really? erm...well at first when i did the first 2 sections, did like 10 laps no problem..but it was only when i went FLAT out to chase my friends fully done up dc5r...2nd gear in most corners and pass redline every gear...thats when i had it...but it only went up slowly..like i did last 3 laps like that and each lap it went up 1 bar on the dash...after third lap i just wanted to give my car a break in case....i guess it comes down to how hard the driver pushes it...