Rawze.com: Rawze's ISX Technical Discussion and more

Ok, I bought this truck about 2 months ago and I have already replaced the imap and delta-p but I am having some issues.

When I use the jake brakes they are kinda weak and make the truck shake pretty bad. Also having low power and low mpg issues. It's only got about 30k on the piston swap recall.
Turbo spools up smoothly to about 35psi when I'm on it. Also, on the flats my mpg's are really good. Not sure what other info may help but thanks in advance!

Oh! 1more thing, I had a good bit of algea when I bought it but I've been treating the fuel with that bio-chem stuff and changing filters.

Mandate still in place? Have you done the egr tune up, change boost sensor & clean out all egr tubing?

Mandate is still in place. Still need to clean all the intake tubes.which is the boost sensor? Is that the temp sensor on the mixing tube?

How much boost on full Jake?

Boost sensor in on the intake, driver's side, sits behind/underneath the wiring harness

(11-12-2017 )Rounded_nut Wrote: [ -> ]How much boost on full Jake?

About 24psi

(11-12-2017 )Squish099 Wrote: [ -> ]Boost sensor in on the intake, driver's side, sits behind/underneath the wiring harness

So the IMap sensor then...right?

(11-12-2017 )Beaver Wrote: [ -> ]

(11-12-2017 )Squish099 Wrote: [ -> ]Boost sensor in on the intake, driver's side, sits behind/underneath the wiring harness

So the IMap sensor then...right?

Single bolt, with slotted hold down, holds the sensor into the intake has plastic "cage" over the sensor tip, could be call imap.. Also the exhaust back pressure sensor on front top side of exhaust manifold..

(11-12-2017 )Beaver Wrote: [ -> ]

(11-12-2017 )Rounded_nut Wrote: [ -> ]How much boost on full Jake?

About 24psi

What rpm is this @ on Jakes? Seems a little low especially if you are @ 1500 rpm.