When stacking a timeing box like an EZ and a fuel box like a TST, which one would you plug directly into the map sensor. Or does it matter.

 

When I stacked mine I had the edge plugged in first then the TST into that. Seemed to work just fine. I don't think it really matters but I just thought the timing fueling box first would be better.

 

It can matter a great deal.

If one clips the MAP too low, the other box would be fooled into thinking the truck is not at power.

When I stacked my TST and EZ, I ran the EZ first as the TST did not appear to need as much signal.

Dave

 

plug the TST in first. it fuels more with a higher boost signal. when I had that stack I didnt even realize until I got the remote with gauges. the boost never went over 17psi. when I switched them it made a difference. the boost would read 35+ on the tst gauge.

 

I have a friend running that stack and it is working out great for him.