General EFI at start up settings

[Fiatdude]

OK -- at start up on a cold engine

1) Are any of you putting in ignition advance based on oil/head temp and if so, about how much .. AND which are you using oil or head temps????

2) In general terms (probably % wise would be the best) how much richer are you dialing in based on oil/head temp

I'm chasing the tune on my big turbo engine and it is starting to piss me off LOL

I can add 1 sec amounts and 20 sec amounts for general startups and also temp based start ups AND I have a general enrichment based on oil temps

Thanks guys for your input

[miniman82]

What brand system?

[Fiatdude]

Electromotive -- but general setup as far as % over normal should still kinda apply

[Jadewombat]

This probably goes without saying but you are varying spark OR fuel for getting the correct settings at startup, but not both, correct? If you have a good strong spark, I wouldn't try varying it at startup but that's just me. Try just adjusting the fuel settings.

[Steve Arndt]

I will get a screen shot of mine for you.

[Fiatdude]

thanks Steve

[Steve Arndt]

I grabbed a screen shot of my coolant based enrichment. I forgot a screen shot of my cranking and post start up configuration. The numbers shown represent a multiplier factor applied to the base map fuel value. This will likely need more adjustment later as I get my base maps dialed in better.





I had the car starting in 0 degree Fahrenheit weather this winter which is -17 Celsius (off the end of the map like Columbus). BTW my Wiseco forged pistons sound like a diesel engine on very cold startup.

More details. The sensor is installed in the bottom of the cylinder head.

http://myweb.cableone.net/stevearndt/ef ... sensor.JPG
(don't feel like resizing, link to pic)
I will get a shot of my cranking and startup settings too.

[Paul H]

Do you have a "post start" or "start fuelling" enrichment capability as it makes tuning cold start much easier

[Fiatdude]

Yes -- been playing with those settings --

today tried something different -- I turned the key on, let everything cycle through, then sat there for 10-15 seconds, then hit the starter -- -- fired right up -- -- go figure

[Paul H]

Yes -- been playing with those settings --

today tried something different -- I turned the key on, let everything cycle through, then sat there for 10-15 seconds, then hit the starter -- -- fired right up -- -- go figure

Erm Leaky injectors?

[Fiatdude]

The fuel pump is controled by the GPO and it is set at 2 seconds and the regulator is set at 43 PSI -- the injectors were just cleaned and checked by RC eng just prior to this install and all the fuel has been running through a 10 micron filter (E85) -- so I don't think (famous last words) that the injectors are at issue

My setup:::::

SE0: 30%
SE1: 20%
PW0: 4ms
CLT0: 40
ASE0: 20%
ASE1: 0%

My TOG is at 10 with the IOT at .75
but where the engine is idling at I've pulled 20% out from the VE table -- injector pulsewidth is floating between 2.8 and 3 in that area.

Warm-up enrichments is at 80 for 0* and below and then tapers 30@10* -- 10@20*&30* -- then 8@40*