I'm also a geek, but as an engineer, this makes me facepalm. Assuming you weren't trying to crack your .zip, you're just generating a lot of heat and spending a fair amount of money dealing with that heat for nothing.
I don't know what makes you think GSX-R's are any faster than other supersports/superbikes, though. In the club racing scene, they're generally considered easier to work on, but handling is inferior to other brands. Rider skill is a much bigger factor for performance, though, as demonstrated in my videos.
4GB is probably sufficient. However, like FRZN-95 says, it's probably DDR2. If you want to upgrade your CPU, you're probably going to have to replace both your motherboard and RAM too.
A motherboard swap can be fairly daunting for a complete newbie. Look up some guides on how to do it if that's the path you want to take.
If your computer is a pre-built (e.g. Dell, et al.), this may be impossible.
There was a 250 race I watched with Simoncelli and Bautista. It must have been Jerez in 2008. Simoncelli was leading and Bautista was right on his rear wheel mid-corner when Simoncelli's engine seized, causing him to crash and take out Bautista. They both got up, Simoncelli briefly explained what happened, and then they hugged right there in the gravel trap. It was awesome to see and speaks volumes for the character of both, IMO.
You would be incorrect. It is modeled, and it is tyre pressure change that made it most apparent to me. It can be quite significant on a car like the FOX, FBM, or MRT. That's why you generally see fast setups using the maximum tyre pressure all around, even if it results in sub-optimal temperatures. They gain more in a straight line due to reduced rolling resistance than they lose in corners due to reduced grip.
Even my old FO8@SO4 WR was rather slow on the straights due to low tyre pressure. My time was beaten just a week or 2 later by someone who went faster on the straights with more downforce and higher tyre pressures.
1. Click S2 Hotlaps.
2. Click the WR's tab.
3. Click the track environment you want (picture icons at the top).
4. Click the time on the combo you want (track configurations are shown in the column headers, cars are shown in the row headers).
5. Save the .spr to your ...\LFS\data\spr\ directory.
6. Run LFS.exe
7. Click Replays.
8. Click SPR at the bottom.
9. Find the SPR you just downloaded and double-click on it.