I had a JET maf sensor in my old G6 GXP. At wot I got a cel with 2 lean codes. Chris was my tuner at the time and told me to put the stock one back on and I did and never had problems. Now you might beable to get a tune specific for a maf, dont know. My dad put it on his stock 08 GP and didnt have any issues. Its been on there all winter. But he doesnt do wot runs.
8000K hid lows, GM 2-way remote, BT from 09.5, VIM, Rotofab rad cover, GXP fascia & diffuser, Inalfa sunroof
Rotofab CAI, VMS ecm/tcm 93 octane dyno tune, Mobil1, Solo Mach Shorty, Solo hfc's, Kooks 1 7/8 LT's
BMR subframe connectors, trans brace, diff bushings, subframe bushings, trailering arms
Summer rims/tires- 19X8.5 FR (245/40 Hankook), 19X9.5 rr (275/35 Hankook)
Winter tires/rims- 18X8.5 all the way around (245/40 Michelin)