Search found 9 matches

by sivo535
Thu Sep 01, 2022 3:02 pm
Forum: K-Pro / KManager
Topic: Weird MAP sensor issue
Replies: 20
Views: 8242

Re: Weird MAP sensor issue

If you have the ITB ALPHA-N mode on, the signal from the MAP sensor is ignored. The ECU does not search for it or solve it at all, it relies on the TPS -> MAP conversion table and guesses the values of the MAP data from this table. That's why your MAP values change with the engine off and the ...
by sivo535
Tue Aug 30, 2022 11:03 am
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

Re: K24A3 & 310ccm cold engine jerks at low throttle

Yes, I managed to run the map with TSX on the PRA controller with euro civic type r. It is already reasonably tuned, only the fully open throttle is fine-tuned when there is no time to run to the dyno. The engine has already driven 30,000 km, after 4 oil changes and a check of the throttle body and ...
by sivo535
Tue Aug 09, 2022 11:24 pm
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

Re: K24A3 & 310ccm cold engine jerks at low throttle

At the beginning, I tried the original, which Hondata's offer for the K24A3 engine is included in Others, but I didn't really like it when I found out that the VTEC turns on this map already at 1800 rpm. so I looked at the map with the TSX and that was a better basis, so I tried the map with the TSX ...
by sivo535
Sun Jul 24, 2022 7:45 am
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

Re: K24A3 & 310ccm cold engine jerks at low throttle

So problem solved. The problem was in the wrong setting of the corrections and the fuel pressure regulator after disconnecting the negative pressure gave a higher pressure than it was originally set, therefore the map was 10% out of the optimal ratio and since the engine is in open loop mode when ...
by sivo535
Tue Jul 19, 2022 10:37 pm
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

Re: K24A3 & 310ccm cold engine jerks at low throttle

That's not an explanation. Since HONDATA supports ecu with PRA code, it must have treated behavior.
I would like someone from vivo to explain to me why AFRCDM tells edu to set the ratio to 14.7:1 as soon as it goes into closed loop already at a temperature of 25°C. If anyone knows where this course ...
by sivo535
Tue Jul 19, 2022 2:57 pm
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

Re: K24A3 & 310ccm cold engine jerks at low throttle

It is a SWAP K24A3 with a gearbox in a Z4 case, but the gears are from the original k24A3 6-speed manual, Injectors are 310ccm with K20A2. The exhaust pipes are still original, but the continuation is a custom-made stainless steel exhaust with an end muffler with an electronic valve that switches ...
by sivo535
Tue Jul 19, 2022 10:41 am
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

Re: K24A3 & 310ccm cold engine jerks at low throttle

But I don't have an S2000 or a PRB unit, I have a single PRA where both inputs are on O2 narrowband and I say that the closed loop is running and even the AFR that I monitor after warming up is fine, the only problem is when the engine is cold. When the engine warms up, it runs fine according to the ...
by sivo535
Tue Jul 19, 2022 9:22 am
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

Re: K24A3 & 310ccm cold engine jerks at low throttle

Why secondary O2?
For me, the system runs in a closed loop, I use primary O2 and so far everything has worked and is still working, the only problem is when the engine is cold.
Early on, the ECU instructs it to go to 14.7:1, even if it has a low temperature.

Explain to me why it is necessary to ...
by sivo535
Tue Jul 19, 2022 7:12 am
Forum: K-Pro Calibrations
Topic: K24A3 & 310ccm cold engine jerks at low throttle
Replies: 14
Views: 5005

K24A3 & 310ccm cold engine jerks at low throttle

Hello, have you met anyone with the fact that even in ekd the maps are relatively well tuned to +- 5% that a cold engine jerks at low throttle? It only happens until the engine reaches approx. 65-70°C. When the engine is warmed up, the engine no longer jerks, and the AFR also sits beautifully. The ...