Finally got a chance to get my MCS on a dyno. Now I am not starting a discussions about which type of dyno is better, where they placed the fan for the intercooler, whether dyno is useful or not, etc...

This is simply a post giving a local shop, http://www.iaperformance.com/ some props and to "show off" my numbers. These guys setup a dyno day for a bunch of us euro guys in Tucson. Too bad no other MINIs showed up, but my sense of the local MINI crowd is that it is more of a "cute" car to them than a performance car. To each their own.

Anyway, these guys have a mustang dyno which will always read lower than a dynojet, which are more common. Typically closer to the Dyno-Dynamics dynos. Also in many people's estimations closer to real world conditions too.

The weather was typical June Arizona. Ambient in the bay was 90. They did spray the intercooler before the runs though.

The print out is really hard to ge a cood picture of so in summary:
Max WHP:163
Max Torque: 161
Boost:14.9 psi

A/F is also on there and I run nice and rich once you get up above 4500k rpms. I do not have a stock baseline. I mod for the sheer enjoyment of the research and work. I am not out for the max HP gains for dollar. This is my therapy sessions

My mods are in my sig, but the performance rundown is:
Alta CAI
Alta 15% blower pulley
Alta 2% crank pulley
Magnaflow catback
Denso plugs

 

All dynos act differently but I figure you should show more whp. About 10 more.

 

Not with the fan set up that way... Almost no air flow through the IC, and see the bumps in the data up in the last two squares? I'd bet money that you're getting some timing retard there......

But whatever, it's good to see the runs, and the A/F data is usefull too.

Matt

 

I thought you would be running in the 190whp range with your mods... I know what you said about the ambient temps and the mustang dyno. I would think you could benefit by some ECU programming. This will lean the mixture out some and yield more power. I have similar mods.. Have not been to the dyno with mine yet.. I am thinking about going the GIAC route to optimize my mods.. I like your mods... just think you might benefit by some ECU programming..seems like the next logical step...
Thanks for sharing...

 

seems to be lower than I think..?

U should be putting down at least 180 in my opinion..

 

The fan is pointing at the radiator! It's practically an uncooled IC. Our cars are very, very sensitive to intake air temps... So you think he's about 15 HP or so shy? That's what he would get without cooling the charge. The IC can take about 60 degrees C of charge temp out when the car is moving.... That's about 20% of air density. The SC is eating 20+ HP, and the driveline is taking 10%+ of the measured HP.... So 163 + 10% = ~180. Plus the SC means the motor is making about 200-210 before losses. 20% more would be another 40 HP (I know that these things don't really add, but this can show you the types of losses that might occure due to no airflow through the IC). Now I'm not saying that he should be putting down over 190 WHP, but the measured numbers make perfect sense when the airflow geometry is considered.

For those that aren't really up to how all these bits work together, it's not boost that governs power. It's air density, and IATs. High density with low IATs will create the most power, and won't have the knock sensor pulling timing.

Matt

 

I'd have expected a lot more too. I pulled a 156.5 HP/147 torque on a bone stock MCS (lower ambient (72.92 F, 24% Humidity), dyno jet) so its not an apples to apples comparison. Your graph is a lot smoother than mine was.. gotta love the 91 octane I was smooth until about 4500 RPM, when the AFR went rich and the torque/hp lines started getting squiggly.

 

my brakes!!!!

 

Correction:
my brakes

 

^^

=p

 

Matt-
I know exactly what you are saying. I was less than 100% happy with the whole fan setup, but again, my goal wasn't about having the best numbers (that honor went to an R32 today), but to have fun. I agree about the timing being dialed back at the top end too. Next time I will run 100 octane. This was on our lovely 91 pump gas.

To the others thanks for the positive posts. I too think this was about 10-15whp shy of where I may really sit. I am planning on having these boys do the Garrett (GIAC) flash for my car in the next couple of weeks and then we will repeat the dyno. That will be a one on one rather than a group dyno day so I can be a bit more critical about fan placement etc. They also reved to 6500rpm. When we re-do it we are gonna push right up to 7200. With new ECU mgmt, 100 octane and better fan placement I think I will build power right up to that. I know a bit more is to be had above this but the returns get to be pretty minimal after 7200. Hopefully will be closer to the 190whp number with those changes. We'll see.

Funny thing is the guy with the R32 was about as happy as me. Not dissapointed, but not stoked. He put down 227 to all 4 wheels! It's the same story, you always hope for a bit more than you get I think!

 

I look forward to reading you posts when you dial in your ECU.. Thanks for the great read..

 

dyno tricks...dry ice...open TB (no filter/tube)...new plugs..higher octane gas =P

 

Not if you want real world numbres..

 

I do run 100 through the car about once or twice per month. Don't know if it makes a measurable difference but the butt dyno says it does.

Won't be doing the dry ice trick, but better aimed fans and an early AM session will better simulate real world variables....

 

like people that dyno cars are looking for real world numbers

not like ur gonna get it anyway...way to many variables...and to try to simulate actual airflow

its like people that post their 1/4 mile times and then post the ase correction or w/e...

 

data is data, and if the context is known in detail, it can be better interpreted.

And yes, if you're running into timing retard, higher octane will give you more power.

Matt