High flow cat MOD?
#1
TL ftw!
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Join Date: May 2004
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High flow cat MOD?
Will this make your exhaust system sound better and more gain or its just for the sound? I'm watching this right now guys.
**mod edit - no links to eBay**
It's pretty cheap.
**mod edit - no links to eBay**
It's pretty cheap.
#3
Senior Moderator
I need to do this one of these days, as im still running my original 220k TL-P cat
I bet i can free up Abunch more ponies doint that and replacing my puny 2 inch pipe
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#4
Not Asian
Originally Posted by Rpappi
power and sound. greenmachine did his recently he said there was a hefty amount of torque gain.
#5
Pro
Originally Posted by Rpappi
power and sound. greenmachine did his recently he said there was a hefty amount of torque gain.
#6
Senior Moderator
Originally Posted by bonknhead
Hey Rpappi, I tried a search for posts by greenmachine using the keywords of "magnaflow" or "catalytic" or "converter" but couldn't find anything. Did he post his mod under something else?
#7
Pro
Originally Posted by fsttyms1
In the CL forum
Anyone have any experience with the Magnaflow one ^ ?
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#8
Senior Moderator
Im sure they are all very similar. If im not mistaken the RT cat can be had in a direct bolt on?? doesnt need to be welded?
#10
Former Sponsor
iTrader: (1)
To the OP that is a Magnaflow universal cat. You will have to have flanges welded in and those are hard to obtain. I have search everywhere for those Honda oblong 3 bolt flanges.
Greenmachine bought the Random Technologies cat which is a high flow bolt on cat. It is also stainless steel w/ a ceramic substrate 300 cell. The Magnaflows tend not to be as high of quailty. In this case it is universal but their bolt on cats have many a time not even come close to fitting. Needless to say I have not been happy w/ their cats.
The Random Tech cat is designed for the TL-P, CL-P but it can work on the Type S. You will need to enlarge the 3 bolt holes on the b-pipe where the cat meets it and you will need to extend the 02 sensor 6".
Greenmachine bought the Random Technologies cat which is a high flow bolt on cat. It is also stainless steel w/ a ceramic substrate 300 cell. The Magnaflows tend not to be as high of quailty. In this case it is universal but their bolt on cats have many a time not even come close to fitting. Needless to say I have not been happy w/ their cats.
The Random Tech cat is designed for the TL-P, CL-P but it can work on the Type S. You will need to enlarge the 3 bolt holes on the b-pipe where the cat meets it and you will need to extend the 02 sensor 6".
#11
Senior Moderator
What is the pipe dia on the RT?
#12
Originally Posted by Excelerate
To the OP that is a Magnaflow universal cat. You will have to have flanges welded in and those are hard to obtain. I have search everywhere for those Honda oblong 3 bolt flanges.
Greenmachine bought the Random Technologies cat which is a high flow bolt on cat. It is also stainless steel w/ a ceramic substrate 300 cell. The Magnaflows tend not to be as high of quailty. In this case it is universal but their bolt on cats have many a time not even come close to fitting. Needless to say I have not been happy w/ their cats.
The Random Tech cat is designed for the TL-P, CL-P but it can work on the Type S. You will need to enlarge the 3 bolt holes on the b-pipe where the cat meets it and you will need to extend the 02 sensor 6".
Greenmachine bought the Random Technologies cat which is a high flow bolt on cat. It is also stainless steel w/ a ceramic substrate 300 cell. The Magnaflows tend not to be as high of quailty. In this case it is universal but their bolt on cats have many a time not even come close to fitting. Needless to say I have not been happy w/ their cats.
The Random Tech cat is designed for the TL-P, CL-P but it can work on the Type S. You will need to enlarge the 3 bolt holes on the b-pipe where the cat meets it and you will need to extend the 02 sensor 6".
To your knowledge are there any dyno's out there , especially from a member?
#13
Burning Brakes
Originally Posted by fsttyms1
I need to do this one of these days, as im still running my original 220k TL-P cat
I bet i can free up Abunch more ponies doint that and replacing my puny 2 inch pipe ![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
High flow cat = More HP & Less MPG?
#16
Not Asian
Originally Posted by fsttyms1
What is the pipe dia on the RT?
#17
Senior Moderator
Originally Posted by Papa_Sean
High flow cat = More HP & Less MPG?
#18
Former Sponsor
iTrader: (1)
Originally Posted by phipark
fsttyms1, the inlet and outlet are 2" in diameter. RT always has somewhat smaller inlet and outlets but let me tell you they flow well. When I put one on my 99 Accord turbo i4 the boost increased 4-5psi. I couldn't believe how well it flowed over stock. The core is obviously larger.
#19
Senior Moderator
I will be looking into one of these this winter!
#22
Senior Moderator
Originally Posted by sbuswell
what is involved in extending the O2 sensor? I will be getting a RT Cat when I get my taxes right along with a new TB, IAC valve and a rebuilt tranny.
#25
Senior Moderator
I think its 4 wires, You can buy extenders online. But i would just cut solder and heat shrink to seal the wire.
http://www.casperselectronics.com/Me...ory_Code=honda
http://www.casperselectronics.com/Me...ory_Code=honda
#27
Senior Moderator
one question guys, can the TL-P cat be fitted on to the CL? If so, then a buddy can use some RT cats for his CL.
#28
Senior Moderator
Originally Posted by csmeance
one question guys, can the TL-P cat be fitted on to the CL? If so, then a buddy can use some RT cats for his CL.
#29
Senior Moderator
Originally Posted by sbuswell
those extenders look like 100% PNP, looks like it would make it a lot easier than messing with wires on my back under my car. Thanks for the link fsttyms1
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#30
Suzuka Master
iTrader: (4)
Originally Posted by sbuswell
those extenders look like 100% PNP, looks like it would make it a lot easier than messing with wires on my back under my car. Thanks for the link fsttyms1
#31
Senior Moderator
Originally Posted by CleanCL
not for nothing, but why would you be on your back? you need to unscrew the o2 sensor out of the stock cat, and then you can just unplug it and wire it up very easily.
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#32
I need 2 more gears
Join Date: Jun 2004
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Originally Posted by CleanCL
not for nothing, but why would you be on your back? you need to unscrew the o2 sensor out of the stock cat, and then you can just unplug it and wire it up very easily.
I don't have a lift so I would be jacking my car up and then sliding underneath like always. I am not experienced in messing with electical wires too much and would rather not solder on my back. If I had a lift everything would be a lot easier but oh well.
#34
Senior Moderator
Well you would remove the sensor and bring it in the house, so you woldnt be on your back soldering
#36
Senior Moderator
Its just a rubber tube you slide over the wires before you connect them together. Once you soldier them together you slide it over the area and use a lighter or heat gun and it shrinks tight over the area. You can get them at auto parts stores and home depot lowes ect
#38
Suzuka Master
iTrader: (4)
^ yea, i meant unplugging it, but i was getting at the fact that the sensor would be removed entirely for the install so you could solder at your leisure on a work bench. home depot sells everything you need. just make sure you slide the heatshrink tubing over one end of the wire BEFORE you solder, otherwise theres no way to get the tube over the wire.
edit: im an electrical guy, so i have tons of solder, soldering gun, tubing, connectors, etc. if you dont have any of that, its probably cheaper for you to just buy the extenders.
edit: im an electrical guy, so i have tons of solder, soldering gun, tubing, connectors, etc. if you dont have any of that, its probably cheaper for you to just buy the extenders.
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#39
Moderator Alumnus
hehee...sorry guys I don't look in here that often...
The RT cat fits just fine for the TL-P and CL-P, just remember that the o2 sensor wire has to be extended. I didn't feel like chopping it so here's what an exhaust shop did, and they did a great job...(I'll take pics eventually.)
1st, they chopped and downpipe flange back about an an inch and a half then rewelded the flange...
2nd, they chopped the front of the RT flange about an inch...then rewelded...
3rd, they chopped the rear flange off to weld up the 2.5" pipe going to a high flow racing muffler called "Twister" (very need design on the inside of the muffler)
4th, 2.25" pipe came out the rear of the high flow muffler down to the original y-pipe for back pressure...
if you've seen my pics in the CL DEP section you'll notice I had the rear mufflers removed and had 3" chrome pipes installed.
The exhaust is quite loud but I did gain a lot of high end power. AND, NO CEL lights came on with the new RT high flow cat!
There is a nice rumble at idle. I don't think the exhaust sounds ricey at all. It was a lil too loud for Rpappi, but he did like it though.
The RT cat fits just fine for the TL-P and CL-P, just remember that the o2 sensor wire has to be extended. I didn't feel like chopping it so here's what an exhaust shop did, and they did a great job...(I'll take pics eventually.)
1st, they chopped and downpipe flange back about an an inch and a half then rewelded the flange...
2nd, they chopped the front of the RT flange about an inch...then rewelded...
3rd, they chopped the rear flange off to weld up the 2.5" pipe going to a high flow racing muffler called "Twister" (very need design on the inside of the muffler)
4th, 2.25" pipe came out the rear of the high flow muffler down to the original y-pipe for back pressure...
if you've seen my pics in the CL DEP section you'll notice I had the rear mufflers removed and had 3" chrome pipes installed.
The exhaust is quite loud but I did gain a lot of high end power. AND, NO CEL lights came on with the new RT high flow cat!
There is a nice rumble at idle. I don't think the exhaust sounds ricey at all. It was a lil too loud for Rpappi, but he did like it though.