Originally Posted by
thedoc329
i am running a 1257 with an rs 17.5 boosted on spectrum and i HAD to do a cap, it would actually "brown out" on the bench. save yourself the headache and put one on, a buddy of mine is running a novak gtb esc with everything else the same as me and he also needed one
Odd. I am running the 1258 in my Hyper TT, RS 8.5 with no problems. All in all though, you're right, simply as a matter of prevention.
Editing as I see you're running Spek. I am running a 4PK/604.