Returned it and bought the Edge Products EZ. Hooked up the same way but it actually works.

It doesn't make a difference.

What if it does?

Just installed an extreme power puck on my FL50 Freightliner 5 speed manual with a CAT3126. Engine cranks forever before starting cold. Does not want to start when warm and it tops out at 35MPH with absolutely no power. SES light(don't know what for & not going to pay to find out). If I unplug the ...

Why don't you just answer his tech question?

ICP pressure high active code. Long start times. Remove Power puck code and problem goes away. Called yesterday and left message with tech and phone number. But got no response.

I am having this same problem. 2000 Freightliner FL50. Cranks 3 to 5 times longer & truck has no power with power puck ...