When is a full flash needed?
Hey guys for about 8 months I've been getting into tuning and trying to learn it the best I can on my on. My question is when is a full flash needed. I've helped several of my friends with there tunes and I never had to do a full flash. Just curious. Thanks
Sent from the back 40
13 Denali Duramax, tuned, 9" lift, 22s and 37s
13 Denali Yukon, CAI, tuned, 22s
06 TBSS, Tooley ported TFs, Tooley Stg4, lota dope
2 of the fastest 300ft YFZ's in the country
Depends what PCM/ECM/TCM we're talking about. Some, like the Cummins ECMs, need to be full flashed every time. Most GM vehicles only need to be full flashed IF you're upgrading to a COS/patching the OS. Most Duramax ECMs only need to be full flashed when going to DSPx, then cal flashes (LB7/LLY I believe needs to be full flashed to change some of the tunes).
~Erik~
2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.
I'm only talking about late model GM gas engines. I was thinking it had something upgrading the OS but wasn't completely sure.
Sent from the back 40
13 Denali Duramax, tuned, 9" lift, 22s and 37s
13 Denali Yukon, CAI, tuned, 22s
06 TBSS, Tooley ported TFs, Tooley Stg4, lota dope
2 of the fastest 300ft YFZ's in the country
Gen IV stuff, only if there is an OS patch or COS upgrade being applied.
~Erik~
2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.
Cool thanks man
Sent from the back 40
13 Denali Duramax, tuned, 9" lift, 22s and 37s
13 Denali Yukon, CAI, tuned, 22s
06 TBSS, Tooley ported TFs, Tooley Stg4, lota dope
2 of the fastest 300ft YFZ's in the country
Erik is correct on late GM ECM's, it is a misconception that a full flash is needed to correct tuning problems or remove gremlins from the tune.
I no longer monitor the forum, please either post your question or create a support ticket.
Gen III: if changing OS's, or if enabling LC via cax.
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