[BigShow]

Guys can we please get this thread back on topic. All I'm trying to find out is how many individual performance parts have made or lost power after fitment.

Yes I know that this will be reliant upon a dyno and I know that therefore gives varitations but with enough data trends will be formed.

I don't care who manufactures the parts or what thier gripe might be about how the performance was measured, afterall if makers of performance parts had them independantly tested then showed the test results we wouldn't be questioning them in the first place.

An example of a good independant test is this:

Thorney Motorsport Fuel Test Results

Sadly though I don;t know of many producers of parts who test them as Thorney have above with fuel so we're reliant as usual on users testing products to show gains or otherwise which over time and if collected properly will show trends.

That's all I have to say on the matter, if you wat to debate it further I suggest you start a new thread.

Thanks

The Show.

[GTT 280]

i noticed a good improvment when i fitted my lightweight O.Z. wheels. Less inertia to overcome, and this became power instead. so although not actually adding BHP, it allowed more of the BHP available to be seen as power. The essence of a turbo over a scharger right?

Cheers,
K.

[Loui]

Janspeed decat pipe lost 9whp on my car

[Lucky Dave]

Without the need for a dyno my GTT JCW airbox incert knocked nearly 0.5 of a second from my 30-60 times as show on my logger.

[Bhozar]

Quote: Originally Posted by GTT 280 (original)

i noticed a good improvment when i fitted my lightweight O.Z. wheels. Less inertia to overcome, and this became power instead. so although not actually adding BHP, it allowed more of the BHP available to be seen as power. The essence of a turbo over a scharger right?

Cheers,
K.

I agree with lighter wheels. Great performance improvement, butt dyno measured.

[GTT 280]

Quote: Originally Posted by Bhozar (original)

I agree with lighter wheels. Great performance improvement, butt dyno measured.

Steering, acceleration, braking, and general driving are all improved (not just bhp). Certainly the best mod i made - and cosmetically enhancing too (which is nice)

Cheers,
K.

[TRISTO]

Quote: Originally Posted by batou (original)

If people would simply post their results from different parts its one way of seeing what works together, or what parts work good on top of others. I whole-heartedly agree that its too hard to find out exactly how each individual part works on a stock car. But this way users can pick and choose exactly what they want without all the crap, marketing led shiny bits that when put to the test, make a choccy teapot seem useful!

My car was put together from recommendations from tuners and users along with a few personal touches, it worked, very well as so as long as it's kept informative and we all have something to refer to it is a good idea... albeit a very difficult one.

I agree batou, if you look either at the dyno graphs or the performance parts people have added to there mini's they all roughly have the same parts i.e Air intake, Spark plugs, Pulley, intercooler, manifold and exhaust. I no the BHP and Torque will be different for each of the cars but if everyone puts there results up then we can calculate an average for the power gains to give people a rough idea, this may help them choose what parts they will go for next.

This is a excellent thread to start so instead of people starting threads asking about parts for increasing power gains they can just look on here

[MINIMANIAUK]

Wow -this is a truly difficult thing to establish for a whole host of reasons ,take for example one component -the supercharger each charger will perform slightly different (not just the pre/post facelift )it only takes 1/1000 " difference in tip clearance between 2 chargers and 2 different results will occur ,both may give the same boost but one flow more air than the other - the running temperature will affect clearances as would wear or bearing play ,condition of the oil,age of the charger ,rotor surface condition .
Ever since the start of cars ,people have tuned them and 100 years later there are no definitive answers when it comes to combinations of components, This is part of the fun in tuning your car ,you read books ,articles etc and you decide what you think works best for you and what you can afford!!!
The principles have seldom changed and physics still applies in all things mechanical,new ideas like wet flow cylinder heads are starting to become popular and will probably make the old flow bench ideas seem "old"
If you pop the hood of a row of race cars all the same model -no two engines are the same!!(except the JCW challenge cars) as each owner has his/her idea of the perfect tune that suits the application.
Dynos are a good guide ,and looking at what others have done useful -you can try and work out what they have done and what items gave the gain you are looking for -torque,hp,throttle response etc ,but 2 cars alongside each other on the road also tells you much -
with so many components to change I doubt there will be a definitive answer

[BigShow]

Quote: Originally Posted by MINIMANIAUK (original)

This is part of the fun in tuning your car ,you read books ,articles etc and you decide what you think works best for you and what you can afford!!!

And this is why I started this thread!!! If 10 people on here say that they lost 1 bhp when changing from a stock air box to a CAI will I then spend £200 on a new CAI to try and gain power... Errr No. Instead I'll see what most people found was an easy bhp gain and spend the money on that instead. But unless you have something like this thread to read, we will constantly be answering the most common question on this thread over and over again 'I've got a new MCS and want some cheap power, what do you recommend?'... , the trouble is now that most people say, Go to GTT, go to Lohen, go to 1320, get a pulley, get a CAI, get a manifold.

But at least if there was a thread where people can put what they have found has given them proven gains, the new MCS owner can have a good read through, look at some prices and make an informed choice based on the experiences of others.

1320 spent time using what they learn't to write down in their opinion the best route to tuning a Cooper S (http://www.mini2.com/forum/1320autos...-new-post.html) but they're a tuner and I want to hear what other owners have found to give good gains.

[Lucky Dave]

I believe the path could misguide some owners.

Im a firm believer in customer relations and for those who dont know what they need, maybe they should talk to the tuning firms that they choose and form their own opinons not what some happy mini owners think.

Face to face tuning is where tuners can access what the owner wants and needs.

Lets not kill off the customer service, hundreds of folks buy induction kits for just the noise alone.

And I think you have answered your own question with the link to Pauls thread.

[Jaw_F430]

I will post my findings but I didn't have the car dynoed when stock! Doh!!


In order:

15% pulley (faster as tested against another car, got a bit closer but still cannot catch my bros Focus RS)

(Fitted but didn't feel any difference)
JCW catback
JCW 380cc injectors
JCW map
JCW air intake
JCW plugs
GP I/C

Had the car dynoed at 1320 and reached 225bhp ( Compression down on all cylinders but mainly No2)

New engine fitted due to poor compression and fitted:

RMW head
1320 camshaft
Janspeed mani+cat

*removed JCW exhaust and fitted stock again after reading Roland's exhaust back pressure test and also to make the car quieter*

Soon to fit 440cc injectors and RMW custom map when car has done 1000miles and run in (on 600 at the moment).

Will post my next dyno graph then, hope to see somewhere around 260ish bhp/230ish whp

[hedgetrimmer]

Quote: Originally Posted by feenaldo (original)

I think I will leave the BHP to my Caterham and get my kicks and big grins from going round some country lanes in my MINI rather than framing a till receipt from the pod

Nice to see another owner with excellent taste. Running an Caterham R500 for extra adrenalin rush although I get just as many kicks out of both cars.

[Longboard 2]

Quote: Originally Posted by Jaw_F430 (original)

IRMW head
1320 camshaft
Janspeed mani+cat

*removed JCW exhaust and fitted stock again after reading Roland's exhaust back pressure test and also to make the car quieter*

The RMW head flows a lot of air. Putting the stock exhaust on is just going to be a bottle neck. Kinda defeats the purpose. I will surprised if you can hit 230 WHP with the stock CB.

Longboard

[Paul Webster]

Quote: Originally Posted by Longboard 2 (original)

The RMW head flows a lot of air. Putting the stock exhaust on is just going to be a bottle neck. Kinda defeats the purpose. I will surprised if you can hit 230 WHP with the stock CB.

Longboard

http://www.mini2.com/forum/engine-dr...in-loss-2.html

[GTT 280]

some things need to be added that don't necessarily generate bhp but do help in transferring it more effectively. Most people wouldn't consider buying clutches, diffs, suspension, brakes, wheels etc. but with all these, i bet a same powered MCS would loose.

Modding is a broad category game, not just under the bonnet tweaks

Cheers,
K.

[batou]

Quote: Originally Posted by Jaw_F430 (original)

*removed JCW exhaust and fitted stock again after reading Roland's exhaust back pressure test and also to make the car quieter*

Was this the face-lift JCW? Maybe he tested the one with the flat bit. I didn't think the JCW would be a bottleneck?? Sounds awesome with the Janspeed too!

[SPDinNY]

I know that my car with a cravenspeed 15% pulley and a generic CAI only put down 204whp on the dyno and after a Jan tune put out 206.4whp and 191 lb-tq. I guess lucking out and having a factory freak is the best mod lol. I dont know how to convert whp to bhp though so I dont know how I compare to others in this thread. I hope to dyno it again soon after changing the exhaust from OEM to something else and putting a new belt on as i was slipping (should have hit about 211whp)

[Jaw_F430]

Quote: Originally Posted by batou (original)

Was this the face-lift JCW? Maybe he tested the one with the flat bit. I didn't think the JCW would be a bottleneck?? Sounds awesome with the Janspeed too!

The JCW exhaust that I had fitted had the flat part in. Was this the face lift one?

I thought it was tooooo loud after I fitted the Janspeed, but I do have Jans head which may add to the sound

[batou]

Quote: Originally Posted by Jaw_F430 (original)

The JCW exhaust that I had fitted had the flat part in. Was this the face lift one?

I thought it was tooooo loud after I fitted the Janspeed, but I do have Jans head which may add to the sound

Yea, I have the pre-facelift without the flat bit. It is loud! It's fine when cruising and not so bad in the cabin, however, I blipped the thottle in a tunnel the other day and hooooolllllllyyyyyyyy sheeeeeeeeeeettt!! . I haven't (can;t either) used full throttle yet... I'm having to pootle around lol.

[Hyper Active]

Quote: Originally Posted by 1320autos (original)

Yeah you're right Paul the Milltek Cat back did make 10bhp difference but that was at 280, it might make only 2bhp or even loose power on a stock car.

Then you get some real freaks of nature like Alski's, I know Jan has found some freaks on his tuning tour around the states.

Even Bhozars back to back cam test is the highest we've ever seen for that cam, we usually see 8-12 gain on a stock head though Bhozar's is a JCW head.

When we go to Surrey Rolling Road at the end of the month for the dyno day, i will have a Milltek cat back on my Cooper S with no other performance mods. So we will find out whether on it's own, it makes any difference or not .