I had a two hour lunch break today courtesy of Curry Auto Services. I don't have the graphs scanned yet but here's a run-down of what happened.
MODS
-Comptech Icebox
-Advanced ignition timing to 18 degrees

Run#1
I took off the bumper lens so that the Icebox could get air more easily. He plugged up the O2 sensor on that sucker and away it went. The numbers were quite discouraging.
HP: 149.9 @8250rpms
TQ: 99.8 @7500rpms

Run#2
Same scenario as #1 and I got
HP: 151.7 @8250rpms
TQ: 101.9 @7500rpms

Run#3
The guy taking care of me realized that the O2 sensor was fried. So we took that off and I got another nice increase
HP: 154.4 @8000rpms
TQ: 103.1 @7500rpms


Afterthoughts
After seeing the Pennsylvania boys' post about their recent dyno outing, I was expecting around 160whp. So I'm a little disappointed at my numbers. I think I would have seen better numbers if we did my first run without the O2 sensor. I will post the graphs up later but in the meantime...

a.) Can someone tell me why in my 3rd run, peak hp was reached at 8K rpms while my first 2 runs, it was reached at 8250rpms?

b.) The guy was doing some pre-test things that he said would factor in parasitic loses. I just noded my head because I had no idea what he was talking about. Is this synonymous to getting it SAE corrected?



[Modified by CPR, 5:05 PM 10/30/2001]

 

probably from the engine/oil warming up/thinning as you progressed.

 

Those are VERY good numbers considering it was a Mustang Dyno and not a Dynojet. Dynojets seem to register more power...I can't remember how much, but if memory serves it's around 15% or so higher than the Mustang Dyno.

 

Very surpised to hear that your last run (hottest engine/oil/tranny) produced the best numbers.

Did you play with ign timing at all?

 

I think the increase in the last run was a result of us taking off the O2 sensor. As for ignition timing, I've set it to 18 degrees a month ago.

 

Those are decent numbers on mustang, i'm kinda glad to see another mustang dyno's numbers, obviously they are pretty consistant, i have the same mods (icebox, 18 deg. BTDC), and my numbers were basically identical. Do you have a curve you can post? Mine are on our site, i'd be curious to see how they line up.

 

I'll post them as soon as I can get them scanned.

 

My friend owns a Mustang Dyno so that is all I use. When my car had 900 miles and was stock it put down 144hp and 99 ft pd of torque on the MD. I just looked at my sheets last night, it now puts down 181hp and 132 pd ft. on the MD dyno. Don't worry about the #s look at how they improve when you tune/add things.

Mattj

 

Yeah, that's what I was thinking headed to the dyno but I couldn't help but be a lil bummed with the first pull coming in at 149hp and 99lbs/ft. I don't know if you racers know him but the guy taking care of me was named Payton. I think his last name was Wilson. He said he was heading to Summit Point this weekend and he drives a 240sx.

 

Pennsylvania Boys.. that made me laugh.. hehehehe...
After seeing your 1st,2nd,3rd run..
I kinda forget how mine turned out.. but seemed that the 1st run is the highest..
Aleph: do you remember my number? my R ran 4 times, correct? 1st normal, then 2nd without Air Filter cover, then run again (before advance timing).. and another one after 18 degrees.....
(szeeesh!! we ran 3 R that day, I couldn't remember how many times I ran!!)
But the 1st Run is the Highest... 158 something peak.. then downhill from that point. (gain 2 HP back to 157 after the final adv timing).

Good to see someone else get to Dyno at Mustang... so our numbers are pretty consistent...(+/- 3 WHP is expected from Standard deviation like Aleph said)..

 

Did you guys run with the wideband O2 sensor?

 

Mike's doesn't have an O2 sensor attachment...might be a different model dyno. Still, numbers seem pretty close, and yes PiYo, your first run was highest, when the engine was still cool it seems. The only thing that interfaces with the car other than the rollers is the inductive pickup, or an optical for the crank when possible (more accurate, doesn't usually happen with splash guard in place.)

 

By the way, i was at the game last sunday, your giants were even worse than the skins (i'm a DC boy origionally )...i don't follow football much, but i enjoy going to the games with dad now & again...i was like, that NY logo is familiar...oh yeah, we kicked their ASSES

 

Somebody (SN is BudMan) posted this in my other topic about the correction factor between mustang and dynojet dynos.

MD + 18.6%hp = Dynojet numbers
MD + 17.5%tq = Dynojet numbers

I think the correction factor is a little optimistic because this means that my car will have (154.4 x 1.186 = 183whp) AND (103.1 x 1.175 = 121lbs/ft tq) on the dynojet. Damn, Don't I wish!


[Modified by CPR, 6:00 PM 10/30/2001]

 

IT ALL DEPENDS ON THE DYNO! I ran my car back to back MD then DynoJet, Both Dynos were within 5hp (Dynojet Higher) and The exact same torque.

5.0 Mustang Magazine just did a back to back comparison between a
MD dyno and a Dynojet With a Focus and a Supercharged Mustang, I don't remember the Exact numbers but the Supercharged Stang was like 580hp on the MD dyno and 670 on the Dynojet. The Focus was 120 on the MD and like 117 on the Dynojet. The Focus was lower and the pony car gained a tone of hp?

Mattj

 

I ran my ITR there with the following mods:

o Dented exhaust manifold (radiator core support imprint)
o Dented stock exhaust
o AEM intake
o engine rebuilt in spring

I pulled 159.1 whp and 103 ftlb.

Warren

 

Can I fax my dynoplots to somebody so that they can scan it and post it up for me? I asked my co-worker to do it but he left for the day without doing them.

 

ya thats a bit low for a Type-r... i got 146 in my gsr with just intake and 4-1 headers.. and no exhaust..

 

Was it on a dynojet or a mustang dyno?

 

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