Sudden Power Loss 07 GT

kkdoughboy

New Member
Jul 20, 2007
212
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Pennsylvania
Hi Guys, I have an 07 GT 5spd. Mods include MMR CAI, MSD Coil on plugs, SCT Livewire w/ Brenspeed 93 octane tune, JBA Shortys, Magnaflow X-pipe and catback, 3.55's.
Question is - I loaded the 93 Octane Brenspeed tune and my car had a huge increase in power. This increase was even substantial over the Bama 93 Race tune and the VMP 93 Octane tune I've also run. Needless to say I was very happy. Then one morning I got into the car and the low end power and great throttle response were gone?! They up and vanished like a fart in the wind. I pulled off the side of the road and reflased the tune onto the computer thinking something must have happened. Nothing! Still running badly and it has been running this way ever since that day. Any ideas? Has this happened to anyone else? Thanks, Chris