Hi! new to the O/O scene

First let me introduce myself...

They call me by many names, I answer to all!.... but mostly Philip...

First truck I drove was an International , cab over with a 5/4.... so many yrs ago (45yrs later) I can't remember...... It did however get me through school and into an alternate profession...

I am now retired, and have joined my son in an O/O situation. He rolls the rubber and I the remainder of the Co.

WE have an 07 FreightLiner, ddec 5, 14L with an Fuller ultrashift. When we acquired the rig it had (500K mls) 850K kms, well looked after, but the fuel consumption was horrendous (4-4.4mpg)...

After much research, I cobbled together (The slug) an EGR/atmospheric eliminator (thanks to many on this forum).
The truck now runs substantially better, no smoke/stumble, much better economy (6-7mpg)..

My son (Jason) now reports an issue, with the slug installed, he has very little "Jake action" and since we have very steep/high mountain roads in this region he has asked if there is a way to induce the Jake to work better.

NOTE: with the OEM sensor there is enough Jake to slow the truck on these steep declines..

Regards, Philip