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'03 Z71 Tahoe - ByeBye 11mpg.. Hello 4BTA Cummins

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Old 08-25-2013, 12:54 PM
  #121  
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Havnt had time to get the others done yet... but here is a short video showing how boost comes on.

Still needs more fuel... lol

Here are some better shots of the atmosphere turbo...

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Might tinker with it more today.. have a new governor spring to install and some tuning on the pump to do... not sure if I'll mess with it or not today.

Anyways..
-Chris
Old 08-28-2013, 02:06 PM
  #122  
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Hows it runnin? I just got a new truck 97 with a built 350 heads cam stall transmisson 700r4 its fun! Much more fun than my stock 2500 that thing had no ***** lol
Old 08-28-2013, 11:20 PM
  #123  
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Where's the Video?
Old 08-29-2013, 07:32 AM
  #124  
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Sorry guys... spaced it a bit..

HX30W / HX35 Compounds - 4bt Cummins Tahoe - Light Take Off - YouTube

HX30W / HX35 Compounds - 4bt Cummins Tahoe - Short Drive - YouTube

HX30W / HX35 Compounds - From a stop - 4bt Tahoe - YouTube

Still have a lot of tuning to do and I found an exhaust leak I need to fix between the hx30 vband and intermediate pipe that goes to the hx35.

I did install a new gov. spring which now keeps it from defueling before shifts.. need to bump WOT shift points up a few hundred rpms to take full advantage of it though.

More to come over the long weekend
-Chris
Old 08-29-2013, 02:24 PM
  #125  
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Man that's awesome!! Hats off to you!!
Old 09-01-2013, 12:29 AM
  #126  
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Thanks man.

Did some tuning today on the pump... 40psi feels great! Gonna need head studs before pushing it further... if I even do. It currently pulls great.. sits you back in the seat pretty good and will push this near 7k# suv to over 80 pretty quickly for what it is.

So far... I'm very happy with the outcome.

-Chris
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