Throttle tip in rich dip

K-Series Programmable ECU installation questions / support issues
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futureal33
Posts: 48
Joined: Wed Apr 21, 2021 11:28 pm

Throttle tip in rich dip

Post by futureal33 »

Hello,

I'm trying to fine tune my car now that I am happy with the fuel tables being correct, within a few % in most cells, I am still getting issues with two types of tip in throttle giving me a rich dip

Throttle tip in during acceleration
and
Throttle tip in during a throttle blip / heel & toe gear change

The AFR is dipping as rich as 10/11 AFR momentarily before going back to target AFR.

I have currently got negative values of -30 in the TPS Fuel Moving Tip In section (the basemap was +7)for all cells (Rate of change 4, 8, 16) and this has helped it, but I am still seeing quite excessively rich tip in.

Is this normal and is it desirable to have a rich dip on tip in?
Also, is it normal have such neegative values in the TPS Tip In ?

Also - another question

There are two different TPS Throttle Tip In corrections in the K Manager:

TPS Stopped
TPS Moving

When exactly does TPS Stopped apply - is this literally with the car stopped with zero momentum?
I assume TPS Moving is for anything where VSS is greater than 1mph?

I attach a section of datalog that is showing what I mean

Thanks in advance for any help
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Spunkster
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Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Throttle tip in rich dip

Post by Spunkster »

One is for when the vehicle is not moving. The other is for when it is moving. Have you set your injector dead times correctly?
futureal33
Posts: 48
Joined: Wed Apr 21, 2021 11:28 pm

Re: Throttle tip in rich dip

Post by futureal33 »

Yes, I have used the drop down menu for Honda RDX 410cc injectors, which my car is using.

Just to confirm - the TPS Not Moving is just for fine tuning tip in fuel compensation when revving at idle?
Thank you
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Spunkster
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Posts: 23878
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Throttle tip in rich dip

Post by Spunkster »

Yes and starting from a stop
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