Pilot Tuning?

[2006Cummins]

Was wondering if there are any advantages of playing with the pilot injection at all. I have 50hp injectors, so I was thinking about reducing the pilot a little to compensate for the increased fuel, and help reduce smoke. What do you guys think?

Mike

[2007 5.9]

Yep...it will help.

Start with small changes

~Les

[2006Cummins]

Ok. Should I start by subtracting a small percentage (5%?) thru-out the entire pilot pulse table? My injectors are roughly 18% larger than stock - so could subtract up to 18% before injection less than stock? Thanks.

Mike

[2007 5.9]

Start with smoothing of the tables...rid the tables of peaks and valleys...get it more uniform and smooth.

See how that feels...then begin to take away %...you can start at 5% and go from there.

~Les

[2006Cummins]

Roger that.

Mike

[2006Cummins]

I smoothed out the pilot pulse graph a little and then subtracted 5%, 10%, and 15%. It runs fine, but anything over 5% will give me some white smoke if I bring the rpm's up to 2k and let off (while parked). Didn't notice much difference otherwise.

Mike

[2007 5.9]

If you take out too much in the low rpm areas, it disables pilot in those areas and youll get white smoke.

~Les

[AdamRRT]

Hrmm I've got a single event tune that I gives me no white smoke.

[2007 5.9]

Hrmm I've got a single event tune that I gives me no white smoke.

Did you compensate main timing??

~Les

[AdamRRT]

OH is that what you were saying? My bad. I thought you meant ANY single event tune. I'll STFU now. :(