what should be my first aftermarket mod?

Originally Posted by Z1NONLY

I saw a couple people mention it, but I don't think it's been quantified....

Seat time > Bolt-ons. All day long.

If you were to come to the track and run our test & tune course with your stock 370 regularly, 4-8 runs every month with pointers from instructors for a year, you could cut off as much as 10 seconds off your time. (A driving school would give you as much seat time in a day or two.)

Now lets say you were to take the same car and make a few runs one month, then go buy shocks, springs, sways, a differential, A CAI kit,some HFC, exhaust, and heck throw in a tune too.

If you spend the whole year putting parts on the car (rather than getting seat time) and come back to test it out a year later, you might shave a second or two off your time.

Simply put, "Seat Time you" will absolutely destroy "Parts Store" you.