depending where ur car revs to. stock m6, what is it...about....6100 maybe a little lower. Let someone else chime in and whatever it was set it at 200-300rpm's lower than what u shift at. IF you are a good shifter than 100rpms.

 

my rev limiter is set at 6000

 

Just expiriment with it, start it at 5800 and see how it feels.

 

Looking at my stock lt1 dyno graph (years ago) with a 150 shot. I peaked tq @ 3500 and my max hp was actually around 5000. Although it held there til nearly 6k.

I would say turn on 3200-3300 ish and spray till @ 5800. See how it feels. If yours is still pulling raise your rev limiter and spray higher.

My current setup is with a progressive controller. For my street tire setup I start at 3500 with 10%, hit 75% @ 5k and from @ 5500-6700 am at 100%.

 

Holy crap and that is with no problems? Are RPMS more valvetrain related or bottom end related??