I just had my 05 MCSC dyno'd at Mt. Airy Motors (in Maryland) on a Mustang 1750 dyno. My car has a 15% pulley, ProMINI CAI and AmD One-Click software.

Environment was about 60 F and 90% humidity.

My peak HP was 136 at the wheels, and max torque was 124 lb-ft. These numbers seem low to me considering the mod's done to the car.

The engine HP climbs solidly up to 6400 RPM.

What is particularly troubling is that the torque drops dramatically between 4,000 and 5,200 RPM, corresponding to a drop in the AF ratio. Torque maxes @ around 4,000 RPM (124 lb-ft) and is down to 115 lb-ft at 5,200 RPM.

I'm curious to know if that drop off is typical or if I should consider dropping the AmD software and go the Unichip route.

Honestly tuning is new to me so any input/thoughts is greatly appreciated.

 

typically a stock Mini S on a mustang will produce 149 whp; in your tune, expect about 170whp.


i would expect some operator action skewed the results

 

How did you like the joint? I'm going to be contacting them in the upcoming weeks to do the same - dyno runs and a/f monitoring.

Marty

 

humidity was 90%.. can i hear heat soak and 'humid' heat soak at that?

it sounds ridiculously low.. in that tune i expect 160 at least wheel hp

 

Thanks for the feedback everybody. Glad to hear that I'm not off-base in being disappointed in the numbers. I guess I'm still not sure what to do about it -- disbelieve the #'s or try to find a cause.

MartyR - The guys at Mt. Airy were great - very relaxed but professional. They let me hang out with them the entire time, including when they put in an 02 sensor ahead of the Cat. I will probably go back and have my sway bar put in and do another pull just out of curiosity.

jlm - what are some possible operator issues that would skew the results? From what I saw, the process was pretty straightforward.

One other (dumb) question -- they disconnected my battery when putting in the sensor. That wouldn't have caused the ECU to lose it's remap would it? (Even w/ stock program, the numbers are bad though )

 

Well, don't you know if your car is as fast as a stock '05? Have you driven one or raced one? If yours isn't faster, then maybe those numbers are right. If you are faster, you know the dyno is false.

 

Well... with the mod's it felt faster than when the car was stock. However, I put the pulley, CAI and ECU remap on just after the break-in so I also started driving more aggressively which could account for the difference.

I haven't had the opportunity to go head-to-head with a stock 05 S, so I don't know if it's faster. And coming from an 02 MC, pretty much anything would feel faster.

 

Welcome to the land of mods and dynos. It is a little freaky.


I don't know your software but the stock software supposedly can adapt to the 15% pulley. With just the pulley and CAI you should make at least 10-15 more hp than stock. 90% humidity is high and the Mini is very sensitive to temp and humidity so that may be a big factor but your numbers are low. I would consider going back to stock software and re-do your dyno.

GIAC gets rave reviews with the pulley, CAI and cat-back mods. I would seriously check that out. I have a UNichip and it is performing very well right now but unless you have a Unichip tuner that will dyno tune your car I would look very hard at GIAC. It's less money and with that list of mods seems dialed in.

 

I think the "freakiest" part was when I was asked to sign the waiver saying if the car goes flying into a brick wall it's my problem. I guess I need to reschedule a dyno when it's not raining.

AmD says they get 200 HP from their tune w/ pulley, so I'm nowhere close to their reference. Still trying to hear from them and see what the problem may be.

The place I went is going to start stocking the Unichip and will tune it, so that may be an option. I originally went AmD because it is so easy to load and switch between stock and remap. But, this shop is close enough that a custom tune may not be a bad way to go.

 

Not sure if this helps...

I dynoed my '05 MCS here in Phoenix... Milltek catback and RE CAI...

63-64 degrees outside; 78-79% humidity, it was a rainy morning...

Best run on a dyno jet:

157.72 whp & 143.88 ft-lbs of torque!

This is a good question, how much would humidity affect our MINIs?

http://www.geocities.com/tankboy1274/Dyno_Results.pdf

 

I was in Birmingham and before the rain we were making 5-7 more whp.


If they are stocking the UNichip and they will tune it I like that solution. It is what's on my car and I like the way my car is running (now).

What I have seen is that with mods the A/F ratio can get weird and by dialing that in the power numbers go up. Timing can be manipulated and if done correctly power numbers go up. Cat backs and intakes can make power but sometimes I think the cool sound gets mistaken for cool power. This is what I experienced. I really am a believer in the dyno tune if you have mods. Off the shelf has worked and is working for a lot of people but for my car with my list of mods it did not.

IMHO get it tuned so you know it is right.

 

Just as a reference number, I have a 2004 MCS.

Ran it on a Dynojet setup under the following conditions:

68.7 F Temp 24% humidity
SAE - 150.73 WHP, 130.53 lbs torque, Stock

74.7 F Temp 43% humidity
SAE - 161.95 WHP, 136.95 lbs torque, Stock + Alta intake (no silicone hose) & Magnaflow exhaust.

Bill