls hard across the whole band, and that satisfies me more in a daily driver. Both companies make great quality products IMO, you really can't go wrong with either one.

FamilyGuy

IMO, choose the J-pipe according to your exhaust choice. If you want to keep it a single exhaust, go with the XLR8 J-pipe. If you want a dual exhaust, go with the RV6 J-pipe. My $0.02.