So this weekend..well Friday night and this AM..I installed the following:
-1) Alta Air Diverter with Water Spray V.2
-2) Alta Cold Air Intake with Airbox Top V.2

Watching my 2 year old while Mom is at the store and have the baby monitor in the garage (he is sleeping) so havent gone for a drive yet for impressions. But car starts and clearly you can hear the Intake much more...cant wait to drive.

Here are a few pics:
https://www.northamericanmotoring.co.../P10100351.JPG
https://www.northamericanmotoring.co.../P10100341.JPG

On order I have Randy Webb's:
-1) 15% Pulley
-2) Extreme Swaybar

 

congrats on your new mods... let the modding begin! keep us updated! enjoy

 

Hey, I just installed the same two first mods on my car. LOVE IT. btw, how come you didnt go with matching couplers and hose?

 

cool
how did u hook the sprayer?

 

Awesome.

Matching....I like the contrast of the black and blue

 

Just ran the hose to the passenger side where you can T in to the rear wiper washer hose.

 

did u block the rear wiper washer?

 

I did not..but I may just too keep the car clean.

 

very nice! you should notice some nice gains since its the summer. Which did you do first? The intake or diverter? I cut my hand up real bad installing the alta on the OEM plastic piece while trying to get that silicone hose hooked up and the crankcase hose in place.

 

I did the diverter 1st..and like you came away bleeding on both nuckles. Those Silicone hoses are a pita

 

Yeah, I was gonna say that it would make sense to do the intake first, then the diverter, but no biggie!

 

with 15% I would sugest you also flash a new tune, perferabily a Giac or Dinan.

 

How come going to 15% pulley doesnt necessarly "require" a new fuel map? Wouldnt the car run lean in Open Loop/WOT operation?

 

With smaller pulley your making the SC spin faster and with more air being pushed in to the engine it would require more fuel to burn. You obviously would then need a fuel map/flash that will compensate for the extra induced air in to the engine I would assume. jm2c.

That's my assumption only since with the smaller pulley upgrade works best with the new flash/tune.

 

This is horrible mis-information. The R53 uses a speed density ECU: more air pressure leads to a different location on the fuel table = similar AFR. This was covered about 5 years ago for the MINI. Please do your homework and use the search function before rattling off bad info.

Now, that said; any MINI will benefit from a properly engineered ECU tune. The stock configuration isn't ideal for maximum power; and a good tuner will be able to improve the ECU's parameters for increased power and drivability, regardless of supercharger ratio.

Regards,
Ryan

 

I knew you would come to rescue.

 

 

Thank you! So you are saying that even at WOT that the car will never go in to Open Loop operation which ignores all input from the O2 Sensor? Has anyone instaled a Wideband O2 sensor to confirm a/f ratios look ok w/o tune? I had a Zeitronix Wideband on my Audi S4 along w/ EGT to monitor and fine adjust with adj. fuel pressure regulator. Of course the car was custom tuned here in Colorado by Sportec..so the tweeking was minimal. But gave me the flexiblity to change bits (simular turbos, DP's, headers etc) w/ a new tune.

 

the stock programming for the ecu has A/F ratios dropping below 10 for quite a bit of the RPM range, only getting back to sane numbers as you hit red-line. It's using gas as water injection, and leaning the mixture a bit can deliver real benefits. It's too bad that the search function isn't that great here, otherwise you could easily find all this stuff. Maybe try an advanced search for threads from time past!

There is a problem with overspinning the SC and getting overboost codes, but not with a 15% pulley.

Matt

 

Oh dont blame the search...blame my lazyness

So the A/F ratios truely drop below 10?! Holy crap...never knew they would run that rich...as typically I would run 12:1 ratios with my 2.2L turbo running a GT35 turbo and EGT's never going above 1400.

Thx for the analogy of gas for water injection...no wonder tuners can get more out of the engine

Thx!

 

Thanks for the PM. I apologize for the gritty and rude phrasing. I hope there are no hard feelings. If there's a piece of advice I can offer, it's that it's always good to ask "why" than to just flatly trust a vendor [or an overenthusiastic owner] that's trying to sell you on something.

Regarding air/fuel ratios with s/c pulleys; yes, the car runs virtually the same AFR regardless of boost or pulley with the stock M45 blower. On a stock ECU mapping, the Cooper S runs very rich, in the 10:1 range like Dr.Obnxs said. Only when you get into aftermarket pieces that significantly alter the volumetric efficiency of the engine will you be forced into a custom ECU tune. Such items are the better ported cylinder heads [like RMW, Thumper, Fireballed], a very good full-exhaust [like RMW's], a higher lift and duration camshaft [like Schrick], an M62 supercharger conversion, or de-supercharged single-turbo conversions.

--->cpayne: The R53 goes into open loop mode and no longer looks at the O2 sensors at about 5 pounds of boost, no matter where your right foot is.

 

Hey no problem.

It's great to have well informed posters like youself, Dr.O, Scott, Tuls, Jan and others to learn from everyday. Believe it or not I'm enjoying every minute of it.