Hi i recently made 154.2hp at the wheels on the dyno what is that converted to at the flywheel.

Thanks,
Perry

 

Math is up to you!

Matt

 

Crap i think i have it round the wrong way, the HP number that i'm after should be the higher one so it might have been 154.2 at the flywheel. Hope that makes sense.

 

As the Doc said, some use 12% drivetrain loss; I use 11%. A stock 2002-2004 MCS makes about 146 WHP and a 2005 & 2006 about 149 WHP (+/- 2.5 WHP). If you dyno numbers reads more then it needs to be recalibrated and/or the correction factor adjusted.
Thus, you must have some engine modifications because your dyno number reads about 170 HP.

 

Thats cool but i still don't know how to calculate the figure. Do i take 154.2 and divide but something or take 154.2 and times it by something. I still don't don't know what to do with the 12%, 11% thing to get the figure

 

If it was 154.2 at the wheels, then 154.2*.12 = 18.504. 154.2+18.504 = ~172.7 hp at the flywheel.

 

My wife's bone-stock 'S' made 158 hp at the wheels, SAE-corrected. Assuming the crank HP is close to the 168 that MINI advertises, that's about a 6% driveline loss with the 6-speed manual.

Your numbers sound like they're in the ballpark for a stock 'S' - do you have any mods?

 

Thanks for that, disappointed with the figure. Surely with my mods i'd get more than that. I have 15% reduced pulley, xforce manifold, xforce racing cat, xforce cat back, pipercross induction, madnacore leads, NGK iridiums and engine damper. With all that i'm get 10hp more than stock???. I've got a alta intercooler V2 coming should i see increased numbers with that installed.

thanks
Perry

 

Another magical NAM dyno number. Do you think the dyno or the correction factor needs some work?

 

It was a bloody hot day and the bonnet wasn't open so limited air was getting to the intercooler. Sorry what is NAM

 

He said, "Hi i recently made 154.2hp at the wheels on the dyno..."

Some one asked, "Front or rear?"

 

NAM is this web site.
Dynoing without variable control, intake air temperature being the most important, is a useless exercise.

 

Oh, there's plenty of error to go around - the SAE corrections for temp/pressure/humidity aren't perfect, I can't vouch for the accuracy of the measured temp/pressure/humidity in the shop, and when my wife's car was on the dyno, they had a fan blowing into the intercooler inlet that might have been pushing more air than normal road speeds would cause. Then there's the accuracy of the dyno itself.

Also, I know there's a variance in "stock" horsepower depending on the miles on the car, fuel used, manufacturing variances, and things like that.

The only conclusion I felt comfortable drawing was that *if* his car's stock, it looks like he's in the ballpark - nothing more, nothing less. Considering the list of mods he posted later, I'm at a loss. Maybe the bonnet being closed was boosting the IAT drastically.

 

Mini is 2003, 45,000km and it was running 100 octane fuel, temp outside was about 38degrees plus.

Wouldn't that be 154.2 front wheel drive as it is a front wheel drive car.

 

Also keep in mind that unless you did a pre-mod dyno, you have no idea how close your car was to the sticker crank hp. Besides, the intake exhaust isn't going to get you HIGH hp gains. Try a header to complete the exhaust system...but for all you know, you could have been running with 140 at the wheels which would give you a 14 hp increase at the wheels. Don't be disappointed with the results unless you know what you started with. Does the car feel 15 hp faster?...because it could be. If you noticed hp increases with each mod and it was enough of an increase that you can rule out placebo, than you did pretty good. You also dynoed with no air flow! You were sucking in hot air as there was nothing to move the heated air from under the bonnet. You will probably get 5 hp more if you open the hood and put a nice fan infront. You could have even gained 20 hp...there's no way to know until you redyno correctly...who set up the car for dyno? anyone who has a dyno...should probably know how to use it...

 

The guys that set up the dyno were having a dyno day so they were quick about getting the cars on and off, so with the proper time spent on setting up a fan i'm sure it would of helped a bit. The car does have a Xforce header.

I think the dyno might have been a bit off becuase my brother has an EVO 6 TME with HKS front mount, HKS custom manifold, Trust Turbo back exhaust, ARC air filter, HKS blow off valve and it only made 207hp.

 

Would a MTH file help to bump up the power, will you need to tune it for the intercooler aswell

 

An MTH file would help.
An "uprated" intercooler does not need to be accounted for as I have yet to find one that makes any discernable difference. For you modifications I'd look to the new GP intercooler and related parts.

 

What type of Dyno was it? Those mods on en EVO 6 (With stock boost on a stock turbo) would be around that on a Mustang Dyno, keep in mind the EVO will have much more drivetrain loss through it's AWD system than the MINI's FWD. Mustang Dynos typically read lower but are concidered to be more consistent from run to run. I'd take the number as a performance benchmark and see where you're at a few more modifications down the road. We don't drive Supra's here, our cars aren't dyno queens.