i have a 2007 g35c 6mt with nismo cai, MD 5/16th, MD MREV2, MD isothermal kit, test pipes, and APS 2.5 true dual exhaust and have a jwt clutcha and flywheel coming next week and now that im about out off bolt ons i was thinking about having my car reflash (i think you can do that at a performance shop so i odnt have to ship it out) but i was wondering should i dyno it first to see A/F ratios and stuff like that or just have it flashed thanks

 

If you have the bucks find an UpRev Tuner w/dyno and do it all at once. The eTunes are OK but can't be really optimized on anything other than a dyno.