Hi all, i've heard the Comptech Headers increase HP by about 20-30. I know i'ts mostly in the high RPM's, but does it improve the 0-60? I would imagine it would, but by how much?
Is it really worth dropping a grand for something giving you minimal power increase?

 

They are totally worth it. Definitely one of the best mods for the car. My guess is that you would probably drop about .3 to .5 sec. on the 1/4 mile. Almost all of the power is up high (over 4800rpm) where the peak HP of around 30hp at the wheel is gained. You're looking about 15-20hp everywhere else.

If you don't want to drop $1k... buy the OBX headers for ~$400. They are new and the same design as the Comptech. They were also dynoed with a little more power down low!!

http://www.acura-cl.com/forums/showt...threadid=80233

 

The headers are totally worth it. It don't matter much to me whether it is Comptechs or OBX. It is all good..hahahhaa

 

It is very likely that under controlled circumstances like at a track that you would see differences with a stopwatch. On the street it is doubtful that you would see the difference of 15Hp@ 6k RPM.
You still end up in one pipe when you get to the catalytic converter.

Better use of the grand,,,rent a Viper for a few weekends

 

so is there a difference between OBX and Computech, if money is not an issue which would u perefet ppl???? and is it wise to get a biger pipe from the headers on to the mufler?? cause if u get biger headers but then end up going back to a smaller pipe, whats the point, still have same back pressure??

 

Comptech...they've been out for a longer time and have been tested, plus since they're CARB certified, most likely they will pass smog everywhere else since CALI seems to have the stictest emission controls. The CT won't help 0-60 much, but 80mph and up you'll love how they pull on people. Also I don't think you want to go any bigger than a 3inch pipe. Any bigger would only be optimal for force induction systems. The Type S pipes are 2.75 already.

 

Well, since OBX bought Comptech's design.. they should be very similar. Several people over on ACL.com bought them... so I'm probably going to wait until spring time to make a decision. We'll see how they withstand heat from the engine and freezing winter temperatures. If they come through with flying colors... I'll pick them up... if not.. Comptech's all the way!!

 

so no need to change the piping out once u put in headers?? hhmm ok, now im going to get better imporvement on 80 and up, what will the do for the lower speeds as far as performance? and how can u imporve lower end torque and horspower?

 

When it comes to modding you only have two choices really. Either tune the engine for low speed or high speed. Mixxing of the two will actually cause you to lose performance. As far as our low end, there is no real mod to help that out...perhaps a supercharger, but other than that, nothing really. Our cars seemed to be better tuned for higher speed thus the SOHC...and for the obvious reason it is cheaper.

 

I have CT headers on my TL and it makes a world of difference up top. Definitely a must have if you have the $$$.

 

peiqinglong:

do you have a 6speed, nice car btw...

 

hemmm....where can I buy this OBX headers?

 

Thanks, but unfortuantely I did not opt for the 6spd.

 

http://www.acura-cl.com/forums/showt...5&pagenumber=1

 

so am i gonna loose anything if i buy the OBX set??

 

The only thing you'll lose is some ticks off of your 0-60 and 1/4 mile times

 

WHICH ANOTHER WORDS, GET THE HEADERS!!!! OBX/CT ONES. THEY ARE WELL WORTH SPENT.

 

how much time are we talkng here, i mean is it noticible difference, adn am i going to have probs with thease headers down the road since they are cheaper?

 

That is the $400 question....only time will tell.

 

The jury is still out on quality. The people who have them say they are identicle to Comptech's (which makes sense considering OBX bought Comptech's design). The reason they're cheaper is that OBX has less overhead.... no R&D, no CARB compatibility... etc. Comptech absorbed all of that already.

As for difference... everyone who has them says the difference is very noticable.. and the one guy who dynoed them got 35 HP at the wheel with an intake, new plugs, and pulleys.... but he did a baseline run.. so it's all relative.

Check out this topic for your reading pleasure... it should answer all of your questions about build quality.....
http://www.acura-cl.com/forums/showt...ht=OBX+Headers

And this one is a dyno....
http://www.acura-cl.com/forums/showt...threadid=80233

 

link not found, when i click it, sorry for the questions, just my next mod, and dont want to waste money, when u say noticible difference, what are they??? do u know???? and what states have the CARB compatibility regulations??? or were can i look that up,

 

OK.. link is fixed.. both should be fine now.

When I say noticable... I mean ~35hp (peak) to the wheel... that's about 42hp (peak) additional at the crank... meaning ~302 total HP (peak) at the crank..... probably drop 1/2 a second or so off of your 1/4 mile time. 0-60 in the high 5 seconds.... all conditions permitting (traction, temp, etc).... but the potential is there with the additional power.

I believe California is the only state that has CARB certifications....

Honestly.. I'm still curious to see a stock CL-S/TL-S add these and do a before and after dyno. That to me would provide the best evidence of gains.....

 

hhmm ok the numbers u just quoted, those with teh OBX or teh CT, i looked at teh chart, not to smart here, confused the crap out of me. u said 35hp at teh wheels, compared to how much with CT headers??

 

The CTs I believe give only 28whp.

 

no way that OBX can give more to teh wheels then CT, is there?

 

Well there is not enough dynos to trully show an accurate reading for the OBX

 

[QUOTE]Originally posted by juniorbean


Honestly.. I'm still curious to see a stock CL-S/TL-S add these and do a before and after dyno. That to me would provide the best evidence of gains..... [/QUOTe

I agree, unless someone has real tested figures we are taking everyones opinion. Someone who spent $1k is likely to say it is better every time. Having a neighbor who races and builds engines he says no way that I would feel a difference with just headers alone. And a 0-60 time in the mid 5 sec range is virtual reality, headers do nothing for 0-60 times in an engine as high revving as ours. In fact it may make it slower from 0-30 as a result of moving the power curve higher.

 

Rysky007 - headers scavenge out the exhaust better than stock. When that happens more of the air/fuel mixture can get in on the next stoke of the engine, and that is where the added power is coming from. It is not completely due to reduced back pressure. Really good headers have correct lengths such that as each pulse travels down them it "pulls" (by way of a slight vacuum) the next cylinder's gases out as well. That is why headers add power. Four inch systems look cool but slow down the exhaust flow too much, robbing power. IMO what is on our cars after the headers is just about right as some guys are running low 14's.

 

Roadman - you are right.. however, the thing about the OBX headers is that they supposedly give more power down low vs. the Comptech. Definitely not enough to drop the 0-60 to mid 5's (I never said mid 5's).... but potentially enough for high 5's or 6 (Acura advertises the TL-S at 6.28, so it's possible to drop the .28).

Anyway... a bunch of people are ordering them from the CL board.. so hopefully one will do a before and after dyno with a stock car.....

 

BTW.. here's a great write up of someone who just did the install. No dyno yet , but still a good review.....

http://www.acura-cl.com/forums/showt...5&pagenumber=1

 

Juniorbean,

Sorry for the misquote on the 0-60 times. The dyno is nice but does anyone have a before and after (headers) track timed 0-60 result ? Or has anyone driven a headers/no-headers car back to back on the street.

Dropping .28 fron a 0-60 time would be quite a seat in the pants difference in feel and would definately add merit to a $500 headers upgrade.

 

No biggie.. I was more just messing with you!! Only b/c I was careful when I worded times b/c there's no solid proof

Honestly it's very difficult to time 0-60 runs. I don't believe any tracks are really setup for this. I would think you could drop the .28 0-60... but the only real timing test would be 1/4 mile.

BTW... I am in sooo much trouble when I get home tonight b/c I just ordered them. I couldn't resist at $340 shipped... that price is too unbelievable....

 

is the group buy still going on??? on the OBX??

 

I just ordered those bad boyz myself. Like Juniorbean, I'm gonna be in so much trouble when the wife finds out. In fact, in the comments field for the order, I asked them to label the box "baby crib".

But yeah, this price is unbelievable.

I have a stock TL-S, so if someone can recommend a dyno shop in the Houston area, I'll look into a before and after run. Cost is a consideration tho, since the wife will hafta be placated.

eCo
_

 

ok someone please tellme were i go on CL.com to order them i want them bad

 

I just sent you the PM.. however, I figured I'd post here so everyone could see.

Just go right to www.ssautochrome.com

They are the headers on the main page. They are labeled as the Accord V6 headers.. but these are them. They are the Sept./Oct. special... $340 shipped....

The exact link on the page is:


SEPT-OCTOBER SPECIAL
ACCORD V6 1998 - 2002 RACE HEADERS

 

DAMN I want those headers so bad now..!!!

 

$340 delivered is a great deal. These guys must be selling a boatload at this price. Let us know how it works out

 

Want want them as well but my wife will kill me no question about ti

-Norcalsguy

 

- bump -

Still looking for a good Houston Dyno shop. I'm on the north side.

TIA,
eCo