cool... so you're going to drive around with a testpipe on??

 

We don't have emissions in Michigan

 

Um, well yea. My cat is messed up so either I need to buy a new aftermarket cat or keep the test pipe.

 

That header looks nice!

The gains look even better.

 

Looks good. 20hp is an amazing gain.

 

so a test pipe is needed for this setup right? it doesn't bolt right up to the stock cat?

 

Correct, you can't bolt this system up to the stock cat because it has a two bolt flange...it's also a 2.5" collector. I wonder if a cat from an Integra would fit?

 

Stock exhaust manifold and cat kill a TON of power on 04-05 TSX's.

 

good gain. seems worth it for the price.

 

Incredible gains. Would this header work with an FLP cat mated to a stock exhaust system? Marcus?

 

It probably won't bolt right on, but nothing a decent exhaust shop can't fix.

 

How about welding a universal cat to the test pipe? I did that to a Jackson Racing race header. Cut out a section of the pipe and weld on a universal high flow cat. No CEL on my RSX.

 

Nice writeup! Very informative. 20 whp is a lot of bolt on. Good stuff!

I think stock Vtec should be lower in the TSX. I mean 6K is just not enough Vtec!

I see K-Pro in your future!

 

WOW that's a big bump in power for $600-something!

I figure half that is from the header and half is from the test pipe...give or take.

 

hey does the header come with the defouler? couldn't find one on ebay

 

It does not. We have them but not the right angle one.

Don't search for "defouler" that is the WRONG name for this part. It is a CEL or MIL Eliminator

 

so is the hanger issue just a design flaw, or is that how the jdm setup is?

pretty impressive. would be interesting to see how much it'd add to the 06+.

 

did u get any CEL after putting that defouler ?

 

I think this header would do better on an '06 because it breathes better.
I got the defouler (CEL or MIL eliminator) from Touge Factory on ebay, it's is 18mm fits Evo X, plus other vehicles.

I do have an engine code, but it's not because of the test pipe...in my opinion, when I took out my cat, the O2 sensor threads were destroyed, so I bought an aftermarket O2 sensor and wired it up. The code I'm getting is P0139, which is a slow responding O2 sensor. I think if I get a stock O2 sensor ($200) it will work correctly. We will see.
Other than that, I love the mod and would suggest it to most anyone.

 

Did you notice any decrease in low end power? Like, you need to push on the gas harder to accelerate than you previous had to. (I'm talking about 1k-3K rpms only)

 

No, I actually thought I was gonna see a much larger gain in the low-end, because the engine pulls much better now from 2000 rpm up. I still had awesome gains through-out the entire range, even down low. Look @ the dyno, @ 2.5k rpm I have about an 8 wtq improvement, and it stays around there til VTEC then climbs to a peak of about 26 wtq @ 6.1k rpm...just imagine if VTEC came on around 5k rpm.

Overall, I'm damn suprised @ the performance the TSX has all bottled up.

 

hmm i'm really thinking about picking up this header, but I have to get some things straightened out with my motor first. Running an 04 motor in my 06 tsx... long story...

 

I really want this header to, but California is a liberal state (Communist government and police state regime). Test pipes are so illegal here that they will soon fry people on electric chairs for running test pipes. Now pairing it up with a Magnaflow cat.... that might just be a better idea

 

Fantastic gains!

For the money though, I would've expected a little more compatibility and attention to detail (hanger).

 

For the money though, I would've expected a little more compatibility and attention to detail (hanger).

hunt for the perfect TSX header is still on.... :werd:

 

The header looks good, dyno is impressive too. I like how you gain power thru the entire rpm range.

 

Thanks everyone.

BTW, I sent my dyno results to Weapon R (sales and R&D) also mentioned the hanger issue...hopefully they can correct that before any other headers get shipped. Also, Marcus @ Heeltoe knows about the hanger issue and will keep an eye out for the headers he sends out to his customers.
So hopefully this blemish is corrected for new buyers and it becomes a mute point. For the price compared to DC, Comptech and especially Hytech, I think we have a winner for price/performance.

 

For the price compared to DC, Comptech and especially Hytech, I think we have a winner for price/performance.

Toda header is ~ $1200 at King Motorsports. So I guess we do have a new winner

 

If I hadn't just put in a CT header two months ago, I'd be all over one of these. Seems like a good option for some power at a good price.

 

1- hanger thing, I betcha anything this is a jdm/usdm thing. Hopefully WR does something with it, not sure they will tho. We shall see.


2- 04 versus 06 motor...yeah that kinda sucks, but you can basically get yourself back in line w a 06 intake cam:
Honda Genuine Cam, USDM 06-08 CL9 TSX Intake Camshaft RBB - Honda K-Series - Camshafts - Engine - HeelToe Automotive

3- California government won't approve a magnaflow cat either, nothing you'd want to run anyway. You might get life instead of the chair for running one.

4- TODA header....yeah better verify that. That's pre-toda-killing-usdm-distribution pricing. We used to get them for that much, now we need to get them grey market for $1800+!
Toda Exhaust Manifold, 04-08 CL9 TSX/CL7 Accord EuroR, 18100-CL7-00J - K20 - Manifold (Header) - Exhaust - 2003-2008 Acura TSX & JDM Honda Accord CL7 CL9 - HeelToe Automotive

 

RSX cat...yeah possible for sure. Although I have not specifically measured I would assume this header is from a EuroR which has the same K20 as a DC5.

 

I just read this thread, really nice gains. Im sure that the hanger problem is beacuse it was designed for the JDM Euro-R. From the pictures I can see that the hanger rest just like where my hanger sits.