ATLP 3rd Cat Race Pipe
ATLP 3rd Cat Race Pipe
Got a cool little prototype in the mail today finally after working a few details out. It's the 3rd Cat Race Pipe!
Here she is.

Make note of the tabs and screws.

Not convinced yet?

Here she is naked. Stay legal-looking! Retains the use of the factory heatshield for both aesthetics, and heat dissipation. It may also be used without it.

2.5" ID, SS construction, solid flanged, OE mounting tabs. Bolts up to stock, or aftermarket J-Pipes as well as exhausts.

Pre-order now at http://www.acuratlparts.com/product.php?pid=18
Limited batches, ETA: 1-month from today.
Here she is.

Make note of the tabs and screws.

Not convinced yet?

Here she is naked. Stay legal-looking! Retains the use of the factory heatshield for both aesthetics, and heat dissipation. It may also be used without it.

2.5" ID, SS construction, solid flanged, OE mounting tabs. Bolts up to stock, or aftermarket J-Pipes as well as exhausts.

Pre-order now at http://www.acuratlparts.com/product.php?pid=18
Limited batches, ETA: 1-month from today.
Originally Posted by xoulu
is the ATLP Hi-Flow Converter also for the 3gtl also? If so i wanna preorder both at same time =)
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94 DC4 RS LSV/Turbo
iTrader: (1)
Joined: Jul 2007
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From: New York City | Stuck in Traffic
OH SHIT... when I thought this thing up and discussed it with mike... I HAD NO IDEA HE WOULD ACTUALLY DO IT.... WOW... this thing looks sooooooooo friggin hidden
wait till kennedy sees this....
wait till kennedy sees this....
Originally Posted by stillhere153
OH SHIT... when I thought this thing up and discussed it with mike... I HAD NO IDEA HE WOULD ACTUALLY DO IT.... WOW... this thing looks sooooooooo friggin hidden
wait till kennedy sees this....
wait till kennedy sees this....

I may do it though.
I have, and plan to keep, my "your" TL-S primaries.
It's a little to pricey though. $150 for a piece of pipe and 2 flanges...
The Megan pipe is full polish, and has a resonator baffle in it... Much more complex than this, looks like an aftermarket high flow cat, and costs $80 delivered.
I'd buy this for $65... but likely not for $150
94 DC4 RS LSV/Turbo
iTrader: (1)
Joined: Jul 2007
Posts: 11,734
Likes: 12
From: New York City | Stuck in Traffic
^agree with the price... mike?
I would've liked for this straight piped section to have been optionally added to the jpipe :-? and voted as such when mike was in the "feeler thread" process... that is where mike and I spoke of the visual inspection cheat...
I for one would've preffered to pay $450 for the jpipe with this extension already built in... sadly that isn't the case
I do believe this is more designed for those fellas who require this to pass a visual inspection
kennedy:
... I was thinking of totally eliminating procats... but honestly they are alive and well, found no substrate detirioration... oh and polished? lol doesn't matter... first couple rainy days cancels that out
ps. mike... this includes the heat shields right? $15
18181-RCA-A00
18182-RCA-A00
I would've liked for this straight piped section to have been optionally added to the jpipe :-? and voted as such when mike was in the "feeler thread" process... that is where mike and I spoke of the visual inspection cheat...
I for one would've preffered to pay $450 for the jpipe with this extension already built in... sadly that isn't the case
I do believe this is more designed for those fellas who require this to pass a visual inspection
kennedy:
... I was thinking of totally eliminating procats... but honestly they are alive and well, found no substrate detirioration... oh and polished? lol doesn't matter... first couple rainy days cancels that out ps. mike... this includes the heat shields right? $15
18181-RCA-A00
18182-RCA-A00
One quick question, doesn't the stock cat have studs on it? Mike, are you going to include bolts?
I'm a little confused. I searched for 3rd cat deletes and megan pipes and all I find are discussions of none, to little, to unverified gains?
I'm guessing a dyno with this, the j-pipe and the exhaust would be on it's way soon?
I'm guessing a dyno with this, the j-pipe and the exhaust would be on it's way soon?
94 DC4 RS LSV/Turbo
iTrader: (1)
Joined: Jul 2007
Posts: 11,734
Likes: 12
From: New York City | Stuck in Traffic
Originally Posted by aznbo187
Good news! Was able to get a bit of a price break by doubling the quantity.


ok now what is the price of the straightpipe with no heatshield bracket
Originally Posted by I hate cars
I did mine for free and 30 minutes of my time. Not sure why anyone would pay for a pipe...
Originally Posted by jokerunm
Can you put it back together after you gutted it? Or would you have to buy a new cat if you wanted to go back to stock?
Originally Posted by stillhere153

ok now what is the price of the straightpipe with no heatshield bracket
yeah no need for the heatshield bracket

But then again if I need to re-sell the test pipe later on someone else might want the brackets.
People !! dont buy the megan test pipe is a bottleneck with the ATLP j-pipe.
Originally Posted by jokerunm
Can you put it back together after you gutted it? Or would you have to buy a new cat if you wanted to go back to stock?
Originally Posted by jokerunm
Can you put it back together after you gutted it? Or would you have to buy a new cat if you wanted to go back to stock?
People !! dont buy the megan test pipe is a bottleneck with the ATLP j-pipe.

Mike...any discount for us ATLP Jpipe + ATLP exhaust owners?
Time frame will be a little less than a month.
Just installed the race pipe today and snapped a few pictures compared to stock, and how it looks mounted on the car.



I felt gains especially from 3k and up. This is on a stock exhaust, only with the ATLP J-Pipe. I'm sure gains will be even more significant for those who have an exhaust system. Oh and ATLP J-Ppipe + race pipe = light G35 gurgle.
Velocity is a non issue that far back in the exhaust. Everyone keeps ignoring the fact that my car has been smog tested without the third cat and it still passes so why would you ever need to put it back on?
No, backpressure is not an issue with the third cat removed, not even close. Everyone seems to have jumped on the backpressure bandwagon. It's hard to design an exhaust system so good that it has too little backpressure. With a convertor hanging off of each head, you would still have plenty of backpressure even if you cut the exhaust off after the primary convertors.
No, backpressure is not an issue with the third cat removed, not even close. Everyone seems to have jumped on the backpressure bandwagon. It's hard to design an exhaust system so good that it has too little backpressure. With a convertor hanging off of each head, you would still have plenty of backpressure even if you cut the exhaust off after the primary convertors.
It's pretty straight forward, and IMO it was easier than the J-Pipe install. I drove around with it, and didn't notice any difference in smell or any smoke at all. As "I hate cars" said, this shouldn't be a problem for smog.
Joined: Feb 2008
Posts: 4,096
Likes: 414
From: Scarborough, Ontario
Originally Posted by aznbo187
It's pretty straight forward, and IMO it was easier than the J-Pipe install. I drove around with it, and didn't notice any difference in smell or any smoke at all. As "I hate cars" said, this shouldn't be a problem for smog.
I hope this will be as easy as installing a CAI + TB spacers for the first time.. if not a little harder [because in the end that CAI was actually very easy].
Originally Posted by I hate cars
Everyone keeps ignoring the fact that my car has been smog tested without the third cat and it still passes so why would you ever need to put it back on?
1. Want to return to stock to sell the car and don't feel like tricking the buyer.(They might not ever know, but my concious would know.)
2. As I get older I might decide that I want to emit less pollutants and forgo the 2-3 horses.
For either case, it would be nice to know that I could bolt the stock cat right back on without having to spend $200+ to get another one.





