View Poll Results: Does your transmission behave like mine?
yes
28
66.67%
no
14
33.33%
Voters: 42. You may not vote on this poll
Lets talk about transmission behavior when the car is cold
04-30-10, 08:00 AM
#46
I have an 03 GS430 and mine doesn't shift hard out of first at all. I paid close attention to it today. Started car up, was on my way in about 30 seconds. My car shifts outnof 1st, 2nd, and 3rd all around 2000 RPM. 4th to 5th shifts about 1800 RPM all under casual city type driving. Either way, my 1st to 2nd shift has never been hard at all. My car had 137K miles on it. Could be an early model GS thing as mine has DBW so pehaps the transmission ECU is also tuned differently.
05-12-10, 05:08 PM
#48
I have been following this thread for a while but was waiting for someone else to say this... Could this transmission behavior be attributed to the emissions system? As some may be familiar with, when you install high flow cats along withheaders on some of the modern muscle cars you need to be on the gas in the first two minutes of driving. This in turn heats up the high flow cats quicker in order to prevent the o2 sensors from giving a check engine light due to the cats not working well enough. The electronic portion of emission controls on modern cars must give a grace period (around 2 minutes) before kicking on a check engine light due to non functioning (cold) cats, but must also kick on the check engine light after the two minutes. Just my 2 cents 
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