03-30-2006, 02:25 PM
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#7 (permalink)
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Senior Member
Car: 2005 Chrysler 300C
Join Date: Oct 2005
Member Number: 3625
Location: New Jersey
Posts: 260
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Quote:
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Originally Posted by magnuman
Just got back from the dealer and had them update my early build (07/04) Mag RT with TSB 18-031-04A, Driveability Improvements, and TSB 21-009-04Transmission Control Module Initialize. This brought the software for the ECM and TCM up to the most current versions, as required by Superchips. The actual upgrade took them about 2 hours, but was done under warantee...so no cost to me. I only noticed a slight improvement over the way it was previously though. I then took it home and loaded the SC 91 tune, and went for a ride. It definitely works better, shifts better and I now have the early build elusive "5". The SC tuner now works flawlessly, and I just checked and saw there were two more new software upgrades. Anyone know what they are? Should I leave well enough alone, or go for it?
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Leave it alone. I updated mine and lost some throttle response. Bummer for me! I'm just waiting for another update to fix this problem. I have to bring mine in for the ECM & TCM updates.
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Light silver 300C fully loaded (except dvd) with an E&G Classic grill with center bar, lower inserts, SRT8 style rear lip, chrome pillars, 22" rims and painted antenna 
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