CATCRD wrote:
Threeweight wrote:
I'm weighing the pro's and cons of Inmotion vs. a quality performance module (Edge Trailjammer, SP Stage I, BD, etc...) Since my CRD is my daily driver, I don't want to be without it for several days. I'm also concerned about Inmotion and passing future emissions checks.
Is there really any difference between Inmotion and a quality module that adjusts timing, boost, duration, as well as fuel pressure?
There IS no module that adjusts timing, boost, duration, and fuel pressure. Most of these modules only plug in line with the fuel rail pressure sensor. If this is true, the only parameter you can adjust is rail pressure, jacking it up to potentially unsafe levels, despite some of the makers' claims. You can't adjust timing or duration of injection if all you modify is the fuel pressure signal. The better modules also plug in line with the MAP sensor, which does boost fooling, by telling the ECM that boost is rising faster than it used to, thereby allowing more fuel to be injected.
When you can adjust timing and duration like Inmotion can, you don't need to turn up the fuel pressure.
Exactly. One other problem with the pressure-only modules - the CP3 has to be able to suck enough fuel to jack up rail pressure. With the stock filter and vacuum fuel system, you're asking for trouble.
The best add-on module or tune in the world isn't going to be worth a bucket of warm spit unless the supporting cast of characters is in place - adequate air flow and fuel delivery, and a stout drivetrain.
I've only seen one module that covers all of the mentioned parameters, made by TST Products, and only for the Dodge Cummins, designed by a former Cummins engineer.