[Diy_efi] Fw: MoTeC for Mini Couper w/ siamese ports

[Phil]

----- Original Message ----- 
From: <bhpdev at juno.com>
To: <philhunt at comcast.net>
Sent: Wednesday, January 03, 2007 9:29 AM
Subject: Fw: MoTeC for Mini Couper w/ siamese ports


> 
>                                                                         
>               bhp  1484 concord ln  bethlehem, pa 18015
> 
> 
> too early for me to fully process but I'm thinking no- what ya think?
> bob g.
> 
> --------- Forwarded message ----------
> From: Simon Wagner <simon at motec.com>
> To: bhpdev at juno.com
> Date: Tue, 02 Jan 2007 16:10:29 -0800
> Subject: MoTeC for Mini Couper w/ siamese ports
> Message-ID: <459AF475.9030909 at motec.com>
> 
> Hello Bob,
> 
> When running the engine on a 360 cycle (all fueling events are completed 
> for the entire cylinder count once per rev) the Motec ECU will fire it's 
> four outputs in the following manner. The first and second output will 
> fire and then 180 degrees later the third and fourth outputs will fire. 
> There would be four ignition events per 720 degrees for the distributor 
> as well. You have the ability to define the injection timing (when in 
> crank degrees before TDC) at which the groups will fire. The injection 
> timing will be the same for each group and can not be made different for 
> each group. So if you specify that you would like the end-of-injection 
> point to be at 270 degrees before TDC then  the first group will deliver 
> it's fuel.
> 
> 270 BTDC fuel pulse ends for outputs 1&2 end
> 90 BTDC fuel pulse ends for outputs 3&4 end (270 before the other TDC)
> 
> Typically you would connect the injector outputs in firing order:
> 
> output 1 = cylinder 1
> output 2 = cylinder 3
> output 3 = cylinder 4
> output 4 = cylinder 2
> 
> Assuming we wire in this manner this means the intake runner to 1/2  
> would have injector outputs 1 and 4 while intake runner 3/4 would have 
> injector outputs 2 and 3. For the above timing and wiring, this would 
> place fuel events in both the 1-2 runner and the 3-4 runner at 270 BTDC  
> and likewise the 90 BTDC would also have both runners getting a fuel 
> pulse. This would happen every 360 degrees.
> 
> Meanwhile the ignition system would be running normally and you'd have 
> full control of the advance curve.
> 
> Does this sound like an acceptable solution?
> 
> -- 
> Simon Wagner
> Motec Systems USA
> 5355 Industrial Drive
> Huntington Beach, CA 92649
> TEL: (714) 897-6804 x 161
> FAX: (714) 230-3075
> 
> 
> 
>