Stock Problems/Issues Discussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Cooper (R50), Cabrio (R52), and Cooper S (R53) MINIs.

throttle responce

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Old Sep 19, 2004 | 06:11 AM
  #1  
nocivic's Avatar
nocivic
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2nd Gear
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From: YORKTOWN, VA.
throttle responce

Hello, I have a question for the MCS. today was the first day I've seen my MCS because it arrived in June and I was under way on a 7 month deployment, so the wife has been having all the fun The question that I have is concering the throdal reponce. It seems to have a slight delay and feels as if she is struggleing for fuel for a slight second. Can anyone give me some input. PS. she seem to be a little better after warming up......
 
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Old Sep 19, 2004 | 06:45 AM
  #2  
holdenontoit's Avatar
holdenontoit
6th Gear
Joined: Aug 2002
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From: north seacoast ,Ma.USA
Welcome home and thanks for the effort.We all really do appreciate what you guys do.And welcome to Nam.It would be helpfull to know a little bit about your car,but what you describe is something that quite a few people experience,called the "stumble",a software issue.Make sure you warm up the car for a few minutes before launch ,and if it continues,bring it to the attention of your dealer.Usually the stumble is associated with a cold start issue,where the car will only start on the second try.If you have this probem also, there are software upgrades available for your ECU (computer) under warrentee.Let us know what month and year your car is.I personally run my car with the DSC off (if you have it). I find this helps a lot with the issue you describe.I live in the Northeast and DO run with the DSC on when the weather turns to crud,and it has saved my butt on several occasions, so don't just leave it off all the time.With it on , if the computer detects any wheel slipage, it will shut power for a second until the control is regained. Not saying this is the problem, but it might be.Good luck, Jock
 
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Old Sep 19, 2004 | 10:03 AM
  #3  
kenchan's Avatar
kenchan
6th Gear
iTrader: (3)
Joined: Sep 2003
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Hey thanks for your efforts out there. I think you mentioned you were in
the Navy, correct?

Anyway, regarding your motor's response, it is slow because the flywheel
is heavy on our MCS. But after about 100miles of you driving
intead of your wife, your car will adapt to your driving habits and
will improve a little bit to your liking.


Originally Posted by nocivic
Hello, I have a question for the MCS. today was the first day I've seen my MCS because it arrived in June and I was under way on a 7 month deployment, so the wife has been having all the fun The question that I have is concering the throdal reponce. It seems to have a slight delay and feels as if she is struggleing for fuel for a slight second. Can anyone give me some input. PS. she seem to be a little better after warming up......
 
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Old Sep 19, 2004 | 10:17 AM
  #4  
minihune's Avatar
minihune
OVERDRIVE - Racing Champion
20 Year Member
Joined: Feb 2003
Posts: 15,262
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From: Mililani, Hawaii
nocivic,
Glad you are back safely and thanks for your service to our country.

We have had past threads about the lag of the throttle response in the MCS.
It seems a slower throttle is common especially in the lower rpm ranges.
The computer also can be contributing as mentioned already.

Try shifting out of first by 3000 rpm and while in second stay a little longer like 4000 rpm before shifting. That will likely give you more power in the mid rpm ranges than if you shift to third early and then you're bogged down by low rpm and a slower throttle response. Once you learn to drive alot more in the 4000+ rpm range then I have found that the throttle response is quite good.
 
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Old Sep 19, 2004 | 01:45 PM
  #5  
nocivic's Avatar
nocivic
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2nd Gear
Joined: May 2004
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From: YORKTOWN, VA.
Thank you for all the support. I'll look at everything and if it keeps up I'll take it to the shop... I just finished putting on some new H&R full coilovers and a set of 18" 7.5 with a + 45 offset, and NO rubbing with the tires tucking. again thank for everything.
 
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Old Sep 19, 2004 | 07:38 PM
  #6  
JCIP's Avatar
JCIP
2nd Gear
Joined: Apr 2002
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From: Kona Hawaii
Another thing that you may be experiencing is the 'drive by wire' difference, since your acceleator is not a mechanical linkage. Some people are sensitive enough to detect the difference.

You may also be sensitive to the low end torque threshold on the MCS. Most cars don't require the additional revs an MCS does. You pretty much want to stay above 2500 rpm. 2800 rpm is about where the supercharger kicks in, and you can feel the difference. That is why supercharger pulley modifications are so popular. They allow more torque to occur lower in the rev range, hence better pick-up.

Good luck and enjoy your new baby!
 
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Old Sep 22, 2004 | 02:36 PM
  #7  
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JohnMonk
Coordinator :: Nashville–Middle Tennessee MINI Club
Joined: Aug 2003
Posts: 500
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You may also want to consider trying a Dinan throttle body.
 
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Old Sep 22, 2004 | 04:31 PM
  #8  
SpiderX's Avatar
SpiderX
6th Gear
Joined: Sep 2004
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Why

Originally Posted by JohnMonk
You may also want to consider trying a Dinan throttle body.
I am interested in a throttle body mod but I have no real info on performance difference
 
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Old Sep 22, 2004 | 05:30 PM
  #9  
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JohnMonk
Coordinator :: Nashville–Middle Tennessee MINI Club
Joined: Aug 2003
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I've driven one with Dinan S1 like mine plus the throttle body and there was a noticable difference in throttle responce. I'm not sure what the actual hp gain is but it's real purpose is responce.
 
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