03CumminZ4X4

Have had my TST on for a few weeks now and I am starting to see what you all are talking about with the TST regular program being lazy under 12 psi boost. I know I can send it back to TST and have it reflashed to the "Twins" program but I still have my stock turbo and think that will kill it. Can I have TST set the fuel to come on at say about 5 or 6psi to get rid of some of the lag and not hurt the turbo. I have the R49 and can limit boost and EGT. Just really dont want to stack a pressure box with it if I can help it. It runs great after 12 psi so I know the thing will scoot if I can have them lower the psi that boost comes in. Just thinking out loud. What do you think? Anyone done this? Thanks.

Smkn600CTD

The lag under 12psi is still there even with the twins program.

06Cummins

best bet is to stack it...

JCLeary

Depends on which twins program you have.

The "Early Twins" program ramps fueling starting at 4psi and is "all in" by 12psi

The "Regular Twins" (which is designed for 04.5 and up trucks, and early 3rd gens with injectors plus a TST) starts fueling at 4 psi and is "all in" by 24psi.

The stock program starts at 12psi and is "all in" by 28psi.

FWIW this is what I was told a couple of weeks ago when I got my twins program.

That said, it sure does help to have a pressure box or downloader to get some off-boost fueling. Everything happens based on boost. The faster you can make it, the faster the boxes fuel.

03CumminZ4X4

Thanks! I think I may try the ''Regular Flash'' I like the sound of 4psi fueling to 24psi. I may end up stacking, but I think I will try this first.