Hi there, I drive an r32 with a rb20det. My car still has the standard coil's and i havnt had any trouble with them (touch wood) and my car boost's up to 1.5 bar sometimes (spiking). I run a HKS 2530 turbo, gtr 440cc inj, bosch 090 and a re-mapped ecu by Hyperdrive. Power is around the 300 hp atw. I drift this car in the wa drift series and it goes hard. I also need an oil cooler and catch can ha ha. Oh thought I might add that I know of a guy's rb20det with a 2530 that boosted momentarily at 2bar without popping ( something wasn't connected). Goes to show they can handle some high boost.