Closed Loop Logic, Tipin

K-Series Programmable ECU installation questions / support issues
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pondr
Posts: 1
Joined: Thu Nov 23, 2017 11:57 am

Closed Loop Logic, Tipin

Post by pondr »

I have a few questions about the closed loop logic and Tip-in.

Some facts for my setup (racecar)
-Kpro4
-K24 (stock)
-no speed sensor, fixed 49mph input (just recently added speed input and haven't done any data logs but its working)
-LC-2 Wideband (Analog 2)
-Can output to AIM

Settings
-Closed loop: Max 40kpa
-Use Target Lambda tables

1) Under parameters->closed loop: There are 2 TPSvsRPM high and low tables. The help document says that the low table is the threshold to go from open loop to closed loop. Is this correct? Whats the purpose of these tables. They seem like Max TPS for closed loop, one for high cam and one for low cam...

2) For cold start my AFRCMD is 14.59. Its not attempting to use my closed loop Lambda table. Is this because my VSS signal is saying 49mph? This is my guess and so that closed loop idle logic is defeated. Im guessing with VSS now working it will be fixed.

3) Tip in lean spike: my TPS signal still bothers me. I am a rookie tuner but I dont think I see the tip in fuel working properly. I could be wrong. Also the spike looks like normal wideband delay. I have uploaded the datalog (it might be to big so I uploaded a picture instead). I am aware the part throttle tuning needs a lot of work. What are peoples feedback?
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Spunkster
Site Admin
Posts: 23887
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Closed Loop Logic, Tipin

Post by Spunkster »

1) I believe that the help file is correct.

2) If it is reading 49mph then it will not be in an idle mode.

3) You appear to have a problem with your TPS as it is not smooth and is jerking around a lot.
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