Has anyone here managed to get the stock gauges to work along with installing the Gen 6?

Or does anyone know how to piggyback the ECU so i can retain the stock gauges?

 

Which gauges? Oil press, volts, colant temp and fuel level are not interfaced to the PCM. Your Gen 6 should have a tach output. That leaves you with the speed as the problem. You would need to interface the VSS directly to the speedo, perhaps using something from Dakota Digital:

http://www.dakotadigital.com/index.c...cat/cat287.htm

I run a MoTeC, and my solution to the speedo was to simply keep the stock PCM in place. I also paralleled or duplicated several sensor outputs to allow the stock PCM to control the idle speed (the MoTeC I have will not interface to the stepper type IAC motor) and emissions functions like AIR, EGR and EEC purge.