srehmat02

My mods are: XS headers, AEM CAI
His mods are: AEM CAI, Comptech Headers, and Comptech Exhaust

We went from a first gear roll of around 20 roll to about 100. He pulled a little over a car on me by 100. I redlined every gear, drove it like I stole it, I don't understand why I am getting raped by an 01 CL-S with 130k miles.

What are the main causes of a power loss like this? The car seems to be running fine, just isn't pulling as hard as it should, his feels much more torquey, better throttle response. I get a wierd burning smell after I really romp on it, if that means anything and I was throwing a code P0172 (running rich), which strangely disappered a week ago. Input needed. Thanks guys.

cbusAcuracls

hmm...all I could say is every car is made different. Some a little faster than others. Even 01 Auto's I guess

But in all seriousness...if you car was throwing codes something is wrong even if they just went away. Sounds like your in serious need for a tune up.
Whens the last time you went in for scheduled maint?

srehmat02

Just bought the car, 3 weeks ago, 80k miles on it. I will be taking it for a tune-up this week, I guess it could be ignition related.

Allout

You say you have a burning smell? Could be a slipping clutch too. Also check the operaton of your IMRC.

srehmat02

The clutch feels fine, but I will check operation of the IMRC now. It is supposed to open up after 4100 RPM correct?

aqua1stgen

yah you gotta put clutch slippage into the race. also comptech, even though xs models after them, might have given him an extra 5-10 horses, which couldn't have hurt.

gurot1

Did you feel/hear VTEC kick in? Either he's got a highly performing engine or something on your car may not be working correctly. Even if the comptech was giving him 5-10HP more (from the dynos I don't think there is supposed to be difference b/w comptech and xs headers), the A/T should not be pulling on you. The exhaust doesn't add much power either maybe a few HP. The 6spd is half a sec quicker to 60 stock to stock. Even if the header exhaust combo was giving him 15HP more than your mods, that won't make up that 0.5 sec advantage of the 6spd. The other variable is gear shifting. If you mis-shifted at any point, that can chew up valuable time/speed as well.

CleanCL

iTrader: (4)

IMRC

btw - unless he physically had the car in 1st gear, theres no other way to hold 1st in the auto, so chances are he was actually starting 2nd gear at 20 mph

fuzzy02CLS

iTrader: (2)

Sorry you give CT too much credit. 5-10 HP? No way! Maybe 5 max. I've had both.

Your IMRC or something else is wrong with your car.

gurot1

I was thinking the same thing

aznboi2424

iTrader: (10)

he could have shifted all the way down to the bottom where it says 1 < > 2 and that way he could hold it there, then after first, shift it to SS mode.

hemhaw

srehmat02

IMRC seems to be functioning properly.. I revved it up past 4k and saw the valve opening
I am going to get a tune up, get my clutch inspected, and get it compression tested.
Any other ideas?
Thanks for all the input guys

Allout

How's your oil level? Do you hear VTEC changeover? Low oil pressure can prevent the cam from switching over.

Also, take a look at post #7 in this thread to check if your clutch is toast:
https://acurazine.com/forums/showthr...lipping+clutch

Sonor Kid 2

His Comptech headers and exhaust set up give him a bit of an advantage and even though he has an automatic, from a roll at 20 I'm not surprised he was able to beat you.
The auto and 6 speed are not night and day on the dyno and like mentioned ealier, all cars are different.
My auto dynoed 210 consistently when stock which was on the higher side, I saw others as low as 195 on the same dyno. Most of the 6 speeds I've seen on the dyno were 215 to 220, so the differences can be small depending on the car and the mods.
My auto has pulled 252 on the dyno with my mods and have run many 14.2's to 14.3's at the track. I have acyually taken a few 6 speed CL's myself, as well as a few G35's and 350 Z's.

srehmat02

Just changed oil 3 days ago and VTEC crossover is definately heard. After reading the thread about the clutch, I am definately leaning towards it. I always smell something burning after driving hard, must be my clutch.

poisx7

iTrader: (1)

wow dynoed @ 252hp with just a headers and exhauts, Intake em.... thats prettypretty !! i dont think the spark plug choice and unichip makes much of a diff especially if nt FI. Thatz a hell of a freak.
WHt kinda off dyno are we talking abt ? and is this on the stock transmission or the replaced reflashed one , just curious .????????????

fuzzy02CLS

iTrader: (2)

Yes & was it std or SAE? Dyno done in 2nd or 3rd? 3rd is the correct gear to dyno the auto.

srehmat02

I dont think its the clutch anymore, I tried that whole crusing at 25-30mph dropping it to 6th and gunning it. RPMs rose very slowly, no irratic rising at all, like the clutch was fine. Very confused here..

srehmat02

If it helps, sometimes the car has a rough idle. RPMs stay constant, but I can hear the engine struggling a little. Feels like its going in and out every 2-3 seconds and my friend says I shoot a little black smoke out at redline shifts.

poisx7

iTrader: (1)

try cleaning out ur fuel lines and ur injectors.
check ur fuel pressure reg, lines etc i just had those replaced .
how is ur mpg ? Is it decent, if so may be the car is tired

srehmat02

Its just funny because, I bashed and bashed on my friends auto CL-S ever since he got it and now I get my ass whooped by him.. guess i had it coming..

srehmat02

Gas mileage isn't horrible.. I haven't owned the car long enough to know whats bad.. I will measure it on my next tank

Sonor Kid 2

I've done numerous pulls with each mod from square one on the Dynojet. Like I stated ealier, I was consistently pulling 210 stock on multiple occasions before doing any mods, which surprised me as well.
I also had numerous runs in the high 240's, 252 being the highest I was able to pull.
The pullies and unichip helped more than I thought they would, I don't remember the exact number, I would have to go in my files and check the dyno slips.

fuzzy02CLS

iTrader: (2)

I'll be the bad guy & say it.....................Maybe you just suck at using the 6MT in the CLS.
It is a different setup then most manuals out there & takes some getting used to.

srehmat02

Well you're right I can't launch it properly for shit, but from a roll.. not much skill involved.. other than some quick shifting.
Anyway, I just came back from Autozone, plugged in an OBDII scanner and found out I am actually throwing two codes: P0170 and P0172, but why isn't my check engine light on?
Says I am running rich (fuel bank 1)

JohnBlayz142

Agreed. The six speed is only faster if you know how to drive it. Most people don't know how to drive a manual nearly as good as the people who test the cars out and manage to get the low times.

I think a big misconception on this board is that if you have a 6MT you are going to smoke a 5AT. There's plenty of variables involved.

poisx7

iTrader: (1)

dont mean to change direction or hijck, but Can anyone speak on the benefits of the unichip on a NA, i thought some said 1- 2 hp which was nt significant unless the car was FI then it could be tuned towards a more agressive band.
Anybody compliment or dispute the rewards of having a UNICHIP on the 2nd gens.
(or shud i just start a new thread)

Garkon

Yeah, if you are not shifting fast enough, his auto may be shifting faster than you. It may not seem like much, but .3 sec 1-2, .3 sec 2-3, .3 sec 3-4 adds up to almost a whole second, now your .5 sec advantage 0-60 is negative .5 sec.

edit whoa, didn't realize this had a second page, late to the party.

srehmat02

Well I took it to a mechanic and he told me its a fuel pressure problem. I think my fuel pressure regulator has gone bad. I am taking it to Acura on Thursday and see what they say.

srehmat02

UPDATE:
When installing my Greddy EVOII, I realized the previous owner of my car put a bunch of different sized pipes to make my exhaust. Only stock parts were the mufflers.

One part of it bottlenecked to 1.5 inches The mechanic reffered to it as a "mickey mouse" welding job.

Now it pulls like a bat outta hell. Almost feels the way my old SRT felt when I first got it.

So we ran it again same first gear roll to 100ish. I redlined every gear, hit every perfect shift and the outcome was a little different.

I had him by 3 car lengths

We ran it 3 times and everytime I came out on top. I love my CL again.

6-speed FTW!

LIPPSTUH

iTrader: (2)

VERY nice, good job on solving your problem. i give you props

Viscous

Congrats, thats how it should be. 5AT's with the same mods should always get trounced.

previous owner =

Jabodacious

Redlining every gear is not always the best way to go. A few dyno pulls will show you your torque curve. Often times the torque will drop well before the redline. You could be costing yourself speed by winding each gear out too long. Stay in that torque ban and maybe you'll get 4-5 lengths on him next time.

In the CL's the 6-speed should be faster because you have more control of the shift points related to the torque curve.

srehmat02

I think I know what you mean, I can feel that shifting at 6800 feels the same as shifting at 7200, it does feel like the torque drops off. What rpm do you suggest I shift at? I will be getting the car dyno tuned after I get my supercharger w/ HBP in, shooting for AllOut's numbers. Just came in this weekend.. can't wait.

Sooo.. who wants to help with the install? lol

Garkon

dude, good for you. Nice update, i remember reading this a few months ago thinking "if i got a 6 spd and it was slower than an auto i'd be pissed". I was thinking your car was a dog or something. Glad it worked out all good for ya!

BTW totally jealous of the SC, good luck w/ that. Let us know how it goes.

black label

A burnt clutch has a very similar smell to rotten eggs. It doesn't really smell like something burning, but it definitely smells horrible.

black label

I believe our cars tend to drop off in power at 6700-6800.

There are 2 schools of though on this however. If you do run all the way to redline, when you shift, you will be at a higher RPM in the next gear than if you shift when power drops off.

If you shift at 6800 (as the power drops), you will be at a lower RPM in the next gear and there will be a slight delay to get back into Vtec range.

I have been experimenting with both options at the track to figure out what works best on our cars. I have had my best times by running to redline, but there are so many other variables involved that my "tests" are far from scientific.

SIRSIG

almost made me think of getting an AT swap there glad you found the problem. Ask Accord_v6_400m to help you out for the SC install, he lives in LBC...

mrsteve

iTrader: (1)

1.5" exhaust