Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

Slow RPM drop

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Old Jun 29, 2012 | 03:00 PM
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Default Slow RPM drop

It seems like when I shift the rpms take to long to go down. Say when I shift from first to second, or any other gear, I can still feel the rpms when I shift. A little too much, makes it harder to shift. Anyone know whats wrong?
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Old Jun 29, 2012 | 04:56 PM
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Is the motor stock? There are tables in the ECU (cracker/follower) that control the RPM drop under various situations. Like on/off throttle, take off, clutch in/out and neutral off throttle from high RPM. They are usually modded when you add a lighter flywheel to compensate for the less inertia of the flywheel. If it is dropping to slow to your liking you can pull air from the follower table. Small baby steps. One 1g/cyl can make a huge difference. You have HP TUners, EFI Live or some other tuning setup to do so.
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Old Jun 29, 2012 | 06:06 PM
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Stock as far as I know but I am not the first owner. Going to have it tuned sometime, it should def help
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Old Jun 29, 2012 | 07:42 PM
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Even a stock car can see gains from a tune. The factory runs things REALLY safe. Just tell the tuner that you want the rpm's to drops a little faster and they should be able to hook you up.
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Old Jun 29, 2012 | 09:06 PM
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This might sound really really dumb, but it could be as simple as your A/C. I always have that problem when mine is running. I don't know where you live, but down here we've been in a nasty heat wave. If you just recently noticed it, it could be the problem. It always makes my shifts a little jumpy too.

Or its entirely possible that your A/C is switch or relay is shot and it's stuck on. Even though there are failsafes for that...
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Old Jun 29, 2012 | 10:57 PM
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A/C was on, even though its not blowing too cold at the moment lol. I thought it could be that and yes... heat wave here too, been 100+ for a while here in Missouri with no rain. :/
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Old Jun 30, 2012 | 01:33 AM
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Originally Posted by Sladester2
A/C was on, even though its not blowing too cold at the moment lol. I thought it could be that and yes... heat wave here too, been 100+ for a while here in Missouri with no rain. :/
Cut it off, see what happens. Maybe it really was that simple XD
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Old Jun 30, 2012 | 04:19 PM
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I posted this same question in the tuning section and got told a bunch of ignorant BS by a bunch of self proclaimed know-it-alls. I ended up going to my tuner and having the problem fixed. I don't know the exact term but it had to do with the crack throttle tables or some mumbo jumbo. Anyways it's super easy for the tuners to fix this problem
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