I have seen dyno #s showing that- my 2918 made 438whp w/ a Gearhead 93 octane tune. Every dyno is different- I wouldn’t be so concerned w/ the final # as the delta between stock & tuned along w/ real world performance data like 1/4 mile improvement.
Tbh…one of the reasons the TRX or the R don’t really intrigue me all that much is b/c I simply don’t see needing the extra 100whp either of those provides over a tuned 3.5HO Raptor, it’s PLENTY fast for the street or off-road or anything in between- way more power than anyone needs & the TQ figures seem to be damn near equal or BETTER than stock TRX or R, then there’s the MPGs- the tuned 3.5HO will give ya a solid 5mpg better
I like a V8 as much as anyone, but a tuned 3.5HO is like Goldilocks porridge- just right haha