Hello NAM Motorers,

I just wanted to post and ask for comments. I have just made a Dyno run on my MINI and the resulst were the following:

MAX Power: 168.4HP
MAX Torque: 154.2
The Modifications that my MINI has are:

ALTA CAI
ALTA 15% Pulley
ALTA 0% Crank Pulley
MAGNAFLOW CAT BACK

Unfortunately I do not have DYNO Results when the car was stock. The people at the Dyno shop told me that teh manufacturers claimed HP is not at the wheel and that it usually is 10 to 15% less at the wheel. Is this true? Does any of you guys have a Dyno chart of a stock MCS that I can use as a comparo? I know it won't be the same because of different cars but at least I can get an estimate. Thanks for your help

 

Usually, there is about a 8-12% drivetrain loss through a manual trans car and about 12-15 through an auto. OEM power ratings are done at the crank with the front accesories being driven, ie-alternator, water pump, AC compressor. Some dynos read differently, also. A Mustang dyno has a bad reputation as reading quite low compared to say, a Dynojet. I would say those are decent numbers considering you only have the basic bolt-ons. A tune in the future will really help those numbers hint hint hint.

 

I'd say those numbers are actually somewhat low...someone correct me if I'm wrong, but most running that setup would see near ~180 at the wheels.

I may be wrong though. I have not dyno'ed my own car; my asserting the above only comes from a personally exhaustive searching wondering what people with the 15% + intake were usually getting.

- Matt

 

It is all bolt ons with no tune, though. A few hours and some well chosen mouse clicking will help. Also, what about ambient conditions? What kind of dyno? Was the car tuned up ie-plugs, oil change, blah blah blah?

 

The dyno numbers will vary on:
Type of dyno
Temperature
Humidity
Altitude
Atmospheric pressure
Tire pressure
Consistency/efficiency of tie down to dyno (if inertia dyno was used)
Method of correction: SAE-J1349, DIN 70020, EEC, ISO, or uncorrected altogether
Gear the car was run in
And last but not least how much Mtn. Dew the dyno operator had earlier in the morning

All of the above means that the delta is the important part

 

Additional information that I can add is:
Dyno: Dynojet
Time: 6:30pm
Temperature: 75 F (Puerto Rico)

The other things I did not ask.

 

those are almost the exact same numbers i pulled over the weekend. however my only mod is an alta cai and diverter.. granted i wasnt in puerto rico weather. it was in the 40s

 

I am completely aware of these things. Gas quality/octane could also be noted.

Even if the dyno was of a "harsh variety," a reading that low can't just be explained away with dyno magic...it's beyond tolerances/estimates. I would wonder if I got a "Friday-build" Mini, or I've got low/bad compression or something if I was getting back similar numbers. The delta is the important part as long as your car isn't mechanically flawed to begin with.

I could be completely wrong. Not meaning to **** on someone's parade here, but he asked whether those numbers are "normal." Well, for the absolutely overwhelming majority of people (from what I've read, again), those numbers are not normal...they're not just around the bottom end of a range, they're off the bottom end of a range. Maybe when I went looking for the kind of numbers to expect aftering doing a 15% and intake, I just looked for the generous ones. Who knows...I'll go back and re-research it...get rid of my enduring beliefs.

- Matt

-Edit-

And I've begun the search, a hit already...I'll add as I find more:

Longboard's Mini here (made 193whp before head w/ 15%, intake, exhaust):
https://www.northamericanmotoring.co...25+intake+dyno

Dyno runs at Minspeed (189whp; no tune...first thread is most to-the-point):
http://www.motoringfun.com/2007/05/2...no-day-part-1/
http://www.motoringfun.com/2007/08/0...cu-tuning-day/

Minimusprime (183.9 whp with 15%, exhaust, plugs, oneball - see first post on page #151):
https://www.northamericanmotoring.co...25+intake+dyno

Redskunk (188whp w/ 15%, intake, one-ball)
https://www.northamericanmotoring.co...25+intake+dyno
Same thread in posts 15-20 power levels are discussed...to quote CXRK: "Actually most of the MINI's that had the mods I had were around this number. Some were 185, some 187 some 175."

I'm done looking unless someone wants more than the several dyno graphs/quotes I produced.

So to wrap up what I said earlier about those numbers: they're not good, and I'd have my car looked at - starting with my belt.

 

Slow down slugger! I'm just saying the delta is the only important thing...if that even

I've seen groups on MINI's from stock to JCW to moderately modified (more than the OP's car) all run on the same dyno, same day and get between 150 and 190 whp. Most notably, the JCW and cars similar to the original posters were running in the 160-170 whp range. Now I've also seen another group, (some of the same cars) of MINI's run on a different type of dyno and the JCW/modified cars put down 175-185 whp...closer to what you see people posting about on the boards. Just my 2 cents on the worthlessness of dyno a chart without before/after results. No offense to the OP...lots of people never get their cars dynoed stock. Kinda like measuring up pre and post Viagra...the post results are a lot more fun

 

Just thought I would muddy the waters a little.
Last July 07 I had my car on the dyno just prior to doing some mods.
The car was absolutely stock and running 91 gas.
The outside temp was over 90 degrees with 85% humidity.

Results: 141 WHP 108 lbs trq @ 6800 RPM

This was an eddy current dyno which I believe to read low due to other
results I have seen from it.
Randy Webb seemed to think it should have been around 150 to 155 WHp

THe high temp that day probably had a large effect on it.
I am going to go back to the dyno next week to see what the 15% pulley, 2% pulley, Webb CAI and Magnaflo Cat back have done for it.

 

if you have a LSD that also tends to cause losses in whp but they let you utilize the power through the bendies! though i have heard cars with those mods putting out more like 190whp havent had mine dyno'd yet

 

Every dyno is different.

A dyno should not be used a as compairason to other dynos unless you are compairing cars put on the same dyno.

Always pick a dyno and stay with it for your future with that car.

When I had my built b16 civic, on one dyno it read 181whp and then on a close friends dyno (different dyno) on the same day (both dynapacks) it read 169whp. Very innacurate to compair across different dynos.

There are all kinds of other questions you could ask which could affect it, was the car cooled down before the runs? What was the tire PSI? Where was the fan placed during the runs?

 

Seems very good to me. You did not state what year your car is. If it's a 02-04, then that would be a nice gain of around 22 whp. Stock whp on this car would have been around 146 whp, 163bhp - 10% = 146.7 whp. 168.4 - 146.7 = 21.7 whp. For a CAI, cat back and a 15% this seems very normal, with no dyno tune .................What the heck the OP is 7 months old????