Hey,
I've had the CLS for a little under a year, and I have been looking into exhaust for it. I hear everyone talking about the comptech exhaust. I understand that if you go from the catback you can gain some hp, but are just the axleback mufflers really going to do anything for you, except add noise?? I tried looking on the FAQ section, but no luck. Let me know, I can't see spending that much on just mufflers. Thx.

 

Well the axleback give 2-3 hp while complete catback is 5 hp... The aftermarket exhaust on our cars are primary for sound...

 

Is the additional sound that noticable? I would like to make my car have more of a growl instead of being super quiet.

 

Its all in your head, Don't waste your money on headers, intake, exhaust. Save your money and get a Supercharger or more preferbly a custom turbo. Do the big shit first, you'll understand why in the end.

 

The guy asked about exhaust, not about making his car a beast and spending 5K+

Headers are the best bang for the buck. and if Standout ever decides to get a Supercharger the open exhaust is a good idea... the stock exhaust flows pretty well.. but the theory behind Forced induction (Supercharger/TURBO) is jamming more air in and getting it out as quick as possible... so the open flow is better for later on down road if Standout wishes to get the charger/turbo..

Yes the Comptech exhausts are louder and have a growl to them, but they also have a drone to them when cruising at 60 MPH in upper gear.


I love mine.

 

check out the greddy evo. they all give similar gains. the greddys are not that loud but has a nice deep tone and its cheaper. but if u want the more conservative look i guess comptech or apexi might be the way to go since greddy evo's have huge ass looking rocket launchers.

 

I had the full comptech catback and it was too loud for my taste so I left the b-pipe on and put the stock mufflers on and it's perfect for me...

Comptech Axle Back Group Buy

 

Well I just bought a complete comptech catback and had it installed yesterday... I love the deeper tone, and growl.. Its not to loud nor annoying.. Its just what I wanted.... Now for the amount of money spent, does it really benefit me performance wise no... but I knew that going into the purchase....


I really dont know where you got your info on headers, intake and exhaust being a waste....

headers = 28-30 whp (one of the best mods for the bucks)
intake = 10-12 hp
axleback = 2-3 hp
catback= 5 hp

Yes the SC and turbo application give more power but you need to have the standard application before I would jump directly to them... Catback Exhaust will help the car breathe better, and no headers.. come on...
just my

 

whats the deal with the HKS exhaust on REKLESART's CL-s is that full exh. or just hi-power mufflers from hks? also, are there any clips of greddy evo on cl-s? thx.

 

Jonesi wants a sleeper...

Standout, I will take some pictures of my set-up tomorrow... show you what I did to the B-pipe... it blinds people at night...

 

If you seen the clip with mattg car, its got the greddy exhaust... mrsteve did a video clip in which i believe the intro was with mattg car...

for those with exhaust questions here are some previous post which helped me decide...

http://www.acura-cl.com/forums/showt...3&page=3&pp=25

https://acurazine.com/forums/showthr...ght=mattg+evo2

Good luck eh.. and once my other toys are installed this weekend, will be posting pics as well...

 

no need to go with the b pipe unless u are running f/i, i just got the mufflers and i love em...i clean em up more than i do my car

 

any working vids of greddy evo2?

 

Thx guys for all the info, I appreciate it. I used to have 97 Max with the Stillen muffler and intake and loved how it sounded. I have the AEM cold air on the CLS now, so I think the next mod is to do the exhaust. HP gain will be minimal, but it should sound sweet. Thx again.

 

Smitty you got me guessing on what you have done... awaiting your pics...

hey darrinb what do you use for the shine?? Any luck in you coming to the toronto meet??

 

Dynoed mufflers 4 HP dynoed b-pipe 3. HP 3.8 torque but when you do headers and in take it add up to HP 43 torque 10.02 dynoed I am having my car dynoed today after thermoblock will be installed.
I stated at 194.2 HP and 185.7 torque waned up at 237.1 Hp 195.9 Torque now lets see whats next

 

Johntypes, what mufflers do you have..comptech?? The way I see it, mufflers are mufflers whether it says comptech or no name. Catback systems are different, since you are changing all the pipes to allow better air flow. By the time it reaches the mufflers, its already on the way out.

 

Any gains 5hp or less can't be proven repeatedly. Dyno error and differences, differences in ambient conditions, and differences in coolant temperature, IAT, etc.

 

I can verify this.. His B-Pipe shines like and and more

 

My point is this, It sounds like he is just starting out. We have all been there before. We've bought mod after mod trying to get a little more horsepower. But after all was done we were halfway to a turbo/ supercharger. Especially for that Comptech stuff What is it a 1k for headers,1k for exhaust and 200+ for the Ice Box. He might as well save up and get that Comptech SC. A SC CL-S will beat an I/H/E EVERYTIME.

 

 

I have the axelbacks too, and love the sound, its basically all on the low rpm range where you hear it. sounds really good in an enclosed area. I love hearing it when i take it to the dealer and they start it up inside the service area. It has a real bass to it, so its not necessarily loud, but it travels. much better than the high pitched exhausts i hear everyday.

 

yes i have comptech

 

Smitty's car = cleanest car on AcuraZINE. PERIOD.

 

she will be getting her baking soda and high pressure steam cleaning treatment to the underbody next week..

 

Shiniest... That's for sure...


There is a Group Buy that just opened for the Axle Backs...

Comptech Axle Back Exhaust Group Buy

 

... aww now.. come on... I think my car is dirty...

 

Fuck that, it puts my car to shame sitting next to it...

 

Do not believe the "hype" put out by the manufacturers of after market mufflers, etc. The only true test is to dyno before and after installations. I am not certain of the impact on hp and torque with the rather small cube Acura V6, but on my 350 cube V8's the difference
made by going to a 3" cat back exhaust was an increase in 1/4 trap mph: one car gained 3 mph and the other 2 mph. Headers helped with low end torque with the iron block V8 going up to 485 ft lbs. Headers do make a certain amount of internal noise now just as they
did back in the early days of muscle cars. It is just the exhaust gases rushing to get past the twists and turns of the header metal, which is usually much thinner than an oem exhaust manifold.

 

If you have Forced induction, all you need is one of these... but if you want to have some fun and lose low end torque go for it....


THE DUMP

pay attention to post 208

 

what do you use for the shine smitty???

 

damn that looks great smitty

 

I wet sanded the stainless B-pipe before I installed it...

then the mufflers inthis thread were Jonesi's..
https://acurazine.com/forums/showthread.php?t=140191

.. he then took them back, and I bought brand new CT exhausts... but I did not wet sand the new mufflers.. I just polished the hell out of them with my dremel tool and bom's away.

 

The gains from any mods on a v8 or v6 engines will be different. From my understanding it seems like the smaller your engine is (such as 4 cylinders), the more hp you get from I/H/E as opposed to 8 cylinders since they are relatively free flowing already.

 

koolmonkey i am not sure about your statement about 4 bangers vs 8 cyl. with respect to air flow. I think its the other way around, these v8 are really restricted, and exhaust will add like 15-25 hp to a mustang.

 

Other way around. Mustangs, etc will pick up 15-20 horsepower by just swaping exhaust. An RSX-S might gain 4-5 horsepower.

 

It is generally true that big V8's and some V6's may benefit from freerer flowing exhausts,
it is also most unusal to pick up hp gains of 15 to 20 or more! That is the makers hype! Also, "seat of the pants" trials are hardly a way to determine if an actual hp increase has taken place with a set of headers, or more open exhaust. I have experienced this seat of the pants thing and now honesly believe a lot of it is "in the head". In other words, you want to beleive what the mfg states, a 25 hp gain, etc! Great for bench racing though. Additional "sound" hardly translates to more power, other than perhaps 3 or 4 hp, and that is barely noticable unless you dyno before and after.

 

Yea, but the point is, I/H/E allows for greater use of the S/C. Why not put these parts on in the meantime to get the power out of the engine anyway?

 

You'll totally choke things up w/o at least headers on the car if you do the S/C'er.

I've run against an automatic S/C'ed CL-S with stock exhaust at the track and my MPH is consistantly 2-3 MPH faster than him. He also was running 17" SSRs (13lbs each) and was getting better 60' times than me. I'm on stock wheels and my car is noticably faster with the cat-back exhaust.

 

When I was N/A I stayed even with a SC CL-S with stock exhaust.