I have done a lot to my car and I wonder where the top is without turbo or NO2. I see some posts from England claiming 265 bhp. What is your best dyno? I have ordered the intake manifold and runnners from WMS, after that I think I am done. I have had mixed reviews about porting the SC. jlm is doing some radical things.......

 

Get the ported blower Bob if you can afford it. I am finding more and more that it makes a big difference :smile:. My car needed running in after all the new components etc, but now that is done and I have the MTH tuner map installed, I am hauling in Imprezzas and Porsches like no tomorrow. No kidding

My car goes on the dyno this or next month but to be honest, dynos are all junk anyway in my opinion

GTT have a 273bhp (crank) MINI and that is genuine. I have seen it's build up from day dot, taken a few rides in it on track and road and seen the dynos to prove it. Our fuel is better over here, and the climate is generally more temperate (can you say RAIN?! ) so I guess that accounts for most of the variability in cross-pond dyno runs. On the road though, a 260-270 bhp MINI is everything it's figures would suggest, and nothing less . If anything, the MINI excels on the road thanks to all that lovely cool air flow.

In short, I have seen evidence that certainly in the UK, tuners here can get 230-240bhp ATW from doing basically what I have currently done to my engine.

Cheers,

Henry

 

I agree with supercoopers there is a lot of bs with dynos / rollin roads, the only true measured hp is the mph/weight at a dragstrip., it certaintley cuts the bull.

An amusing story; fella buys a V8 engine from the states dynoed at 955hp an engine shop rebuilds it over here modifys the heads redesigns the cam dynos it and it makes 895hp. customer is well pissed, customer is told to run it in the car first and see what it does. first pass .5 sec faster, it took him an hour for him to figure out that he didn't originally have 955hp

 

Funny story.

 

It may have made 955bhp, but the transient response and recovery is what's really important. Especially on the drag strip. BHP isn't everything

 

Well, I know Dyno reports are becoming less and less credible lately, but I’ve dynoed my car at 236 to the wheels, which I think converts to about 270 at the crank. This is with the entire Mini-Madness Stage 4 kit, and tuning by Bullet Performance in SoCaL.

 

You have the M7 SC ..?

 

What dyno did you use? Many types of dynos return lower results, the mustang being one of the worst...

 

I'm not sure, I had the car tuned at Bullet Performance in SoCaL, they provided the dyno results. The car was Dynoed at Pecora German Cars in Costa Mesa, CA. Not sure what type of dyno they use off hand. the results were 233.49, 238.37, and 237.86 (They ran it 3 times). Average of the 3 runs is 236.5 or so, so I just rounded it off to 236 for the hell of it. I'm waiting for these damn run flats to burn up so I can put some real tires on. As it is I can't get ANY power to the ground. I just spin tires to redline in 1st, and chirp in second.

 

Very nice I feel dyno results are flawed at best. As long as the car is fast, im happy.

 

Do you have the dyno charts you can post showing this? And when you say tuning by bullet performance what do you mean? What did you use to tune the car?

 

The most we have gotten on a stock supercharger based car without NO2 or giant cooling fans or a cold car etc. is 228 at the wheels average over three runs with the car at operating temp. That was on a 90F day as well, so I'm sure the car could have done better on a cooler day. Since then, that car has made 268 at the wheels using a TurboKompressor kit from Helix which we installed in house. The testing was done on a DynoJet 224 and was repeatable.

For the record, it is very difficult to see over 200 at the wheels on a car with the stock supercharger.

Hope that helps!
Randy

 

Do you feel that the cost of getting 200 whp with the stock charger is comparable to the cost of doing a TurboKompressor?

 

Probably. What will be interesting to test though is which is more durable on the track over extended periods.

I will probably be doing a TurboKompressor kit on my car, as we do the Enduro every year. The stock supercharger maxed out has been very durable. I am interested to see if the TurboKompressor will be as well.

Eric stated that the intake temps are cooler, so I don't see why it wouldn't be in theory.

Randy

 

Randy, if I recall correctly, you are well above a mile (5,280') at your location. I think I remember you saying 6,000+... When you quote the above, does that take into account or factor-in elevation? This link here reveals that a 6,000' delta (all else equal) accounts for about a 20+% difference in power creation: http://wahiduddin.net/calc/calc_hp.htm

Thanks much for the clarification.

 

If you are interested there will be a dyno day in you area on September 25, see post 16 of this thread for details:
https://www.northamericanmotoring.co...121#post642121

$50 for three runs, this dyno is a favorite place for the SoCal MINI crowd,
There will be 10-15 MINIs there to compare your car with.
Jan's Twin charge MINI has been known to show up at these events, 280+whp last time out, now he has a custom fuel system that will let him see the far side of 300+ whp.

We have held 3 or 4 events at this dyno so there is a long history of runs to compare your car with. It always helps to run with other MINIs on the same day with equal conditions to get a real feel for the improvements you have made.

Hope to see you there.

Bill

 

I do have the dyno charts, I'll have to find a way to scan them, as I don't have a working scanner right now. Worst case I can just take a picture of the charts . By tuning I mean installation and such. I bought all the parts in the mini madness kit and had bullet install them, rather than buying the whole kit from mini madness, which was more expensive. On a tangent, I double checked my tire pressure (they looked fine, but I remember run flats don't usually look flat when they're low on air) I was running at 18 PSI!!! They're now happily at 34 PSI and I'm putting most of my power down to the ground, I still feel that some good Toyo tires would better suit the car though.

 

That's why I use SAE corrected numbers. Even so, there is still a loss at altitude when compared to SAE corrected sea level numbers, but as long as I use the same dyno with the same correction and the intake air temps are close, it gives me the numbers I want. With a force induced car, the losses are more like 15%.

Remember that the dyno is a tool, and should be used to show trends in the right or wrong direction, as well as tuning A/F ratios and ignition timing at different loads and RPM.

Hope that helps!
Randy

 

I did see that, i'll have to see what I can do to make it. Where is their shop? I searched the site for a while but didn't see any mention of an address. Best I could come up with was the area code, which is Long Beach I think.

 

This is completely right for a car at stock/near-stock redline, but if you raise it wonderful things may happen .

 

Actually, the car in question has a redline of 7500RPM...

From what we've seen, there really isn't much of a difference with a higher redline in peak power, you can just stay in a gear longer.

Hope that helps!
Randy

 

Here are the dyno sheets
Looking back at them I see I actually marked the Torque a little high on my sig. Also, they were taken with temps around 75.

wHP


Torque

 

From the info button on their web site:
http://www.racesolutions.com/

See the maps there.

ADDRESS: 401 Park Industrial Drive, La Habra ,CA 90631

Driving directions Coming from the 57 FWY:

1. From the 57 FWY, exit Lambert Road.

2. Turn West onto Lambert Road. (turn right if coming from the North or turn left if coming from the South)

3. Turn Right onto Cypress Street.

4.Turn Right onto Park Industrial Drive.

5. Turn Left into Driveway at 401 Park Industrial Drive. (We are located on the Northeast corner of Cypress Street and Park Industrial Drive)

We will have fun,

Bill

 

Ahh, shows how thorough I am . About an hour from me, I saw 9:30 as a time listed above, is it an all day thing, everyone just gets a slot of time?

 

Thanks for the reply Randy. I totally understand the dyno being used as a tuning tool to evaluate modifications. I was under the belief, from your mule and jlm's rig, that right around 220 whp was the max that we can expect to see with the stock blower as the sole source of forced induction.

Then, in this thread, talking about the max whp w/o a turbo, we see 236... In trying to reconcile this delta (from 220), elevation came to mind.

Oh well, I guess just another example in why not to put much credence in comparing dyno plots of different cars, on different dynos, with different operators, equipment and techniques...