Took my car to Comptech to check out the SC install (standard boost pulley) and got it dynoed while I was there. Temp in the room was 67 degrees and 60% humidity as it was raining outside. Best run was 275whp and 235 ft/lbs torque. Four runs yielded 270-275whp and all were pretty consistent. A/F was 11-12 through whole run. Belt wasn't slipping - 4lbs of boost @ 6900rpm and 275whp. With Mugen mod, water temp was at 180.

I was very disappointed especially after adding the SC, headers, B-pipe and axleback mufflers. Unfortunately, I didn't do a baseline dyno and I'm kicking myself. I was hoping for 290-300whp.

Any ideas? Seems low to me. What effect would 60% humidity have on the dyno.

I'll post the dyno tonight.

 

mos def get the hbp, will put u at 300

 

I guess I was expecting more since Comptech's 6MT dynoed at 299 per the dyno on their web site. cls6sp03 dynoed at 305 with similar mods. All three of us were done on Comptech's dyno. 25whp less is quite a bit

 

what did they say?

 

They say it's running as good as it can. Ryan made a minor adjustment to the FPR to get fuel trim to 1.00. Without a baseline, I don't have a comparison. For all I know, my base motor might have been low but it just doesn't make sense to me.

Here's the Dyno:

 

I would definitely get the HBP. I was more impressed with the addition of the HBP then I was with the initial SC install. Mine dynoed 265 whp with the HBP and I have the 5sp auto so I'm sure you would really appreciate the extra 1.5lb. And if I'm not mistaken I believe that Comptech's dyno results was with the HBP. Can any one else confirm this?

 

actually I don't think those are bad dyno numbers through an autotrans....are you runnign stock torque converter too...might be able to pick up a little extra if you change it...but if you think you're depressed just imagine how bad the guys with the civics with h22a motor that put 160-170 to the ground....cuz after all with headers cai mugen/spoon/topfuel progy, dist turned totally counterclockwise they should be making atleast 250...right... sorry to vent just hear alot of that anyways thats a respectable dyno pull IMO

 

In an eariler post you mentioned a harmonic vibration, what did Comptech say about it?

 

[]Whats the best price paid for a s/c?

Im ready!

 

He has a 6 speed.

 

what i always notice is how the dyno on theose SC cars are pinned straight up ...another 1000 rpms wouldnt hurt if you did the valve job necessary

 

The peak #'s might be a little low, but that TQ curve is where the gains are. You now have 220+ at the wheels across the whole RPM band. Also you did dyno in 4th right? Your actuator working?

 

dyno in 4th in a 5spd auto? I was under the impression the best gear for 5spd autos is 3rd...

regardless man that's a solid gain over stock . I see you're in Cali... is that HBP and lower octane figured out yet

 

That is usually the gear that dynos are done in-autos at least.

 

6 speeds get done in 4th. This dyno is a 6 speed.

 

My dyno at Comptech showed the HBP adding 31 HP to the wheels. I did a base run at 11 a.m. at 91 degrees, and the second run with HBP 2 hours later at 93 degrees. That would put Jeff at well over 300, maybe 310.

Are most dynos corrected for temps ??

 

IMO, that is a bit low considering what all is done. But since they did check the A/F ratio and it was fine, this may be it and just bad luck. The first blown dyno I did yielded 265 WHP but that led me to determine my FPR was busted. With it fixed and running the HBP I jumped to 315 WHP.

Since the curve looks so good and the A/F ratio is fine, there may not be anything to look at. I would check the compression the next time the plugs are changed though.

 

One other thing to consider, is a weak blower. It may be turning but is it sapping more power than it should.

 

Well Jeff, I think your dyno seems quite respectable running the stock pulleys. Remember my auto dyno w/ HBP? I think it was 240hp/220tq on a Mustang dyno. Dynos are just for show and to see gains. Don't get too hung up on it. Take the car to the track and I guarantee you'll be hitting mid-low 13's once you get her to hook up. The track is ultimately all that matters!

 

Can't see the dyno for some reason

Seems a little low to me though. Should have been closer to 290 whp.

 

It still has a harmonic vibration between 3,000 and 3,500 rpm. They pulled the blower out and check the alignment of the mounting plate and everything checked out. Put it all together and the harmonic was still there. Comptech pulled out their 03 CL-S 6MT and it has the same harmonic in it - they just didn't notice it. We did isolate it to the blower by pulling the belt off but Comptech is thinking it's normal with this kit. They're thinking the blower and install is fine.

Anyone else w/ SC and 6MT notice the harmonic at those RPM?

 

I got mine from Dean Baty at Speed Distributors. I've bought a ton of stuff from him and he's always taken good care of me. He was running a group buy last month on the SC for $3,925. You should give him a call and see what he can currently do.

Dean Baty
Speed Distributors
407-772-0070

Looking for a Supercharger

 

Dyno was done it 3rd for some reason.

Actuator is working and also VTEC was confirmed working.

 

6speeds usually dyno in 4th. This may be the reason behind your numbers. Autos usually dyno in 3rd.

4th is the closest to a 1:1 ratio

 

Thanks Tom,

I know it's just a number and I to remember that I was satisfied before the Dyno. I definitely appreciate the added torque and pull this thing has. I just want to make sure that there's no additional HP to be had out of this setup. In the end, it is what it is.

You're absolutely right, the track will be the test. Results are what matter. Not sure when I'll have a chance but I'm going to make an effort to get to the track.

 

Is there any way to check the blower or determine it's resistance easily? Shad mentioned that all the blowers were spun at the factory to make sure that they met quality standards before they're sent out.

 

[QUOTE=Allout]I got mine from Dean Baty at Speed Distributors. I've bought a ton of stuff from him and he's always taken good care of me. He was running a group buy last month on the SC for $3,925. You should give him a call and see what he can currently do.

Dean Baty
Speed Distributors
407-772-0070

Thanks man.
Gonna go with the HBP from the start.

 

Same standards as their springs?

 

Actually hearing your numbers Steve, it makes me feel a little better. If I go with Red Rider's example, I would be around 310. You're still 10-15whp ahead of me because if I rember correctly, you 315whp was without a B-pipe. Compression test may be a good next step. Since I bought mine used, never know if a valve got dinged on an over-rev.

If you can think of anything else to check, I'd appreciate any advice. Only has 22K miles so I think the Cat is OK.

 

Good choice. Since you can get good gas in FL, there's no other option to consider.

 

From what I understand, they are corrected for temps, humidity, barometric pressure. Not sure how that all works but the program takes all that into account and works up a correction factor. Ryan was going to pull some previous dyno's and take a look at their correction factors.

 

Wonder what effect this may have. Anyone done a comparison?

When the weather dries out, I may have to have another dyno run locally just for a piece of mind.

 

I have the same vibration and have read in other threads about people having the same. Mine does it at the same RPM as yours. With the hood open and working the throttle by hand and placing my other hand on the blower, you can feel it. It hasn't hurt my performance so i guess it's just a characteristic of the unit itself.

my thought is when it reaches that certain rpm, it may be in sinc with other moving parts within the engine itself, and the blower unit magnifies the vibration. Sort of like when you are on a jet aircraft at cruise and the pilots are attempting to sychronize the engines, and you feel and hear a harmonic noise/vibration until they the pilots are successful.

just my

 

That's exactly what Shad said. The combination of components may cause the harmonic, not the individual components themselves. It's good to know you're not alone with this.

 

opps, when i first read your post i thought u were a 5at

 

I did a few stock runs in 3rd & the #'s were lower then the4th gear #'s. Not by much. However the blower adds so much that it might not have even mattered. I'm a little suprised CT didn't dyno in 4th. They should know what they are doing