i never punch 1st or 2nd much...even on highway in only 5th and 4th to pass i get about 245-255. at first i thought it was my driving, and my dad told me to stop driving like a dumbass, and i tried explaining it wasnt just my driving. we switched cars for a couple days, i drove his tsx and he drove my z. he got 250 driving around town with only about 50 highway miles. i got 330 on his tsx...so any ideas for troubleshooting, ie. wheel balance and aligned, which i did.