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The amount of cars I've seen blow up on pump plus meth is staggering over 17 years. Personally, I think 900+ is too much with pump + meth. I stopped at 850 in my C6. Just not a lot of room for error. 700-800 is it for me.
OP, I'd leave the car at its power level if you're on a 4 bolt block. Maybe 1100, but definitely use Chuck's advise and go E. All those F1x cars that made 1200+ from our Houston shops.... Where are all of them now? All gone, blew up soon from multiple tuners. Leave it at a 1000-1100 on E and meth and call it a day. Badass car btw.
Can't blame the fuel for a bad setup/tuning.
FFS I've seen morons blow **** up even on race fuel.