How do you go back from a COS 3 to the original operating system? Do not have the tune file for the original operating system. Can i flash a tune with the original operating system then do a enigine and transmision segment swaps?
How do you go back from a COS 3 to the original operating system? Do not have the tune file for the original operating system. Can i flash a tune with the original operating system then do a enigine and transmision segment swaps?
99 ECSB, LS6, 224/228 .609/.588 110LSA, 4L80E, PI 3800, 4.10, Truetrac, Caltracs
10.67 @ 96mph 1000' pass http://s265.photobucket.com/albums/i...JayvsJerod.flv
BAD BOYZ RACING
KK PERFORMANCE
You can full flash the base OS, then do a cal-only flash from the latest COS file...
e.g. 02020003 is based on 12212156.
LQ4, Pro-Flo, heads, Stock48 cam'd, twin TO4E 2001 C5 830rwhp/905rwtq
2001 GMC RCSB pt88/5.3/4l80e/14 bolt 11.34@123.2 best pass so far with a 1,82 60' @ 13lbs boost
You can full flash a base tune having the same transmission...
or you can full flash a base tune with a different transmission and then do the transmission segment swap...
you will still have to do a cal-only flash from the COS file to get the modified tables into the stock tune (and you then also have to edit B3605 back to stock).
I have loaded COS5 successfully but now I want to revert back to the original 12212156 OS. But when I load my last tune file (the one with 12212156) the option to flash PCM and OS is grayed out. I have the commercial scan & tune version.
Plug your FlashScan into your laptop prior to opening any tune file, then you will have the full flash option available. If you have a V2, Id suggest using V8 to flash.
~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.
Yes, absolutely no reason you cannot, as long as the base OS is correct.
~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.