Bought my Cooper used and cant figure out if its stock or not... Car runs REAL strong. I keep up with my cousins Stage 2 S4 until he shifts 4th.

Just installed a boost guage today and Im seeing 15psi, is that stock psi?

 

sounds about right to me. stock psi that is.

 

Ask the seller if it's been modified?

Also most bolt-ons should be easy to find if you just look in the engine bay.

 

15 psi would indicate a smaller supercharger pulley. Stock boost levels are in the realm of 10-11 psi.

 

Use a flashlight and look at the supercharger pulley. If it is black and steel it's stock. Most aftermarket pulleys are aluminum & stainless steel and have the % of reduction and a brand name.
http://www.altaperformance.com/produ...ys-Version-2-0.

 

and if it's quicker than you like, try setting your tire pressures to about 10 pounds...

if that doesn't help I have a small lunch anchor you could tow behind the car...

 

Shortstack always remember power to weigh ratio..... S4 has more power but is heavier too.... S4 is turbo= (turbo lag) when he sifts to 4th by then the turbo is full spooled thats why he leaves you behind

 

lol at anchor...... thanx for the input, its quick i love it.. jus dnt wanna call it stock and its not...

dnt know the previous owner, but i will check the pulley.... also going to the track this weekend so ill report 1/4 times...

 

Stock R53 MCS would be mid-15s at the track. With the 15% pulley, you might get into the 14s. Just remember, MINIs are not really 1/4 mile track cars (but it does not hurt, I still want to do that at some point). Learn to take the twisties and see how much you can leave people behind then.

 

Tracked poppa smurf yesterday(1st time ever runing a car at a track) .. worst run and 1st run was 16.04, best time in the 1/4 was 14.900, so according to you guess my car isnt stock.....

ill post a vid as soon as i figure out how to....

 

Sounds good.