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Alan

2003 MINI Cooper S GTS race car

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Hello,

Here is the tune file for my 2003 MINI Cooper S that I race in GTS with NASA (National Auto Sport Association) and BMW Club Racing.

https://drive.google.com/file/d/1JVhjpeVhWHSubJpOya5x56rsSomkDuUw/view?usp=sharing

It is a stock MINI engine with 50 thousands over 9.3 to 1 compression pistons.  Stock cam advanced 10 degrees on a Endyn big valve head.  The SC is running the stock pulley producing 10 psi of boost max.

It is a power to weight class so we attempt to get a flat HP curve, thus the unusually timing curve.

Questions / Suggestions welcome.  I am the tuner and still learning.

Alan

MINI 031 Dyno Graph.jpg

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Hi Alan, what power you trying to achieve? to get the torque up but keep the power low you could fit a camshaft with more lift and duration,then run a restrictor, This way you'll get more power and torque down low and stop it making loads up top.

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Thanks for the feedback!

The dyno curves above give a 140 HP "average" using the GTS calculator.  I can make 148 HP "average" and still be in GTS1.  I have just fitted the KAVS JCW pulley in place of the stock size pulley.  This should get me to at least the 148 HP "average".  I'll know for sure by mid March.

What cam are you thinking about?  I was thinking about replacing the stock cam with Cat Cams  257 / 259 (street) cam.  This is supposed to add low and midrange power.

I was planning on restricting max HP via the E-throttle map.  You mentioned using a restrictor instead?

Thanks again!

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With a 11% pulley you'll probably pick up 10-15hp easy, You talking about the "461" Catcam? Down low it will make the same as a "469".

Throttle is a good idea to restrict the air flow. 

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Yes, I am talking about the 1302461 Catcam.

And thanks for confirming throttle is good for restricting air flow. 

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