Recent Posts

1

Calibration & Mapping / Re: stall on throttle closing

« Last post by Kamuto on October 20, 2019, 02:15:25 am »

Not sure which setting is causing the problem, if you could take a look please.

Adjustable Fuel Cut Settings.
https://i.vgy.me/krX1nl.jpg

Rev-Limit-Overrun-Safety Settings
https://i.vgy.me/iAFNmy.jpg

Did notice the setting in "overrun fuel cut" is 20kpa, and one of my logs showed 12kpa, so maybe I need to change this?

cheers
scott

fuel resume is too low, make it 1600 or some sort of bigger number, even 2000 are ok.

2

Calibration & Mapping / Re: stall on throttle closing

« Last post by Seight-v8 on October 19, 2019, 06:50:47 pm »

Not sure which setting is causing the problem, if you could take a look please.

Adjustable Fuel Cut Settings.
https://i.vgy.me/krX1nl.jpg

Rev-Limit-Overrun-Safety Settings
https://i.vgy.me/iAFNmy.jpg

Did notice the setting in "overrun fuel cut" is 20kpa, and one of my logs showed 12kpa, so maybe I need to change this?

cheers
scott

3

Calibration & Mapping / Re: stall on throttle closing

« Last post by Kamuto on October 19, 2019, 02:54:55 am »

hello all,

Been driving my 4.6 v8 engine for a few days now finally getting some good data.

A few times though if I am coming to a stop, off throttle, clutch in, and engine stumbles and stalls.....not all the time, sometimes revs drop below 600rpm ish, and then it picks back up.....or a blip on the throttle brings it back, then its fine.

Just not sure which setting controls this area, and as i'm still tweaking the fuel table, but its looking good to about 3.5k rpm area.

Looking at the logs as the throttle shuts, lambda gauge is going lean to 1.83, and revs drop.

any help appreciated.
regards
scott

probably overrun fuel cut holds fuel cut too long

4

Wiring & Sensors / Re: fan control wiring

« Last post by Seight-v8 on October 18, 2019, 06:01:12 pm »

anyone give me a sanity check before going ahead with any wiring.

Fan control wiring for to my VEMS ecu.

https://i.vgy.me/V3vsAw.jpg

thanks
scott

5

Calibration & Mapping / stall on throttle closing

« Last post by Seight-v8 on October 18, 2019, 01:11:23 am »

hello all,

Been driving my 4.6 v8 engine for a few days now finally getting some good data.

A few times though if I am coming to a stop, off throttle, clutch in, and engine stumbles and stalls.....not all the time, sometimes revs drop below 600rpm ish, and then it picks back up.....or a blip on the throttle brings it back, then its fine.

Just not sure which setting controls this area, and as i'm still tweaking the fuel table, but its looking good to about 3.5k rpm area.

Looking at the logs as the throttle shuts, lambda gauge is going lean to 1.83, and revs drop.

any help appreciated.
regards
scott

6

Software / Re: latest firmware?

« Last post by Kamuto on October 14, 2019, 02:16:35 pm »

Cheers kamuto, your a star...….disabled this setting yesterday, and went for a drive.....logging working again.....

Just checked the memory card, and its full of logs, wasn't working on Friday when I drove the car....so must be the "stuffed byte" setting.

Still no logging of the GPS data, but at least I can log data when I drive again.

thanks for your help.
regards
scott

haha, thank you  

7

Wiring & Sensors / Re: strange TPS spike?

« Last post by MWfire on October 13, 2019, 11:18:12 pm »

Noise.
because of that you need to do accel enrichments only after 6.

8

Wiring & Sensors / strange TPS spike?

« Last post by Seight-v8 on October 13, 2019, 09:29:56 pm »

hello all,

Looking at some running logs over the last few day, I see a dTPS/dt spike reading of 4.0, when driving at constant speed on the motorway, so im not pressing the pedal, looks like some kind of signal noise from somewhere.

The min setting of my acceleration enrichment is 6, should I be worried about this spike?.

Seen here at the very bottom of the third row of logs.

https://i.vgy.me/YrG2a3.jpg

Weirdly, does not show anything like this when the engine is not running.

cheers
scott

9

Software / Re: latest firmware?

« Last post by Seight-v8 on October 13, 2019, 09:11:20 pm »

Cheers kamuto, your a star...….disabled this setting yesterday, and went for a drive.....logging working again.....

Just checked the memory card, and its full of logs, wasn't working on Friday when I drove the car....so must be the "stuffed byte" setting.

Still no logging of the GPS data, but at least I can log data when I drive again.

thanks for your help.
regards
scott

10

Wiring & Sensors / Re: fan control wiring

« Last post by Kamuto on October 13, 2019, 08:44:04 pm »

oh interesting....I only have 4 ignition outputs on my ECU board, and they are all in use.....v8 wasted spark....

But I have managed to find a spare IRF640N driver in the kit that came with my ecu…..which should do.

So its not going to be that straight forward.

cheers
scott

yea you can use spare ignition drivers for that too