I made a boost fooler. Image is pending approval in my gallery. Basically consists of 2 resistors , connection block, a douple pole single throw relay , an in cab switch, and some wire. It works great for towing w/my rv275's and disabled waste gate. I also have a little more low end when foot is on the floor. If Foot is not on the floor, no real difference.

The 2 resistors combine to allow 2.54 volts to go to the ecm at the flip of the switch, so it thinks it's got full boost.

 

too smart for me...

what kind of boost do you see with the 275's??

 

Towing it will run around 28 - 30 psi.

 

How about a wiring diagram? Thanks.

 

I made a really rough sketch of the wiring. I am pretty sure that the MAP wire to tap is the grey/orange wire. I have had this installed for a couple months now, wanted to test it good before posting. It works really well, and cost less than $25.

Ph, the skeych is my photo gallery.