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Rev Limiter Discussion

Thread: Rev Limiter Discussion

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Posts: 61-70 of 70
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2010-05-06 21:27:26
#61
Originally Posted by BenFenner
So it's working on both COP and distributor cars? Your description is a little vague.


Yes.

Originally Posted by BenFenner
Care to explain how you fixed the issue?


I went back to my original algorithm.

Dave
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2010-06-29 14:09:19
#62
Found this little tidbit while searching the mail archives for something else.
Need assistance clearing up a debate please

Originally Posted by Mike
The QR25 rev limiter cuts fuel.

No late model OEM car cuts spark, it would be very
damaging to the cat.

Its common for race cars to cut the spark.

Mike


Thought it was appropriate. And I think it corroborates what we've been talking about here. It's best to cut spark (first) but OEMs don't because of the cat.
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2010-06-29 15:02:00
#63
The way I have it written, you can cut either or both.

Thanks,
Dave
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2010-08-13 18:39:36
#64
Originally Posted by dfddfd2
I've managed to turn the spark cut tach-jump issue into a feature!

Since I have control of the tach without the engine running, I have it setup so you can change the launch limit with the throttle and gear shift. Here's how it works:

1) Put shifter in any gear.
2) Turn on ignition (do not start). The tach will display the current launch limit.
3) Move throttle pedal until desired launch RPM is displayed on tach.
4) Shift to neutral. The new launch rev limit will be set.
5) Return throttle to idle.
6) Start engine.

Notes:
- To skip the process without changing the launch limit, just start engine normally.
- If the shifter is in neutral when the ignition is turned on, the tach does not move, and the launch limit cannot be changed.
- With an RT board, the change is permanent. With a basic board, the change lasts until the ignition is turned off.

Dave


Hey dave I already own a copy of tunercode, how will I get this updated feature?
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2010-08-13 19:16:37
#65
Originally Posted by blo0d
Hey dave I already own a copy of tunercode, how will I get this updated feature?


Darren,
Sent you an email.

Dave
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2010-08-14 04:12:57
#66
x2 on update
Originally Posted by blo0d
Hey dave I already own a copy of tunercode, how will I get this updated feature?


lmk!thanks
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2010-08-14 12:39:44
#67
Originally Posted by klassickrican
lmk!thanks


Dominic,
You've got mail.

Dave
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2010-09-25 02:10:18
#68
Originally Posted by dfddfd2
I've managed to turn the spark cut tach-jump issue into a feature!

Since I have control of the tach without the engine running, I have it setup so you can change the launch limit with the throttle and gear shift. Here's how it works:

1) Put shifter in any gear.
2) Turn on ignition (do not start). The tach will display the current launch limit.
3) Move throttle pedal until desired launch RPM is displayed on tach.
4) Shift to neutral. The new launch rev limit will be set.
5) Return throttle to idle.
6) Start engine.

Notes:
- To skip the process without changing the launch limit, just start engine normally.
- If the shifter is in neutral when the ignition is turned on, the tach does not move, and the launch limit cannot be changed.
- With an RT board, the change is permanent. With a basic board, the change lasts until the ignition is turned off.

Dave


That's pretty cool . Now I usually start my car in gear (pressing the clutch), so that could mess up the settings for anyone else that starts the car like that. What about a little delay, say if it stays on "On" in gear for 2 seconds, etc?
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2010-09-25 02:14:34
#69
Originally Posted by Vadim
That's pretty cool . Now I usually start my car in gear (pressing the clutch), so that could mess up the settings for anyone else that starts the car like that. What about a little delay, say if it stays on "On" in gear for 2 seconds, etc?


As soon as you turn the key to start, Set Launch mode is canceled and no changes are made. Also, if you don't mash the gas pedal within 5 seconds, it is canceled.

Dave
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2010-09-30 15:13:47
#70
Sweet, that sounds good enough then
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