Staging with DSP??? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Staging with DSP???


jsaddiction
04-09-2009, 03:13 PM
Does anyone know how to set these parameters up? I have been searching for a while now with no avail.

Mike_S
04-09-2009, 03:39 PM
Good luck...the general consensus when I was trying is that the staging tables don't work that well with DSP. I have the PTO pin hooked to the brake switch and set the max PTO RPM acordingly to be used as a staging system...same as "Orange Crush" I believe. Seems to work quite well.

jsaddiction
04-09-2009, 06:03 PM
so while the brake is pressed it will send (i assume) 12v to the PTO input on the computer fooling it into PTO mode. Max PTO rpm would be set to Whatever you want to run as soon as release the brake you will then have full fueling. So could you just push the pedal to the floor and use the brake to help launch.

Am i correct in all of this?? If so how consistant are your runs and what should I expect?

EFI Support
04-09-2009, 07:02 PM
The PTO system has had good reports. The staging system was good in theory, however it doesn't respond as fast as needed. At this stage Ross doesn't have the time to rework it to see if improvements can be made....but like many other things is on the list for when time is available.

Cheers
Cindy

Mike_S
04-09-2009, 09:59 PM
so while the brake is pressed it will send (i assume) 12v to the PTO input on the computer fooling it into PTO mode. Max PTO rpm would be set to Whatever you want to run as soon as release the brake you will then have full fueling. So could you just push the pedal to the floor and use the brake to help launch.

Am i correct in all of this?? If so how consistant are your runs and what should I expect?

You got it. You'll have to play around with the RPM limit, trial and error as the boost is quite sensitive to RPM with a stock turbo. In most cases you don't want to leave the line with 30 PSIG of boost. :D

As far as consistency, I can't really speak for this. Don't have enough track time to give results worth anything. But I know quite a few of the big boys are using this setup with good results.

jsaddiction
04-09-2009, 11:14 PM
Thanks alot for all of the input. Does anyone have any instructions for which wires to splice where and maybe a general setup???
TIA

Black 5
05-25-2009, 11:53 PM
I need instructions as well. Going to the track this weekend and would like to test it out.

Do you have any baselines for rpm/fueling? A good starting point?

jsaddiction
05-27-2009, 09:57 PM
I have yet to try it. I would assume you could start at 1900 rpm and see where that gets you. That is what I try to launch at and it gets me 8.5 in the 1/8mile

killerbee
06-01-2009, 09:10 AM
The staging settings, initially caused me some grief. They will create other undesired hiccups.