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Fastline Performance 2.5" Racing 200-cell Metal Cat Pipe, 2004-08 Acura TSX CL9, FLP-CPMC-CL9

Part Number:
Fastline Performance
Product Line:
Metal-Core Bolt-In Catalytic Converter (200-Cell, Metal)
Vehicle Fitment:
Acura TSX, 2004-08
Fastline Performance 2.5" Racing 200-cell Metal Cat Pipe, 2004-08 Acura TSX CL9, FLP-CPMC-CL9

This item is currently unavailable for ordering. Please message us for more details.


* 2.5" pipe diameter for maximum power gain for all header/exhaust combos, EVEN STOCK SYSTEMS.* 100% full stainless steel construction.
* Comes with an integrated CEL eliminator -- NO DEFOULER REQUIRED.
* Comes with high end expensive machined flanges.
* Comes with 18-8 stainless hardware, metric thread and 17mm head size. 6 bolts, 12 flat washers, 6 spring lock washers, and 6 nuts 17mm.
* Allows fitment of OEM heat shields

A note on cell counts: It has become apparent there is a debate on how many cells there are in a Magnaflow metal core cat. Some say it is 200 cells, others say it is 300 cells. We can conferred with Magnaflow Engineers and have come to the conclusion that neither claim is actually true. Due to the concentric (circular) construction of the metal cores, the cells in the center are actually a different size than those toward the outside of the core. Also, due to the thin and flexible nature of the material used to make the cores, production inconsistency causes variable sizing. As such, Magnaflow largely advertises the cores as 200 cells while in reality many are closer to 300 cells. For this reason, we now claim a 250 AVERAGE cell count for Fastline Metal Cats using Magaflow cores! The cell count is relatively moot because no matter what the actual cell count is in an FLP core, it is significantly lower than that used in the OEM cat and will provide significant power gains even without tuning! Additional flow is provided by larger inlet/outlet sizes. BUY AN FLP CAT WITH THE CONFIDENCE THAT IT IS THE MOST WELL CONSTRUCTED CAT AVAILABLE FOR BOLT-IN TSX CL9 APPLICATIONS!

Customer Questions


Is this the same diameter as stock cat or narrower?


The cat itself is about the same diameter of the stock cat, although it is shorter.

The piping is quite a bit larger on the FLP pipe as compared to stock.


would it bolt on with a ct header and skunk 2 exhuast? tsx 04 AT


Yes, this cat directly bolts to a CT Header and a Skunk2 exhaust.


Will it serve as a direct replacement for a stock cat? using stock header and exhaust ...


Yes, the FLP cat is a direct replacement for the stock cat.

Q:Is that CAT much louder compared to the stock one?
A:It is not going to be any louder than stock with this cat pipe.

Will this bolt on with a apexi WS2 exhaust and a ct header? 2006 tsx AT


Yes, it will. It will work with any performance replacement cat-back and header.


Will this still pass emissions in Texas?


This part is not a legal part to install on a road car. Local testing can vary and so the car may or may not pass without it.

Q:do you do these with the 2 bolt domed header flange for the JDM K20 engined cars?

We only offer this part with the 2.4L CL9 3-bolt flange at this time.

Q:i was thinking of going for a weapon r header. is it possible to weld this cat to the test pipe that it comes with?

This Fastline cat does not fit with the Weapon-R header. If you order the Weapon-R header on Heeltoe you will find that we have an option to add on a converter to the order. You'll need to have that custom welded in.

Q:Does this come with all the gasket?

This pipe does not come with a gasket but also mates to opposing flanges well and will not leak.

Q:Will this fit into a J'S RACING Titanium FX-PRO 60RS (Dual) for Accord Euro and on stock headers???

Yes, it will, as long as you have a 2.4L CL9, not a 2.0L CL7.

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  • FLP High flow CAT August, 16
    By RAFAEL S., Street Performance Enthusiast
    perfect fitment on 2007 Acura TSX easy install ,my old one was clogged high mileage ,really does make a difference pulls harder!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  • FLP Cat October, 26
    By Stephen A Burke, Grocery Getter
    great service as always from Heeltoe.
    quick shipping and a quality product .
    my stock cat was clogged and this was an easy option for replacement , I do feel a significant difference in power as the car had none with the malfunctioning stock cat .
  • FT high flow cat October, 2
    By majork, Street Performance Enthusiast
    nice product fit perfect with my dc sport header ( need another header....). great performance adding. may work great with a cat back.
  • FLP High flow CAT May, 4
    By Kenny C, Street Performance Enthusiast
    Very nice gains over the stock 04-05 TSX CAT. Gains can be felt in the midrange all the way to redline. Retains ability to reuse stock heat shields however, the tabs tend to break off. Otherwise, this is a very well built piece!
  • Excellent purchase! August, 25
    By Andreas Liliegård, Spirited/Stylish Commuter
    Well made piece with noticeable power gains!
    A big plus that the stock heat shields fit to be reused with this one.
  • June, 28
    By Serge, Grocery Getter
    Ive bought this cat for me but i was too lazy to re weld it for use with weapon r header and sold it to my buddy . We have installed it and the gains were notisable ! Sound hasnt changed , his car doesnt smell as mine with test pipe but pulls really better and from lower rpms ! The most restrictive parts in tsx is intake , with its complicated construction and stock cat with a lot of cells , upgraiding those parts everyone will feel a very good gains . Nice mod for its price !! One more thing i want to say is that this part has a very good building quality and materials , its pleasure to take it out of box and look at it and hold in hands . Big respect to Marcus for his in house manufacturing !

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