Hello
I recently got the new Gran Turismo game for psp. Anyway I was just looking it up on the internet and I Found this tuning guide for Gran Turismo 4.
don't turn your nose up at it because its for a computer game. Have a read of it, its a small download, and I think it has some great information especially if your looking to get into profesional racing or such.
Anyway heres the link to the guides:
http://www.gtplanet.net/forum/showthread.php?t=104034
What do you think?
Thanks
Travis