Timing ATDC

[mstordahl]

How far after tdc are you guys letting the injectors stay open? 42 deg. seems like a lot to me, but im not running a post shot and am curious what some others are running for atdc timing.

Thanks!

[2007 5.9]

My max is 42*...however my post maxes out at 15*ATDC...and it's only there to aid in spool, after xxxxRPM it's gone.

[KDubya]

My max is 42*...however my post maxes out at 15*ATDC...and it's only there to aid in spool, after xxxxRPM it's gone.

How's the smoke at 15* ATDC?? I"ve got post completely off and was just curious if I should maybe put a little in here and there.

[2007 5.9]

For my setup, post is beneficial in killing smoke and getting the charger lit and airflow up.

I was running 90's and a 66mm, and now 180's and a 66mm and with post...I am smoke freeish under most conditions.

[mstordahl]

Thanks for the reply.

So have you found if there is any bennefit to having the main shot last that long after tdc?

I tried cutting it back to 20* atdc and I feel like I lost some power by sop, so I will take it back up to the 42* that it was.

[2007 5.9]

To be perfectly honest...I've never messed with changing it...we found in BETA that it seems to work the best set at 24*.

Guilty of going with the flow...

[mstordahl]

Going with the flow... I know what that feels like!

I will leave it alone at 42* for now, my limiting factor is that I am on stock injectors and am running out of PW to get the fuel that I need. All is well though, I seem to be able to supply more than enough for the poor stock turbo as it is...

[700kenny]

Is (c7002) where you guys control ATDC?

[2007 5.9]

c7001