Originally posted by getlucky151:
I usually wait in the fall/winter when its like 20 degrees in the morning, until the RPM drops until it hits around 1g, or normal...750. Ive heard its not good to let your car "warm-up" for more than 10 minute though, becuz of the cat-converter. I dont know if this is true.... 
I was taught 5 minutes. Then again, I've never had to wait anywhere near that to be honest.
1998.5 T-Red on Midnight Blue SVT
Build Number 5320 of 6535
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