I've done plenty of searching and googling and can't fund the exact answers I'm looking for. I'd like to get a bit more pep out of the 3.2 but without going overboard on cost. Is the 3.5 intake manifold worth getting, or should I just find another 3.2 manifold and have it port matched? I plan to go with the p2r spacer and thermal gasket, as well as TB spacer. I'm not trying to drop the cash for the j37 intake manifold-unless I find one on CL.

 

I bought 3.5 MDX manifold off eBay to get me little something more for time, plus if ever make switch to 3.7, gives me top plate. Mag vs Alum, so little less soak. Slightly more airflow. Not real noticeable, other than heatsoak honestly

 

Throw it in the trash and get a 3.7 I'm ad Tb would give u nice gain for around 400-500 bucks. The 3.5 I'm isn't bad either but doesn't have as large of a volume

 

I'm trying not to spend 500+ on the intake mani/TB before even counting in spacers, thermal gaskets, etc. Just trying to get bit more power without spending a massive amount.

 

gotta pay to play. Modding the TL is not cheap. power to ratio gain is horrible

 

if you don't want to spend money, don't get a tb spacer. it does absolutely nothing

 

Even with a bored TB and ported manifold? I'm all down to save the cash and put it towards other things, but if it's pointless then screw it. I know how much a difference all the small things make-I had a 2l VW (115hp/122tq) making just over 130whp/140wtq, on a college budget. Granted, that car broke A LOT and wasn't anywhere near as nice as the TL, but Id like to take advantage of all the little things I can.

 

Yea save your money. It doesn't help our cars at all even with a ton of mods. There's some threads on it

 

I read threads for it and against it which is why I asked. So I'll rule it out and probably just go with the thermal gasket. But I'm still looking for IM info, if the 3.5 is worth it or just stick with the 3.2.

 

J-pipe and HFPC's over intakes all day.

 

So the exhaust is more of an issue than the intake? I was already looking into cat deletes, should I just concentrate on the whole exhaust system for more bang for my buck then? Cat deletes, J-pipe and back? Is the stock exhaust size a restriction or should I go bigger? I'm not dropping 1k on an exhaust, I'll be having my local shop do it. Except the cat deletes, they wont touch that on a street car, but I have a way around that.

 

J37 intake works well with a bored j37 TB along with cold air intake and xlr8 j-pipe with xlr8 exhaust. I wouldn't waste your time on the j35 manifold.

 

but on a side note I have a j32 manifold if your interested in going the ported route.

 

The biggest gains for me were from HFPCs, 3.7 manifold/ported runners/ZDX TB/4" CAI (I group the four together as one mod) and Flashpro. (Not in any particular order) All three showed significant independent gains in trap speed. I would say all three were roughly equal, and all three could be felt seat-of-the-pants >5k rpm.

OP, the 3.7 swap has shown as much as 15 whp on a 3.0 Accord. It's expensive, but it makes power at the expense of some slight drivability issues (which can be smoothed out with Flashpro). I still recommend doing exhaust mods before swapping manifolds.

 

^i dont have any drivability issues?

 

You're an exception. Most people get some degree of rev hang and/or bucking.

 

i think it only applies to manual transmission as well. i don't have the bigger IM but i think i remember reading that.

the new flashpro checkbox helps it to a degree, there's even some rev hang from my setup and bucking in 1st gear, but the new flashpro option they added to the software helps some

 

yea none of that but I do have a p1078 code. says intake manifold runner high rpm malfunction. so that butterfly valve in the top plate isn't opening or something? I switched the solenoid back to the 3.2 unit and same code came back. U know of anything? I can't figure it out.... Car runs fine though but I feel like it could be better if I can fix this code

 

I have an '04 5AT so no rev hang, but '04/05 aren't tune friendly, correctly?

 

^not with flashpro, unless 6MT, and a newer '07-'08 MT ecu is replacing the old.


Sucks for us '04-'06 AT's!

 

Nope 04-06 AT gets no love from flashpro. I would go with HFPC's over the cat deletes. They cost more but reduce rasp when you modify the j pipe and rest of the exhaust. Unless you have those I don't see why you need the larger intake.

 

I'm going to try to keep my exhaust semi-quiet so I'm not too concerned about rasp, as long as the overall tone and volume sounds good. I'm going to start looking into J-pipes and go from there. Thanks guys!

 

You will also see a nice gain if you decide to go boost with the 3.7L IM, TB, and PnP runners. For my setup, I definitely think its helps the system breathe a lot better. When I was N/A I gained about 12hp before I added the Flash Pro.

I do have some light bucking, but it wasnt too noticeable until i added the turbo.

 

I'm sticking with NA, my car has 152k on it and I'm hoping it will last me another 2 years as a pretty reliable DD.

 

This really bugs me. so what do we do? get a ecu from a 07 AT?

 

The problem is the 04-06 Autos are 3 solenoid trans vs the 07-08 Autos which are 4 solenoid. The 04-06 Auto trans cannot be run with an 07-08 ECU. Not much you can do.

 

In this case, if you plan on swapping out mufflers and adding a jpipe, don't make the first move of cutting out and replacing your stock resonator with another brand. Just a suggestion, but I am very happy with the performance sound when paired with magnaflows and OEM resonator. I would hold off on MM delete as well, and only do that after you have determined you want more exhaust note. But jpipe and mufflers as a first round of exhaust mods shouldn't set you back too much while providing a noticeable difference in the tone of the car.

 

3 Weeks ago, I had the res and MM deleted. So I'm kinda screwed in that aspect, but we'll see how things go and if need be Im sure I can find stock parts if I decide I'd rather go that route once I have the J-pipe

 

Will j37 intake work on j35a3? If so what TB should I use?

 

^ yes and j37 TL TB is what you want to use

 

Use whatever J37 throttle body is cheapest. A few years ago, the ZDX TB was significantly cheaper than the others, so most of us went with that one. I don't know the pricing structure now, but manufacturers always seem to start gouging when they see an influx of orders on certain parts.

 

 

 

I got on ebay and got all parts of my 3.5 intake for cheep.40 for lower intake 50 for spacer 35 upper intake on my 01 acura cl. Just cleaned the parts thouroly and bam big gains.

 

Can you tell me exactly what you did so I can do it?

 

I know this is an old post, but I figured I would still chime in. More is not always better. In the case of the intake manifold, more attention should be paid to how easy air can flow and not how much air it takes in. Because if you bring in more air but it is still going through inefficient airway, you are just going to get a bunch of backed up air.

 

Halferland performance can make you a custom ecu wire harness for either Haltech or Link. I went with the Haltech R3. Expensive yes, but when I finish putting in the top end I'll go boost and then I can work out on what to do with my auto trans. Block, rod, pistons, and full catback exhaust with a tuned haltech r3 gave me a lot more power than I had before. But I didn't use Halferlands piston as they didn't have forged at the time. There's so much info on our J series engines that you really have to check all the different forums and sites. Took me a year and a half to get my TL to where it is today. Turbo is fhe way I'm heading but I know once I add boost my auto is going to fail. It just wasnt made for that kind of power. But finding a decent 6mt TL under $7,000 to $8,000 is almost impossible. If I ever find a decent 06 TL with a 6MT I'll just do a swap. But those are becoming a dime a dozen as well.

 

Last time that forum member posted on here was July 2019.
In regards to manual transmission 3G TL's, there are six currently up for bid on erepairables.com with the closest one to you in Maryland.

 

Yeah guessing I need to pay better attention to the dates, but as far as transmissions go there's more in the Florida area. Ive got a friend with a 06 TL 6MT where he just blew his motor. He put a lot into maintaining that car but threw too much NOS on it. Id buy a donor car for the right price as my acura isnt my daily anyways I appreciate the response in s super old thread lol.

 

OP, just be aware if you go this route youll need Hondata before you make any gains. One user's dyno showed a loss in wheel power pre-hondata, along with a high idle issue. The ECU will not know what to do with all the extra airflow.

holy balls i realize i just resurrected an old post. OP is prob retired by now