P2R 3inch Cat Back installed
11-10-2008, 11:40 PM
#42
Uses turn signals in my
With all due respect sir, could you please type more clearly? It is sometimes very hard to read some of the stuff you have typed and I am sure other members would appreciate it too. Thanks.
11-11-2008, 08:05 AM
#45
correct me if i'm wrong, but only the midsection is 3"... in which case i wouldn't consider it a 3inch catback. 
but it looks like a clean y-split, but i'd like to see pictures of the transition from cat to 3".
nice numbers. i knew someone would do it.
but it looks like a clean y-split, but i'd like to see pictures of the transition from cat to 3".
nice numbers. i knew someone would do it.
11-11-2008, 09:12 AM
#46
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11-11-2008, 09:55 AM
#48
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11-11-2008, 10:59 AM
#49
actually over on the 3G TL section, there is a 6spd guy who ran some ridiculous 1/4 mile times with a complete 3" catback and very minimal mods.
what a lot of people don't understand about cars in general, is that a properly designed motor and exhaust combo receives almost all of it's back pressure from the headers. the way acura designs with the headers and j-pipe, the cat will provide some back pressure too. and then everything catback tends to make up a very low percentage of back pressure.
Last edited by CleanCL; 11-11-2008 at 11:03 AM.
11-11-2008, 11:05 AM
#50
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it looks like a good design to me. i'm running a complete 2.5" catback and experienced nothing but gains. so i'd have to say it's more than likely a 3" midsection would show benefit.
actually over on the 3G TL section, there is a 6spd guy who ran some ridiculous 1/4 mile times with a complete 3" catback and very minimal mods.
what a lot of people don't understand about cars in general, is that a properly designed motor and exhaust combo receives almost all of it's back pressure from the headers. the way acura designs with the headers and j-pipe, the cat will provide some back pressure too. and then everything catback tends to make up a very low percentage of back pressure.
actually over on the 3G TL section, there is a 6spd guy who ran some ridiculous 1/4 mile times with a complete 3" catback and very minimal mods.
what a lot of people don't understand about cars in general, is that a properly designed motor and exhaust combo receives almost all of it's back pressure from the headers. the way acura designs with the headers and j-pipe, the cat will provide some back pressure too. and then everything catback tends to make up a very low percentage of back pressure.
11-11-2008, 11:29 AM
#52
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11-13-2008, 12:13 PM
#56
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This is a great thread!
After years of forum members getting zero gains from a Catback, it is very encouraging to see NA #'s like CLS6SpeedNupe's!! Realizing of course he is undoubtedly highly modified (all available bolt-ons, A/F tuner, P&P?) and probably a 3.5 conversion.
My question is what size Magnaflow resonator are people running? I'm not sure if I should go with the 14", 18", or 22"? Not really feeling straight pipes.
Thanks!
After years of forum members getting zero gains from a Catback, it is very encouraging to see NA #'s like CLS6SpeedNupe's!! Realizing of course he is undoubtedly highly modified (all available bolt-ons, A/F tuner, P&P?) and probably a 3.5 conversion.
My question is what size Magnaflow resonator are people running? I'm not sure if I should go with the 14", 18", or 22"? Not really feeling straight pipes.
Thanks!
11-13-2008, 12:19 PM
#57
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yea I have to get a resonator, it sounds good and all but when im chilling and driving its louder than I want. The #1 thing on my list to get right now though is one of the o2 sensor things for the cat that stops your from throwing CELs because even before the cat back my car has been constantly throwing code p420 for the high flow cat and its been killing my gas mileage.
11-13-2008, 12:20 PM
#58
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I want to go the track to tomorrow if this rain out here clears but I need some better wheels and sticky tires because with all this TQ i know I wont run THE BEST times the car should be running with its power
11-13-2008, 02:25 PM
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11-14-2008, 12:43 PM
#65
MP90 uninstalled
http://www.allmagnaflow.com/product.php?productid=453
Look here. I bought one there. I found it as low as 79.99. I put the 24in 2.5 in/out on mine but I see you only need 3". It made a night and day diff. Back to stock sound but a little more bass. I have the same setup you do but mine is 2.5 to dual 2.25. Sounded horrible without. No rasp period! You might want to try the 18" in 3". It may do wonders for you and keep a bit more bass. These are the best resonators I have come across.
Look here. I bought one there. I found it as low as 79.99. I put the 24in 2.5 in/out on mine but I see you only need 3". It made a night and day diff. Back to stock sound but a little more bass. I have the same setup you do but mine is 2.5 to dual 2.25. Sounded horrible without. No rasp period! You might want to try the 18" in 3". It may do wonders for you and keep a bit more bass. These are the best resonators I have come across.
11-14-2008, 03:02 PM
#69
MP90 uninstalled
when I said bass I did not mean ressonance nor ricer sound in any way. Maybe the 30" is what is needed with the 3" but with the 24" 2.5" it is quiet as stock and the riciest of riceboys would never be able to tell it wasnt stock without looking at it. Too bad there is not a 3"x24" option. I agree, its an Acura, keep it that way.
11-14-2008, 08:41 PM
#72
MP90 uninstalled
I don’t think they cause any restriction. The design of the resonator is essentially what you have there now. There is a 3" completely unrestricted piece of pipe through the middle of the muffler. The difference is that the 3" piece of pipe is perforated and the packing is wrapped around the perforations on the outside of the pipe and that is encased in the muffler housing. There are cut away designs on the Magnaflow website. I looked through mine and it was just like a piece of 2.5” pipe except for the smooth perforations from the inside. Call Magnaflow and speak with an engineer. Sound waves are canceled without the use of restriction in their design from what I understand. I am no exhaust expert. What I can tell you with some degree of certainty is that it works damn well and there was no loss of power on my car. Could be the infamous butt dyno acting up again but I may have gained a bit of power. The challenge was getting the 6”er under the car. It hangs down a bit but I have not hit it with anything yet. If you look at the car from the side and kneel down you can see the resonator. If I ran over something large enough it would compromise the resonator.
This is a 24” overall 3”x6” round polished. It’s just like mine but in the 3” pipe. I found it for $86 on other sites. Find what you want on the Magnaflow site then google “Magnaflow (and the part #)”. All Magnaflow products can be had for half retail.
http://www.magnaflow.com/02product/s...e=main&id=7847
Check out this 3” in dual 2.5” out 6” round resonator also.
http://www.magnaflow.com/02product/s...e=main&id=7850
This is a 24” overall 3”x6” round polished. It’s just like mine but in the 3” pipe. I found it for $86 on other sites. Find what you want on the Magnaflow site then google “Magnaflow (and the part #)”. All Magnaflow products can be had for half retail.
http://www.magnaflow.com/02product/s...e=main&id=7847
Check out this 3” in dual 2.5” out 6” round resonator also.
http://www.magnaflow.com/02product/s...e=main&id=7850
11-14-2008, 08:52 PM
#73
MP90 uninstalled
I was wrong. They do make a 3" through 6"x24". I would highly recomend you try it. It is the one listed in the post above. My system resonated like hell before I put the Magnaflow resonator on. Keep in mind that resonance was with some knock off brand 4" 14" resonator.
11-15-2008, 03:45 AM
#75
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11-19-2008, 12:45 PM
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I trying to be the first NA CL or TL to cross 300whp. I think all I need right now is a TB spacer and a tune and I can do it. Maybe even just the tune will do it.
11-19-2008, 03:47 PM
#77
MP90 uninstalled
TB spacer will not do anything special. You need to remove the coolant flow through hoses on the TB and connect them together so the hot coolant does not flow through the TB. Honda did this to prevent ice from forming in the TB during very cold weather. The TB spacer is intended to stop heat from the coolant warming the TB from soaking the UIM. Removing and looping the coolant flow through has the same effect with no need to remove the TB. I do not think there are any gains air flow wise from the TB spacer. This is what I did to mine.
11-19-2008, 04:20 PM
#78
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TB spacer will not do anything special. You need to remove the coolant flow through hoses on the TB and connect them together so the hot coolant does not flow through the TB. Honda did this to prevent ice from forming in the TB during very cold weather. The TB spacer is intended to stop heat from the coolant warming the TB from soaking the UIM. Removing and looping the coolant flow through has the same effect with no need to remove the TB. I do not think there are any gains air flow wise from the TB spacer. This is what I did to mine.
11-19-2008, 08:43 PM
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11-19-2008, 09:40 PM
#80
TB spacer will not do anything special. You need to remove the coolant flow through hoses on the TB and connect them together so the hot coolant does not flow through the TB. Honda did this to prevent ice from forming in the TB during very cold weather. The TB spacer is intended to stop heat from the coolant warming the TB from soaking the UIM. Removing and looping the coolant flow through has the same effect with no need to remove the TB. I do not think there are any gains air flow wise from the TB spacer. This is what I did to mine.
a couple other small mods to do... EGR removal (removes hot exhaust air from intake). and i think you should try out a larger intake manifold spacer like this.
and here's a look at an egr block off.
PM me if you're interested, i have both for sale.