brickwall in tune !!

[msmechanical]

hi guys FOR SOME REASON EVEN THOUGH I HAVE GM LICENCE IT WONT LET ME POST THERE SO SORRY BOUT PUTTING IT HERE,,

as most of u know im a dcx guy I have no idea about the gm stuff and less than zero about mafs
I say this as I think I have a max maf scenario but I have heard some of you making 700plus on stock mafs, so maybe im heading totally in the wrong direction
this tune was almost near perfect on a stock ls2 d1sc on 7 psi now I have only put in piston and rod combo with springs headers and a clutch with a 12psi target pulley setup , bov is tial 50mm and injectors are id850

im hitting a brick wall at around 5000rpm as shown in the logs, please can someone help me? its not missing power is climbing its around 450rwhp at 5000 then it just noses over like some sort of limiter .. it does not misfire it doesn't spit it just loses power then I quickly get off it. heres the stock and modified tune and 2 logs for the mod tune,

greatly appreciated,

manny

[Zach]

I responded to your post in the GM CMR section

[msmechanical]

Huh??? Bro it said I wasn't allowed in let me check ,mmmmm