GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

Patrick G dyno tune!

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Old Jan 18, 2011 | 03:37 PM
  #91  
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Originally Posted by markislive78
Lloyd,

Here's on thing I would run by Pat_G...

With EFI Live Pat has access to the Virtual VE tables, did you guys modify from stock? I was chasing my tail a bit with the wideband before figuring out virtual VE. After my 1st attempt dialing in fuel I would have virtually no WOT AFR error in 2nd gear or 3rd gear, but 1st gear AFR was erratic until I figured out the Virtual VE equations for HP Tuners...Transient fueling/throttle response is like booyahh now...
ok, so you have peaked my interest.
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Old Jan 18, 2011 | 03:43 PM
  #92  
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Originally Posted by Area47
ok, so you have peaked my interest.
Good read on the program needed to generate the equations...

http://www.hptuners.com/forum/showthread.php?t=26884

General steps for most users... http://www.hptuners.com/forum/showpo...1&postcount=32

Last edited by markislive78; Jan 18, 2011 at 03:52 PM.
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Old Jan 18, 2011 | 09:39 PM
  #93  
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Loyd TX
You said you thought the engine went flat,can you shoot a vid of the gauges and make a run and post it up here or youtube?
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Old Jan 19, 2011 | 08:11 AM
  #94  
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Originally Posted by gonzo 6.0
Loyd TX
You said you thought the engine went flat,can you shoot a vid of the gauges and make a run and post it up here or youtube?
I don't have a decent or "modern" video camera - nor am I very "tech savvy".

But - I'll ask some "younger", more tech savvy folks I know to see if we can do something like that. Great idea, gonzo - and thanks!
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Old Jan 20, 2011 | 05:02 PM
  #95  
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3.5mph gain is good. Normally you pick up a tenth with every 10rwhp gain so your gain 0.14 gain is pretty good. I'm sure Patrick will chime in sometime on the track results


DWHIZ - Patrick is just and 1.5hr down the road easy drive.
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Old Jan 20, 2011 | 05:06 PM
  #96  
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Mark man you have found a pretty awsome update for HPtuners. well i know what ill be doing when i get time im sure i can make some more power outta my bus, but im happy. 12.73@104.54mph with a 3600 and 72* weather and 100 IATs. i need to get back and see if i can get another 105 out of it with a stock converter
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Old Jan 20, 2011 | 07:33 PM
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Originally Posted by iamkeniff
Mark man you have found a pretty awsome update for HPtuners. well i know what ill be doing when i get time im sure i can make some more power outta my bus, but im happy. 12.73@104.54mph with a 3600 and 72* weather and 100 IATs. i need to get back and see if i can get another 105 out of it with a stock converter
The 12.73 @ 104.54mph was your previous personal best?

Like before the 6 speed swap?

Was it with 4.10s and 4 speed?
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Old Jan 20, 2011 | 08:27 PM
  #98  
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6.2/4L60e/4:10s/Tru-Trac/PI3600/Billet servos/pausing transmission/ 1 3/4" LTs, 3" exhaust, 36" muffler, 90mm TB, 4" CAI, UD crank pulley, Truckshop tune.

i now have a 6.2/6L80e/LS3 stock converter, 4:10s/Tru-Trac. it pulls harder now than it did with the 3600. a 20 punch on DRs is just insane, i love it
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Old Jan 20, 2011 | 08:36 PM
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Well man I bet you run low 12s now, just fyi my cc dropped 5 tenths with the 6l80/4.11 combo!
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Old Jan 21, 2011 | 03:44 AM
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Originally Posted by iamkeniff
Mark man you have found a pretty awsome update for HPtuners. well i know what ill be doing when i get time im sure i can make some more power outta my bus, but im happy. 12.73@104.54mph with a 3600 and 72* weather and 100 IATs. i need to get back and see if i can get another 105 out of it with a stock converter
Yea, that HPT tweak I posted really helps when you start adding headers ...I can only imagine an aftermarket CAM.
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