Banks Power - Exhaust, Intake, Tuner

zouch

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3K miles? i thought i had the worst when my CP4 grenaded at 4100 miles!

yes, it took more than a couple of months for J**p to get all the parts together to put it back on the road, even with @JeepCares involved.
to their credit, there was no attempt whatsoever to deny coverage and everything was handled under warranty (eventually). good thing, because repair estimates were over $15-20K to replace the entire fuel system.


<snip>

The CP4 injection system in these diesels routinely blows up on its own. Repairs can be $8,000 to $12,000. Manufacturers do everything they can to get out of covering it under warranty. I just saw another guy post about his this morning. So in my opinion, purposefully jacking around with the fuel flow on these is just asking for trouble.

I may wait for a safer, more tested option like the GDE tune.

EcoDieselcp4.jpg
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This is the derringer underreporting fuel pressure to trick the fuel system into pushing 20% extra fuel

Mine was doing this before they added the new firmware . 34.4 psi boost and 36,000 psi fuel pressure
Strange, mine still gets 29K psi on both commanded and actual fuel pressure with the the posted firmware
 

letzgostate

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Have you tried installing? I've watched the install video several times. My fuel rail sensor is upside down from what's shown in the video making access to the tab almost impossible. I can just barely touch the tab but can't curl my fingers enough to put any pressure on it. I can't push the red lock back. Actually, I can even see the red locking tab. Is your orientated with the red locking mechanism on the top like shown on the installation video?
I had my wife install that sensor for me. Her dainty hands sure helped!
 

thance

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Mine was doing this before they added the new firmware . 34.4 psi boost and 36,000 psi fuel pressure
Are you saying with the derringer you're running 34.4 psi boost? What is it stock? I know the previous gen2 was only around 20psi.

i have an eco diesel in order and already have the derringer in the garage.
 

GSLSE21B

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Are you saying with the derringer you're running 34.4 psi boost? What is it stock? I know the previous gen2 was only around 20psi.

i have an eco diesel in order and already have the derringer in the garage.
New derringer firmware is 33.4psi , stock is 28.
 

thance

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New derringer firmware is 33.4psi , stock is 28.
Thanks, that helps with some other changes i am planning. Is there a chart anywhere that shows either stock or tuned psi vs rpm over the full powerband?
 

GSLSE21B

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Stock map starting at 1700 rpm cruise
Thanks, that helps with some other changes i am planning. Is there a chart anywhere that shows either stock or tuned psi vs rpm over the full powerband?
 
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