Jerky shift daily drive

2012+ US/Canadian Civic Si / 2013+ ILX
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bian.yy
Posts: 48
Joined: Tue Jan 12, 2016 6:04 pm

Jerky shift daily drive

Post by bian.yy » Mon Oct 02, 2017 5:59 am

Hi Hondata

My car is stock 14 SI.
Could you check why my daily driving shift are very jerky.

1 throttle release on gear 1 and 2 suddenly brake the car, I have already tuned slightly injector cutoff with a little help only.
2 injection time when clutch pedal pressed varies refer to unstable Tplate.

My purpose is to have the most daily driving smoothness between shift gears.
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2017100200.fpdl
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Read_SI.fpcal
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pepperdanky
Posts: 81
Joined: Mon Oct 14, 2013 6:14 am

Re: Jerky shift daily drive

Post by pepperdanky » Mon Oct 02, 2017 6:11 pm

Try this. Using VTC tables during overrun should smooth tip-in and I adjusted the overrun MAP pressures to smooth tip-out. You may notice some more rev hang but you can probably put the fuel cut delay lower or back to stock without having much effect on the jerkiness.
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Read_SI_edit.fpcal
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bian.yy
Posts: 48
Joined: Tue Jan 12, 2016 6:04 pm

Re: Jerky shift daily drive

Post by bian.yy » Tue Oct 03, 2017 4:08 pm

Hi Hondata

If I am using vtc table to control decel, do I need to set column 1 and 2/1250RPM up to a proper degree or just leave it with 0 as is.
I will try this map and feedback you. thank you very much.

bian.yy
Posts: 48
Joined: Tue Jan 12, 2016 6:04 pm

Re: Jerky shift daily drive

Post by bian.yy » Wed Oct 04, 2017 4:58 am

Hi HD
I tested your cal it didnt help. I put cut rpm to 3000 it get more better for low speed go and stop driving.
Do you have any other reminder?

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