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 Post subject: Cold start for a PSA engine on throttle bodies
PostPosted: Mon Mar 06, 2017 1:37 pm 
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Joined: Tue Sep 06, 2011 4:53 am
Posts: 130
ECU Model: S40 Pro
Hi guys, got an S40 on a stroked and overbored XU10 block, its nearly a 2.2.

Having issues with the cold start, it hasn't been mapped yet but I do have a decent main fuel map from an older engine spec that had milder cams and only a 2.0.

The cold start seems particularly rich but I have no idea what values to try in it, it will be mapped in a few weeks but I do need to try and get an MOT on it and be able to get it on a trailer, with it fouling plugs and misfiring thats not easy!!


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 Post subject: Re: Cold start for a PSA engine on throttle bodies
PostPosted: Mon Mar 06, 2017 5:04 pm 
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Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2882
Location: Norn Iron
ECU Model: No ECU
What values ? if its too rich, less fuel.

Dont overcomplicate it.


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 Post subject: Re: Cold start for a PSA engine on throttle bodies
PostPosted: Tue Mar 07, 2017 6:23 am 
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Joined: Fri Feb 28, 2014 1:03 pm
Posts: 1065
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79
Just reduce the value in the Engine Start Fuelling map, not the main fuel map.
You can zero them out, and just keep the throttle open if you want to.


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