Honda FIT (GK) Throttle Blip

[wilibee]

Is it possible to configure [throttle blip] function during down shift with STD H gear box on HONDA FIT (GK) ? 

[Adamw]

You will need some means of indicating a downshift event. This is difficult with an H pattern gearbox as the direction of gearlever force can be in either direction. The ecu can’t tell whether you are doing an upshift or downshift.

Downshift Blip really needs a sequential shift pattern to work.

[wilibee]

Thanks for your reply.
Now, we wiring [clutch] and [brake] signal switch then input to [digital input], so the ECU know we are going to downshift, but another question which is how to setup the [gear shift control] to let the throttle blip active? 

[Adamw]

A clutch switch will not be suitable to activate a downshift blip since you will also use clutch for upshifts, stops, etc.  a brake switch is not suitable either as you often brake without shifting. 

Even if you wired them in series so  both clutch and brake need to be depressed together then you would get a blip on start line and every time you engage a gear from neutral etc.

 

[wilibee]

Thanks again, That exactly what I’m doing , it is fine for the neutral as a race car.
So, can we use [RPM lock out] to control when the blip active, likes over 3000rpm.

[mapper]

Why not make a logic with some virtual aux? Wire in clutch and di seprate and stack as mani virtual aux togehter as necessary to cover all conditions? 

Think that is should work. 

Ecutek has this feature on many cars with OEM ECU. So think this should be possible also with LINK. 

1:40 in the video 

https://youtu.be/oTX2kJ93inI

 

[wilibee]

Hi Mapper, Thanks for your reply. I think it should work properly. But I'm new with LINKECU, not sure how to setup and let the blip active

[Adamw]

Try the basic setup below.  Set "upshift digital input" to the DI that is connected to the  Clutch switch.  Leave downshift digital input set to off.

The gear detection/gear ratios will need to be set up and working first.

With these example settings below; when RPM is >3000 & <9000 & TP is <30%, you will get a 25%throttle blip for 100ms everytime the clutch is pressed.

 

Note, upshift gear cut will not work if you have brake switch in series, I would try using just clutch switch only initially and only add brake switch if needed.

[mapper]

Just a note, if your engine has hydraulic lash adjuster and/or catalytic converter, be careful with pob and bangs from ign cut. I would try fuel cut instead of ign cut first. 

 

[h82lose91]

On 1/9/2018 at 5:15 AM, Adamw said:

Try the basic setup below.  Set "upshift digital input" to the DI that is connected to the  Clutch switch.  Leave downshift digital input set to off.

The gear detection/gear ratios will need to be set up and working first.

With these example settings below; when RPM is >3000 & <9000 & TP is <30%, you will get a 25%throttle blip for 100ms everytime the clutch is pressed.

 

Note, upshift gear cut will not work if you have brake switch in series, I would try using just clutch switch only initially and only add brake switch if needed.

Trying to get this setup on my subaru, any chance you can share the PNG file again.  Theres a company that makes a piggy back box that just ties into the clutch and brake switch to do this for downshifts on dbw cars. 

[Adamw]

If you have both clutch and brake inputs already connected to the ecu I would do it a bit different than I suggested above.  What ecu do you have?

Is it a synchro gearbox?

[h82lose91]

WRX104 G4+, and yes clutch and brake switch inputs are already wired.  Brake Switch is DI5, Clutch is DI6.

[Adamw]

Example below, use a virtual aux so that when both clutch and brake are pressed and throttle isnt, it triggers a down shift event.  Set upshift DI to DI11 or a virtual aux that isnt used so that it never activates.

It will probably need more throttle and time than the example below, but start small and increase from there.  You can also try the predictive end mode, but shift end usually works fine.