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Old March 14th, 2009, 09:19 PM   #1
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AEM v2 vs J-pipe

What do you think is the better performance mod, AEM v2, or a J-pipe on a stock 6 speed 05 accord?

which will provide the most gains?
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Old March 14th, 2009, 09:26 PM   #2
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I honestly have no idea. I went with a used AEM CAI V1 first and then added a j-pipe. I usually make an intake my first mod and then go backwards. I don't know if anyone has just installed the jpipe w/out an intake.
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Old March 14th, 2009, 09:49 PM   #3
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id say intake.
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Old March 15th, 2009, 12:32 AM   #4
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yea
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Old March 15th, 2009, 02:20 AM   #5
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i'd go intake first definitely. needs to be able to breathe before it can exhaust...imo. I got a used v2 for sale, pm if like. 160 shipped

it's on ebay under:

AEM V2 Cold Air Intake Honda Accord 03-05

Last edited by ahhhz; March 15th, 2009 at 10:29 PM.. Reason: added link
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Old March 15th, 2009, 08:47 AM   #6
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^^^ awesome deal!! go w/ the AEM V2 i just put it on my car and i looovve it!
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Old March 15th, 2009, 10:17 AM   #7
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Is the gain from intake noticeable more in topend or low end
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Old March 15th, 2009, 02:33 PM   #8
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Is the gain from intake noticeable more in topend or low end
I'd say mid-to-top end. A CAI kind of takes a bit away from the throttle response down low (like below 3krpms), but once you hit like 3-3.5k rpms, you can really start to notice and then the gains seem pretty consistent up to fuel cutoff - just a nice smooth powerband.
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Old March 15th, 2009, 02:59 PM   #9
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when v-tec kicks in, you'll hear it! sounds like a harley (ok not really but it's beefy). You'll FEEL the car breathing better
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Old March 15th, 2009, 03:54 PM   #10
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Personally i do not think an intake does anything but just makes the car seem deeper, yes it does help the car breath better but there are results with the j pipe for gains not so much with the intake... I mean i went with the intake first cause i love the sound but if your going truly for just the performance factor i would go with the j pipe since their are proven results of gained power.
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Old March 15th, 2009, 04:52 PM   #11
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doesnt AEM have some dyno graph on their websites thats proves the v1 gave some power. I always thought that the intake doesnt do ****, but everyone always says that the v2 is amazing for gain.
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Old March 15th, 2009, 04:55 PM   #12
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Personally i do not think an intake does anything but just makes the car seem deeper, yes it does help the car breath better but there are results with the j pipe for gains not so much with the intake... I mean i went with the intake first cause i love the sound but if your going truly for just the performance factor i would go with the j pipe since their are proven results of gained power.
I don't know, getting a consistent source of cold air is pretty important. And IMO, I believe people have shown gains with just an intake. I don't think there's a big difference between the V1 and teh V2. I will say, however, that you shouldn't take the manufacturer's word on the dyno numbers because there's no way it's giving you 10+whp. Probably 5whp/5wtq would be my guess. Jpipe gives you more, but remember that the dyno was done with an intake. I still say start with pulling it in, end with pushing it out. Just my .02
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Old March 15th, 2009, 06:07 PM   #13
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I don't know, getting a consistent source of cold air is pretty important. And IMO, I believe people have shown gains with just an intake. I don't think there's a big difference between the V1 and teh V2. I will say, however, that you shouldn't take the manufacturer's word on the dyno numbers because there's no way it's giving you 10+whp. Probably 5whp/5wtq would be my guess. Jpipe gives you more, but remember that the dyno was done with an intake. I still say start with pulling it in, end with pushing it out. Just my .02
That is true, the j pipe does give more power but i get what your saying starting with the cold air coming in and then goes out, i mean honestly i did feel a little difference when i installed the intake.
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Old March 15th, 2009, 06:24 PM   #14
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j pipe and aem v2 is good for 25 whp? And test pipe doesn't do anything?
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Old March 15th, 2009, 06:45 PM   #15
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j pipe and aem v2 is good for 25 whp? And test pipe doesn't do anything?

25 whp HAH I WISH lol not even close bro, probably like 11 to 15 whp depending on if ur an auto or 6 speeed, and test pipe not to sure about it
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Old March 15th, 2009, 07:18 PM   #16
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I'm mt. And test pipe won't do anything?
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Old March 15th, 2009, 07:29 PM   #17
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^ to be honest bro im not to sure i know it will help out with a full exhaus t system tho
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Old March 16th, 2009, 03:40 AM   #18
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I want to get the v2 for my AT v6. I was wondering if it was worth it, and if the v2 had the same drawbacks as a CAI, specifically hydrolock. I live in New Orleans, so roads flooding is somewhat of a problem...
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Old March 16th, 2009, 05:50 AM   #19
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^^^^ bro I have a v2 in my auto and I LOVE IT! But u living in NO and the hydrolocking will be a problem unless u get the k and n intake which can be made into a short ram intake or cold air.then u will be set if u go sri and not have to worry about hydrolocking but I believe the gains won't be the same as compared to a cai.
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Old March 16th, 2009, 06:06 AM   #20
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intake first
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Old March 16th, 2009, 07:59 AM   #21
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Well I'm getting both. I just wanna know which will provide more gain
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Old March 16th, 2009, 08:02 AM   #22
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Well I'm getting both. I just wanna know which will provide more gain
ohh. from the butt dyno.. the v2 gave more gains and much more noticeable change in the car's behavior/performance than the jpipe did (jpipe was installed after v2). i think the two are a good combo though and the jpipe certainly improves the tone of the exhaust
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Old March 16th, 2009, 10:57 AM   #23
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I'm mt. And test pipe won't do anything?
I don't think the test pipe does much even with an full exhaust set up. I bet it gave me 1-2whp.

Intake and jpipe together probably gets you 10whp max, 10wtq max. But you've also gotta remember, those are peak numbers. I don't care as much about peak vs. how it affects my entire power band. I've seen setups that give 30whp peak gains, but do nothing until the last 2k rpms for example (RSX). But for the intake and j-pipe for our car, it gives power gains throughout the entire power curve. So you're making more power at every spot in the rpm range. Very beneficial when you look at it that way.

I think guys with all the mods and a tune are putting down around 230whp.

We put down approximately 200whp stock.

So intake, jpipe, test pipe, exhaust, pre-cats, UR pulley and a tune together nets you approximately 30whp. And you've gotta remember that a good tune in itself probably is 1/3rd of that power increase.
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Old March 16th, 2009, 10:59 AM   #24
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I don't think the test pipe does much even with an full exhaust set up. I bet it gave me 1-2whp.

Intake and jpipe together probably gets you 10whp max, 10wtq max.

I think guys with all the mods and a tune are putting down around 230whp.

We put down approximately 200whp stock.

So intake, jpipe, test pipe, exhaust, pre-cats, UR pulley and a tune together nets you approximately 30whp. And you've gotta remember that a good tune in itself probably is 1/3rd of that power increase.
+1 yea the tune is key. i'd get the V2, skip the Jpipe for now and put that money toward an AEM fic and tuning
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Old March 16th, 2009, 11:55 AM   #25
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this makes me sad. Looking at a wrx, mazdaspeed3, gti, any turboed car basically is so much cheaper and easier to make faster. :-( i wish accords were turboed
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Old March 16th, 2009, 03:19 PM   #26
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^^^ bro that is soo true, only way for us to get some serious gains is a sc, i believe. I mean im an auto SUCKS lol, i have j pipe, custom exhaust, ur pulley, apexi ground wire kit, apexi vafc2. Next is my tune. If i hit 220 to 230 WHP i think ill be just fine with that. You cant ask for so much since they are simple bolt ons...
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Old March 16th, 2009, 04:34 PM   #27
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this makes me sad. Looking at a wrx, mazdaspeed3, gti, any turboed car basically is so much cheaper and easier to make faster. :-( i wish accords were turboed
Try not to compare or you'll end up in tears

My buddy has a WRX and he just put on a turboback, uppipe/downpipe/delete all cats and tune and he got ridiculous gains. Then he swapped a bigger turbo, fuel injectors, etc.. and his car is ridiculous off the line. On the street, he could take out 99% of the cars in a short run because he can hook so well and his off the line power is insane for the $ he spent.

Try not to compare or you'll be infuriated
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Old March 16th, 2009, 07:22 PM   #28
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yeah but f/i cars are also a lot more "touchy" when it comes to bolt-on mods. For example: a subie stock >subie untuned with intake..
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Old March 16th, 2009, 07:36 PM   #29
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Very true. I wanna see some accord dynos with j pipe and aem. Jpipe v2 and a tune is a about a grand. But a tl type s heAd is also a grand
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Old March 17th, 2009, 08:40 AM   #30
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Very true. I wanna see some accord dynos with j pipe and aem. Jpipe v2 and a tune is a about a grand. But a tl type s heAd is also a grand

there is a dyno for an auto with CAI + JPipe - just look at the J-pipe thread in this section.

Oops, it also had a catback. But it put down 224whp and 208wtq. We are 6MT's so we should see about a 5&#37; increase over that in theory.
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