Have a 04 g35 sc running on a map which works good till 5k rpm then it pretty much just bog/stutter out. I've tried checking coils/leaks/slip/etc and im leaning towards the tune. (car was bought this way, so i have no idea where to get any old map)

-Was wondering if anyone has a close similar setup that may wanna spare their map....

Setup -
Stock v2 vortech/3.12 pulley
test pipe with 2"5 catback
rc440cc
walbro/regulator
md spacer
1step cold ngk
utec

-Just want to figure if its the tune before even making an appointment. Thanks