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Reply With QuoteI cannot answer for SCT but I had a 8.1 in my 02 avalanche 2500 and used hp tuners. The gains on a tuned 8.1 are great. They seemed pretty corked up stock. A mail order tune would also be a good idea.
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This is a discussion on SCT on '04 suburban 8.1 3.73 4WD?? within the Port Injection (96+ / OBD-II) forums, part of the Performance category; Looking at possibly getting an SCT Xcalibrator2 for my suburban. Looking for a little more umph and at the same ...
Looking at possibly getting an SCT Xcalibrator2 for my suburban. Looking for a little more umph and at the same time, at least slightly better mpg. The truck is otherwise completely stock. I do a lot of boat towing and hauling a bunch of people decent distance sans boat.
Does anyone have any experience with the SCT in the 8.1 with the 4 speed tranny? Good/ bad/ indifferent?
I cannot answer for SCT but I had a 8.1 in my 02 avalanche 2500 and used hp tuners. The gains on a tuned 8.1 are great. They seemed pretty corked up stock. A mail order tune would also be a good idea.
2005 GMC Sierra CrewCab Z71 5.3
HP Tuners and K&N Filter.
Justin99- Thank you for your feedback. What kind of gains (perceived or real) did you see? Did you feel anything different with longevity or reliability
MPG increase/ decrease?
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