SLP porting on 09 M8, what weights to run?

[iluv2fly]

I decided not to go sledding today and it cost me more money than if I had. I pulled down the 09 m8 and I am taking the cylinders to SLP on monday to finish the performance package. I allready have the slp pipe and intake so I am going to have them port it, do head mod, and install the power commander III. For those that have ported there's what weights are you running in the primary. Right now I run 70's with just the pipe and see 8000rpm at 8500-9000ft. With the porting peak power is at 8200 so I might just leave it alone and see what I get.

 

[colorado logger]

I hope someone can answer, sorry I can't. But been thinking of about doing the same mods. Hope it pays off, I will be watching. Best of luck.

 

[iluv2fly]

I will let everyone know on saturday how it works out as I will be taking it out. I will also let you know how my 70's work with the 125/340 primary spring. I will be riding 6-9K