Everyone having problems with the start on the evo we think we've found the cure ..

Go to setup / sensors / cam crank sensor / advanced cam/crank


Under the options pull down ..

Where it says " Tooth time min " enter 500 ms

Where it says " Sync early " check the box ..

Let me know

Mark
Turbotrix

Big thanks to jason siebels from aem ... for helping with this on going prob

 

Oh man thanks! That will certainly help me later when I get an EMS! Woohoo!

 

That made no difference for me...

 

Dutch ..

try leaving the key in the one postion for about 3 sec,,then crank. Also in the engine start menu, set your fuel pump to prime for 3-5 sec. Try that ,,, what i noticed is ..it will take about 1 sec to sync for about 6 trys ..then on the 7th or 8th ..it will go back to 4 sec ... let me know

Mark
Turbotrix

 

Works awesome!!!! I was already fairly happy with my start up as it would start after 4 or 5 turns and then come to idle perfectly even in cold conditions, but with this now it starts on the first crank!!! Sweet!

 

For what it's worth I think this is more of a fine tuning detail. If your initial crank and warmup maps aren't set up near perfectly then this won't really help all that much with start up in my opinion. The AEM has taken a little while to tweek the driveability, but I can honestly say that the car has at least as good if not better than stock driveability.

 

I think you are exactly correct. You can maximize your startup crank by having all of the maps fine tuned in correctly first. But this will probably help along the way in addition, you just can beat good free information though so thanks for that!

 

These settings definitely can make a difference. Go ahead and try it everyone, just be sure to tune your maps well first.

Dave

 

I've tried this setting. Sometimes it starts in three crank rotation, sometimes six. Kinda annoying.

 

I don't know what that setting does, but with the options stated above my car now turns over in 2 turns 99% of the time. The Fuel and timing tables have to be setup pretty darn well to get the car to turn over easily.

 

new setting works for me, I've been driving on it for a week, and always has quick start up.
its a little different than what I originally posted. But noones interested since all your cars already have quick start up.

 

EVO 8 HARD TO START AEM EMS 1313U WITH 3.5 BAR MAP SENSOR. Go to setup / sensors / cam crank sensor / advanced cam/crank


Under the options pull down ..

Where it says " Tooth time min " enter 500 ms

Where it says " Sync early " check the box ..

DID NOT HELP ANY OTHER IDEA

 

any idea on fixing my cold start?

it goes from 1500 rpm drops down to 500rpm, goes up and down until the engine warms up...

I don't know which setting this is doing..

 

worked for me!!! Thanks TT

 

cold start fix:
+ more fuel at warm up enrichment
+ Optima red top battery


that seem to work fairely well.