hi Ive recently bought a 04 xr6 turbo 5spd sedan with these mods, walbro fuel pump, bosch 42lb injectors, 3 an 1/2" exhaust, 4" dump pipe, 4" hi flow cat. it came with a flash tuner with custom maps which I dont no a lot about. can someone tell me how well my original valve springs will cope. I dont thrash it or do burnouts just every now an then give it a boot full full but not red line it. also with the flash tuner and the original boost solanoid can the boost be upped via just the flash tuner??? I'm kinda new to this so anyhelp would be good.