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GMTU Boost fluctuations

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Old 02-15-2014, 12:02 PM
  #11  
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They are available remanufactured from some part stores now....much less money to switch them than it was.
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Old 02-15-2014, 12:03 PM
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Gotta agree with Sam on that. Good performance plus they look good.

Attachment 15807
Last edited by firemangeorge; 05-30-2014 at 11:07 PM.
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Old 02-15-2014, 05:19 PM
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Originally Posted by eaglefreak138
Hmm. Is that all points of mph when you go Wot? You should see over 20 at times especially below 40mph or between 50-70mph

It may quickly flare higher, but I don't see it on the boost gauge.

I've checked over everything - Map sensor contact with the A/C compressor, all wires are soldered - may have to revisit that once it gets warmer and re-do them, checked for boost leakdown.

Going to switch out the yellow spring for the green spring next. If that doesn't work then I'm planning getting it tuned via HPTuners.
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Old 02-15-2014, 05:33 PM
  #14  
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Our group is planning on that this spring also. Sure there will be a learning curve but with 6 SS's in the group, shouldn't take too long to dial them in...

Maybe 7 hey Paul you wanta tune that thing yet ?
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Old 02-15-2014, 08:59 PM
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You forget Sam, I *am* tuned with Trifecta. And pretty happy with it too!
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Old 02-15-2014, 09:07 PM
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Sorry man getting old CRS.
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Old 02-16-2014, 10:33 AM
  #17  
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Let's just say if you gave Vince, or GM your money there is..

Of course I have both........

Still haven't bought the suite.
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Old 02-17-2014, 08:46 AM
  #18  
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Originally Posted by eaglefreak138
That's what I'm thinking. I haven't noticed it in "i" mode. Man, this tune has awoke since the faulty charge pipe was replaced. If this GMTU is fun I can't wait to try Trifecta when my warranty is up.
What do you mean by "I" mode??
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Old 02-17-2014, 08:51 AM
  #19  
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Popped the yellow spring in to see if that helps the mid range throttle occasional bouncing. Test drive gave me 25lbs with no flutter from a 60mph roll, 23lbs no flutter from a 40mph roll and reduced fluctuating while accelerating from a light with mid throttle. No flutter at any poiny and no CEL yet (knock on wood). Mine may be liking the yellow.
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Old 02-21-2014, 08:31 PM
  #20  
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Originally Posted by SS fan
Our group is planning on that this spring also. Sure there will be a learning curve but with 6 SS's in the group, shouldn't take too long to dial them in...

Maybe 7 hey Paul you wanta tune that thing yet ?
??
I am in the process of learning the hptunes.
Should be running a hptune early spring myself hopefully.
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