[MikeySpec]

The current modifications to my TSX are as follows

04 TSX MT
- Homemade Short Ram
- CT Eng. Header
- Random Tech High Flow Cat
- Apex WS
- P2R TB Spacer
- Hondata Reflash


The changes made here are the PLM header and test pipe that replace the Comptech Header and Random High Flow Cat.

First let's look at some pics of the parts getting swapped out.

The first things noticed are the larger tube sizes, different runner pairings and the cat delete.

How much larger are the tubes?

CT ENGINEERING/RANDOM TECH CAT

1.6in OD primaries on the CT

1.75in OD up to the secondaries down the merge.

Ending at 2.00in OD at the random tech cat

PLM HEADER / PLM TEST PIPE

1.75in OD primaries

1.90in OD secondaries

2.00in OD merge

2.5in OD collector and test pipe


The fit was excellent on the PLM header. It was a direct fit and there was no wiring extension necessary for the o2 sensors. I didnt do any welding on the slip fits but i probably will the next time i take the header off. Surprisingly the car didnt grow a raspy tone out of the exhaust (Apex WS).

On to the dyno results

7whp gain and 5 tq with about 10whp found around the 7,000 RPM area. The car feels alot quicker and responsive.

Previous best at the track was [email protected] with 187whp and 162 tq. I'll be returning the track this Sunday with 205 and 175 tq. I'm hoping to crack into the 13's and see if i can get close to 100mph out of it.

Here's some footage of the dyno and a ricer flyby.

 

[DC206R]

Nice! I wished I could pair that up with a CAT and my exhaust setup would be golden since the Legalis R is somewhat quiet and I'd like to keep it that way.

 

[MikeySpec]

Comptech header and Random cat are back up for sale. Buyer flaked. Feel free to PM for info.

 

[BluLabelCL9]

Great info :+1:

 

[jvillefinest]

Nice! I wished I could pair that up with a CAT and my exhaust setup would be golden since the Legalis R is somewhat quiet and I'd like to keep it that way.

jealous...best exhaust ever!

 

[SlowCivicEx]

Nice to see the PLM header a little more power!

 

[CalgaryTSX]

Another excellent thread, pics and results!

While the CT header is a quality piece and bolts right on, I've never seen it deliver decent gains. Regardless of the catalytic converter installed or not.

 

[jam sandwich]

Great post Mikey.. Did you ever document the difference in power between the CT header and stock header? I can only wonder what the power difference is!
I'd love to buy a PLM header but I would prefer to run a cat so I dont get my rear bumper covered in soot as well as not having a potent smelling exhaust

 

[MikeySpec]

Great post Mikey.. Did you ever document the difference in power between the CT header and stock header? I can only wonder what the power difference is!
I'd love to buy a PLM header but I would prefer to run a cat so I dont get my rear bumper covered in soot as well as not having a potent smelling exhaust

I bought the car from 1TSXer(Jason) with bolt ons already. The only power mod changes i've made since are the ghetto fab'd filter and the PLM header.

 

[IntegraGSR23]

:tu:

 

[SlowCivicEx]

Great post Mikey.. Did you ever document the difference in power between the CT header and stock header? I can only wonder what the power difference is!
I'd love to buy a PLM header but I would prefer to run a cat so I dont get my rear bumper covered in soot as well as not having a potent smelling exhaust

I never had the soot, or the smell! I loved my PLM header, and miss it already!

 

[awoc]

Thanks for the info. I'm not surprised it made more than the CT. The tube diameters are a lot larger on the PLM. Great numbers you are putting down now!

 

[CCColtsicehockey]

Those are great results. Wish I could run the PLM header with my Js Racing 70RR but it is a header back exhaust. I am worried my k20 is racing header is a bottleneck in my setup.

 

[snYpz]

Those are great results. Wish I could run the PLM header with my Js Racing 70RR but it is a header back exhaust. I am worried my k20 is racing header is a bottleneck in my setup.

Why not go quality custom from ASP then?
I would never expect to see any replica parts on your car.

 

[din9lebeRrY]

Why not go quality custom from ASP then?
I would never expect to see any replica parts on your car.

Werd, I can see him with a Toda header lol.

 

[snYpz]

Too bad i didnt do back to back dynos, i had k20 maximwork header before changing to the ASP headers.
The maximworks sounded very very nicely with all the flex pipes. From what i have read, toda are quite similar to maximworks.
ASP probably has more midrange torque.

 

[dinoc]

Does the PLM header fit the stock catback exhaust without alteration ?

 

[peterscrib]

umm.... what is this about replica? what is the PLM replicating?

 

[asselin.jerome]

^Hytech headers

 

[CCColtsicehockey]

Why not go quality custom from ASP then?
I would never expect to see any replica parts on your car.

Werd, I can see him with a Toda header lol.

Too bad i didnt do back to back dynos, i had k20 maximwork header before changing to the ASP headers.
The maximworks sounded very very nicely with all the flex pipes. From what i have read, toda are quite similar to maximworks.
ASP probably has more midrange torque.

:laugh: Yeah you guys are right. I just am curious to know if my J's header would possibly be a bottleneck in my setup. Definitely would love a Maximworks or Toda someday. I will have to look up ASP as I know nothing about them. Thanks