Cold Start Enrichment

Decipha's custom GUFX strategy covers all 89-93 foxbody ecu's including the 88 mass-air california ecus.
auscob07
Posts: 17
Joined: 2021 Feb 27, 06:15
Location: Palm Beach
Vehicle Information: Cobra. 5.0. TFS Heads and cam. MassFlo (ProM) EFI.

Cold Start Enrichment

Unread post by auscob07 »

Assuming I have my fuel, load and idle all dialled in, how can I sort out my cold starts. Of course I have read the write up a number of times and know that I am going to need to see a richer mixture for a few minutes (to op temp) and even richer for the first few seconds.

Is it possible to sort this without a wideband? Do the narrowband HEGOs report enough to use the calculated FE% in TPRT while the are completely cold?
decipha
Posts: 4952
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: Cold Start Enrichment

Unread post by decipha »

you simply give it more fuel and see if it likes it or not
auscob07
Posts: 17
Joined: 2021 Feb 27, 06:15
Location: Palm Beach
Vehicle Information: Cobra. 5.0. TFS Heads and cam. MassFlo (ProM) EFI.

Re: Cold Start Enrichment

Unread post by auscob07 »

Easy, thanks.
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