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Low boosted LQ4 numbers

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Old Sep 28, 2009 | 06:45 PM
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Default Low boosted LQ4 numbers

i dont have the sheet but the a/f was alright stayed around 10-11 when boosted.
DynoDynamics
Max Power: 364fwhp 294 rwhp
Max Torque: 380fwtq
temperature: 104F Humidity: 75%
Stock LQ4+cam+sts at 6 psi
i certainly don't like the numbers, i dont know if the truck needs a retune or has somethiing wrong with it. it was dynoed with a quiet summit muffler. the cuout wasnt working but i think with the cuout open it would give~20hp.

Last edited by sowaidi; Sep 28, 2009 at 06:58 PM.
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Old Sep 28, 2009 | 06:48 PM
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that does seem very low, specially for the boost #'s
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Old Sep 28, 2009 | 07:08 PM
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Seems really low. But not sure how dynosynamics read.
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Old Sep 28, 2009 | 07:27 PM
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DynoDynamics won't show you the inflated numbers that the DynoJets will. On a DynoJet you would have about 450ft-lbs of TQ, basically just add 20% to your numbers to compare.
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Old Sep 28, 2009 | 07:37 PM
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Originally Posted by JennaBear
DynoDynamics won't show you the inflated numbers that the DynoJets will. On a DynoJet you would have about 450ft-lbs of TQ, basically just add 20% to your numbers to compare.
but dont you think its very low for a turbo
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Old Sep 28, 2009 | 07:39 PM
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It might be a little on the low side, but still not bad numbers.
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Old Sep 28, 2009 | 08:49 PM
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my stock LQ4/80E made 377rwhp and 435rwtq on 6psi on a dyno dynamics with a 60mm turbo and a 22" magnaflow after the turbo.
16* timing 11.2afr
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Old Sep 28, 2009 | 10:05 PM
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what would you think is the problem, tuning maybe? mine also has the 60-1 turbo. LQ4/T56 which i think should give more hp than autos
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Old Sep 28, 2009 | 10:09 PM
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could all be in the tuning... and i see its 104* ambient... what were your IATs and how much timing is being pulled with the IATs rise?
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Old Sep 29, 2009 | 05:21 PM
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Originally Posted by nonnieselman
could all be in the tuning... and i see its 104* ambient... what were your IATs and how much timing is being pulled with the IATs rise?
i didnt get to check the timing and the dyno guy wasnt my tuner
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