I'm going to put this in here since its already brought up and I know im gonna take flack for it but oh well. If you are that worried about warranty, leave it the hell alone. "oh I can just put it back to stock to get warranty" not only is that un-ethical and is the reason why dealerships always try to scam out of warranty work, it doesn't solve the problem in the first place. Dude in my evo group had a shitty tune loaded onto his evo. Blew the engine, put the car back to stock, got the engine replaced under warranty and then put the same parts and same tune on his car again...guess what happened again. Blew the second motor and dealership refused the warranty and he bitch and moaned about it...for what? why the fuck should they replace what you fucked up? Not to mention you have no idea what caused the issue. If you want the problem solved, you need to go in there as is. What if something got damaged, you go back to stock and bring it in? They wont have a fucking clue what caused it and will probably deny the warranty. If you can afford to buy a ZX10R and mod it, you can afford to replace the engine IF it blows. But hey, that's just my opinion.