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It is not the final boost pressure that is critical, it is when boost & fuel are combined in proper event cycle and the efficiency the turbo produces the boost, my big turbo worked ok with GM programming, even my GM-8 could make 20+ psi but fell off in ability to produce boost without struggle...

Alternator change ??? I had a reman I got from GM dealer once 3 weeks after installing it, chirped like birds swapped it out for a Duralast Gold and chirp went away for a couple of years, lifetime warranty on it so I replaced again been 3 years now chirp free

What brand is the new belt, I had a Autozone belt Duralast IIRC chirped day one installed it, swapped to a Goodyear and chirping stopped

Just uploaded some video http://www.thetruckstop.us/forum/showthread.php?2015-Replacement-turbo&p=427921&viewfull=1#post427921 Starts @ post 793 see above also for vids

I wonder what that turbo would do with a program tuned for it, one thing with all the back & forth with mine some tunes did better than others, my current tune is pretty close but still needs some tweaking IMO. Boost lag some would have you believe is all you will ever get from a big turbo is...

These are some older videos before my current reflash was installed, no tail pipe videos when I took these http://www.youtube.com/watch?v=WEs1k7gTwls http://www.youtube.com/watch?v=eRED6WUR8UA http://www.youtube.com/watch?v=KMKdm0IgzFM

These are some older videos before my current reflash was installed, no tail pipe videos when I took these http://www.youtube.com/watch?v=WEs1k7gTwls http://www.youtube.com/watch?v=eRED6WUR8UA http://www.youtube.com/watch?v=KMKdm0IgzFM

I started to post this in the HX-40 thread but thought this would be more appropriate Ted aka member 635 visited us here on the coast unfortunately the co-ordination between driver & photographer did not work as well as I had hoped, Ted was hooking the grab bar one hand and trying to video with...

I started to post this in the HX-40 thread but thought this would be more appropriate Ted aka member 635 visited us here on the coast unfortunately the co-ordination between driver & photographer did not work as well as I had hoped, Ted was hooking the grab bar one hand and trying to video with...

Cleaning up the fuel discussion in this thread good discussion but moved it to here where it will get visibility it should have as a fuels discussion http://www.thetruckstop.us/forum/showthread.php?37400-Redirected-discussion-from-the-MaxxTorque-article-in-6-5-Performance

Done.....it is less confusing to keep up with just one vehicle in a thread. When you get a moment please also update your signature line with truck info that also helps thread to thread to remember what vehicle we are offering up information on.

Drain off some coolant, to lower the level, and remove the bolts from the cover really not much more to it than that, fill up when complete start truck & open vent bleeder screw on top of the cover to vent the air from the system. I grabbed a picture from the TRL picture thread and added some...

Welcome to site Tim stick around and we can show you going to"qualified" mechanic not always necessary much of this is very much DIY. Nothing from driveline or suspension has to be removed ..

You looking at a programmer, or a reprogrammed PCM ?

Well your best result would be drop & flush, and clean the sock that is your next concern if you have "mud/muck" in the tank, if in a bind for time you might might I say get by with a pump/fill with fresh Diesel only fuel, could maybe find some high concentration bio-Diesel to clean up system...

Gasser or Diesel truck need more info to give best advise

Start with gnds check/clean colder weather plays havoc on loose or slightly dirty connections see gnd thread in the TRL http://www.thetruckstop.us/forum/showthread.php?17457-Grounds-what-are-they-amp-where-are-they And opacity is a possibility as well

more help here possibly as well http://www.thetruckstop.us/forum/showthread.php?37075-6-2-amp-6-5-Help-finder

Remove switch & jumper across it to see if it engages, pretty much a on/off scenario, exception you have to be in N for 4L to engage, jumper across the switch, and see if getting 12V to the actuator plug at the xfer case solenoid, check also for black to gnd at plug to frame in ohm scale on your...

I just added a Bose Solo TV audio set to my big screen & it came with a optical connection I had never seen/used before works well, also have the 3.5 plug for my puter to hook to the TV