Drivetrain (Cooper S) MINI Cooper S (R53) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain Dyno results of my car (RMW head, cam etc.)

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Old Oct 22, 2008 | 04:19 AM
  #26  
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PGT
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From: DC Metro
Originally Posted by gnatster
Ya'll need to stop this sniping at each other. Why not be productive and help the guy out.
.
hey, I tried to help. If all others have against me is not being a MINI owner anymore (for all of a week now), we're doing pretty good.

pull the Unichip, do JCW injectors and a JCW tune and I suspect you'll make more power everywhere. Ask your tuner what variable the Unichip can handle for fuel trim. You're dealing with injectors 33% larger (330cc vs. 440cc) - if the base tune is for 330cc and the Unichip can only manage a max change of 25%, your injectors are larger than your ECU solution can effectively manage and this is Problem # 1 to fix.
 
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Old Oct 22, 2008 | 08:05 AM
  #27  
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Mike S
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Originally Posted by D-MAN
Mike take the car to the dyno you got your pre tune numbers from than take it from there...
I had to get 2 different tunes on my car after the head install to get it putting out decent power due to a tuner who had no idea how to tune a mini.
One other point is that there are piggyback type ECU's that will work for mini tuning. I am running a Haltech interceptor with great results and I know of guys running Moristech piggyback units that also work.
Hi D-man, I will do that. Had some more bad luck today. The header tank cracked and leaked fluid everywhere! So I'm getting a new tank made up at our workshop from aluminium. As soon as that's in I'll be heading to the dyno.
 
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Old Oct 22, 2008 | 08:06 AM
  #28  
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Mike S
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Originally Posted by PGT
hey, I tried to help. If all others have against me is not being a MINI owner anymore (for all of a week now), we're doing pretty good.

pull the Unichip, do JCW injectors and a JCW tune and I suspect you'll make more power everywhere. Ask your tuner what variable the Unichip can handle for fuel trim. You're dealing with injectors 33% larger (330cc vs. 440cc) - if the base tune is for 330cc and the Unichip can only manage a max change of 25%, your injectors are larger than your ECU solution can effectively manage and this is Problem # 1 to fix.
I'll give it a try, can't hurt. Thanks for the input.
 
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Old Oct 23, 2008 | 08:14 AM
  #29  
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Mike, you confuse me one step at a time man. Eliminate the variables so that you stop running around in circles.

Simple phone calls to the dyno operator of this recent dyno and your last dyno is somewhere to start. You need to find out if these numbers are uncorrected for one, as we talked about before, that will skew your numbers quite a bit. Finding out what your Unichip can handle. Get a Air/fuel ratio print out if you can (if they did one) from your dyno so we can see how rich/lean it is running.

Consider building a boost leak tester

Did you do a compression check yet? Leak-down?
 
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Old Oct 23, 2008 | 09:09 AM
  #30  
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we are very close to having an adjustable fuel pressure regulator system done that will allow you to set the fuel pressure lower and give correct scaling with the 440s so that way its easy to trim the car

shouldn't be much longer
it will come with a new fuel rail to allow more hp adders in the future along with the quick change to return style if you go really big
 
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