04 z71 slower after converter,trans, and tune.

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May 6, 2012 | 07:22 PM

#11

AndysC3

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From: Minot, ND

Tucsons elevation is about 2400'. I've seen a 2400' da in Tucson a few times, but its during the winter at around 4 am lol. Any other changes to the truck between the two runs?

May 6, 2012 | 07:40 PM

#12

Kemble

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From: KY

No other changes, besides a fresh set of the same NGK sparkplugs, and a cleaned MAF. Thats it.

May 6, 2012 | 08:07 PM

#13

AndysC3

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From: Minot, ND

Do you have anything to log your runs?

May 6, 2012 | 09:06 PM

#14

Kemble

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From: KY

No logging equipment, that would help a bunch

May 7, 2012 | 03:15 PM

#15

Kemble

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From: KY

I'm going to run it again, but this time using a 4wd stalled to the max launch. Maybe the old 5.3 is just getting tired.

Sep 22, 2012 | 08:44 AM

#16

whitedakota

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I'm dealing with the same exact issue!

Sep 22, 2012 | 09:56 AM

#17

darnie

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i got the same issue... but its cause i cant keep the tires from spinning ;0

Sep 29, 2012 | 08:28 AM

#18

whitedakota

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Anybody else have any info on this issue? My truck picked up .3 in the 60ft but still runs the same on the big end. Feels as if it quits pulling at 5300 rpm?!