jimcol711

i put a post in the sactioned racing formum with the specifics of my times but as you can see by my sig i have no real performance mods although i do have the resonator box taken out, if that makes any difference at all. In any case, i was running pretty consistant 14.8 @ 95.x mph with a stock CL-S, im pretty pleased with that...the interesting thing however is that i was down there with a fellow A-CL'er who im sure will be posting his stuff at some point here but in any case, he has Headers, AEM intake, and AEM pullies and he was running 14.9!.....he pulled out a few 14.7x as the night went on but his typical time was a 14.9....the night was about 50-60 degrees and no wind..nice night. and after the first few runs where i beat him, we checked his actuator, and it was functioning properly....do any of you guys have ANY CLUE why i would be beating his car? and more importantly, why he is running slower times??? he has ran a 14.6x with just the intake and pullies...and the headers apparently killed his time....hmm, anyone have any thoughts or ideas? im sure HE will love to hear them as well....this all makes me wonder if the headers are even a good investment, i sure would be pissed if i spend 1200 and got SLOWER times!!

jimcol711

anyone have any clue, or what???

Crazy Bimmer

Who has the headers on his CLS? Someone on this board?
Maybe his actuator isnt working right... he should get it checked out.

jimcol711

the guys SN here is Roell....he has a silver 01 with headers, intake, pulleys....his actuator WAS WORKING as we checked it after a few runs....

BlueCLS6

May just be one of those days. Also vehicle weights may be different (how much gas, spare tire?, stereo?, aftermarket wheels?)... lots of factors. Also, you may just have a better engine from the factory. How long has he had the headers?

Doom878

Method of launch? What RPM launched at? Tire pressure? Shifting? So many variables. Sounds like you got a freak.

jimcol711

i had my spare tire/jack out, i have factory wheels and tires, i torquw braked to 2000 rpm before the launch, i gate shifted and i had 38 psi in the front tires....Brian with the CL-S with headers had lower tire pressure, but every other variable was the exact same!! he is pretty dissapointed in the runs, i would be too, if i get headers and intake i want to see 14.3

jimcol711

also, we both had less than a 1/4 tank gas

Crazy Bimmer

this is weird... hmm maybe he has a leak in the header? I dunno...

BIGPOPPA21

ask zapata we were beating his times at englishtown, and he has headers

FDao

How long has he had the headers on? I had the same problem initially with the headers as well. 1 week after the headers were installed, I was having extremely difficult times trying to break into the 14's. The best I could do was 15.0. When I was stock, that was also my best time ! 2 weeks later, I tried again and this time I was running consistent 14.9's, with a best of 14.88. Weather was essentially the same. About 2 weeks ago, I ran again and now I'm consistently at 14.8's. I am hoping 14.6-14.7 with the addition of SSR Type-C rims.

Prior to the installation of the headers, I looked inside the tubes of the headers and noted that there were sharp, unfinished edges where the primaries met to form the secondaries. I suspect this may be the cause of my disappointing times. Did your friend have the same findings?

TypeSKid

Damn, that is definitely some weird shit.

Of all the stock Type S's I've raced, NONE have EVER beaten me.
:o

Weird.

EricL

1. I may have missed something, but is he running stock or different tires and wheels. If the rims are heavy, it could be a pig.

2. If is car was "filled-up" with junk, had a full tank, and he is BIG, it sure wouldn't help.

3. If the transmission is on the way out (I'm not saying it is... ok), it could make for slow times.

4. As for the headers: leaks are really bad. The reflected pulses that arrive (assuming a nice-tight header with no leaks) helps SUCK the exhaust gas out of the combustion chamber. This also assists the intake flow (during high overlap == VTEC operation). Whenever I had leaks in my POS equal-length mild-steel headers (on a previous car), I got little puffing sounds and a lot of power loss (at all RPMs).


The headers make my car fly, not slow it down… so, if some remedial steps don’t help out, it should get a look-over. I would expect the ECU to adjust to the headers, but perhaps this is a good time to do the old “pull the fuse” to the PCM-FI/ECU trick to try and reset the system.

I would be “nasty” to find-out that the addition of the headers “coincided” with some other bad happening…

(BTW, I have my doubts about a few sharp edges messing-up the power that badly. It sure wouldn’t help, but something isn’t Kosher…)

Roell

hey all. I am the guy with the not so great times. Here are some of my ideas.

1. My check engine light is on, and was when I made the runs so that could have an effect on things.

2. Header leak, obviously a possibility.

3. The stock CL and I raced on the street about a month ago. My car pulled on him right away. But, my engine light was not on.

So, I guess I'll just have to go back to the track and see if it was just a one-time things.

A couple of notes. My 14.9 runs were with full enterior, whereas the 14.7 was with no spare and jack.

Oh well

Brian

cls'01

Is there a way to tell just by looking at the Headers that there is a leak? Can you smell it? Or do you just have to take it back to the shop and let the "Experts" do the testing?

Zapata

Roell,
What kind of tires do you have?


I've had the exact same thing happen. SLower times since i got the headers done. I've only been there twice since i've had them on. Weather has been so shitty it's not worth it to me to go right now. I'll wait till it cools down.

I suspect that my problem is with traction. I can't stomp on the gas. I'll just spin. Last time i stomped--i was in SS 1 VSA off--and the car shifted automatically into 2!! I had to lay off the throttle to gain traction and then the tranny shifted back into 1st.


I'm running 40 PSI in my Michelin Pilot Sport A/S. If i lower the pressure i loose MPH in the top end. I have yet to jack to pressure up to about 45....the max is 51 on the tire. I want to see if an increase in tire pressure would help me gain some time or atleast MPH. If i gain the MPH back then i know that it's traction for sure. We'll see

I've reset my ECU because a few of the board members believed i was running a bit lean before. Although running too rich will kill power as well.

Another board member and I have done a visual inspection of the headers and there don't seem to be any leaks but who knows.

3.2cl-s

CEL is not a good thing, you could be missfiring, or very possible is the header leak or the CEL could just be from not properly installing your intake, like a loose tube or something.

What was your 60ft time, what was your friends? You prob. shouldn't have lowered your tire pressure either, which does hurt you in the top end.

FDao

If your CEL came on, try checking your O2 sensor where it's connected to the headers.

EricL

If it is "bad enough" you can sometimes hear of feel "puffing" around the exhaust gaskets (with no assistance -- just good ears)... However...

There is some "cheap-o" stuff that I use from time-to-time and it just a long length of 1/4" (or smaller) hose with a metal tube used as a "stethoscope" (metal tube is optional -- I just have some small metal tubing left around from a project).

Here is one of many (you can make your own or get them for as little as $9.95):



The one from Griot's is $16.95...


http://www.griotsgarage.com/search.j...xt=stethoscope

OUTRAGEOUS CL TYPE S

what is an actuator post pics please

EricL

AND



AND

Doom878

What is that? Is that a Type S thing?

FDao

Yup, I believe so. Unless I am wrong, that's how the CL-S gets its 35 HP advantage over the CL-P, among other things such as different cams, bigger TB, higher flowing exhaust, and higher flowing filter. I think that's it.

Scooter

im surprised noone has really mentioned this yet...

check yer mixture!!!!!

Zapata's mixture sucked when he first raced in Englishtown since they were brand spankin new

this issue has been raised a few times on the boards, and the range of opinions varies greatly...1 of those that sticks out is since headers are not utilized fully by the time u reach the 1/4 mile mark, u're not gonna see a significant improvement in times...there have been more than a few reports of headers causing slower times tho