s2kseven

Do you know what adjustment i need to do to change my AEM EMS to start a little bit better during cold start?
Is it somewhere in my coolant temp parameter?

Summer time, I don't have problem in starting -- but now it's getting cold here in the northeast, i have to crank - crank - crank more crank to start the car.

thank you

tom153

Engine start > Advanced start > Initial crank pulse table

Bump it up in the coolant temp sections which you see on a dead cold engine. Give it three bumps up first and then test again the next morning.

tom153

Also, check your injector pulse width at idle when your engine is warm. Then, adjust your Crank Injector Time table (Engine start > Crank Injector Time table) until your pulse width is about 4 times the amount you saw at idle. Ie. if your pulse width is 2000 uSec at idle, adjust your CIT at 0 throttle and engine off until your pulse width is 8000 uSec. You can see this in the parameters window of your "tuning" tab (Fuel Inj #01 Pulse).

s2kseven

thanks tom - i will try the first one first - if still the same, i will do the second step.
i will do it gradually,

tom153

Sure thing. You kind have to have both set up and then you really tune cold starts with the ICP table.