Sounds like your fuel is way off if it is bogging at 12 crap I run 14 all day on the stock injectors. I would check your fuel system like you fuel pressure regulator, fuel pump pressure, injector timeing, and ignition timing. Actually your timing belt could have jumped and then you could be running a tooth off that would make it act really funny just line up your timing marks and check them out. Just throwing some stuff out.
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1987 supra NA 5 speed
1JZGTE swap
Tokico Illumina 2 and Eibach springs
Tokico pillow blocks
Suspension Techniques front and rear sway bar
HKS super dragger cat-back exhaust plus test pipe
Greddy Profec B spec 2 boost controller
HKS type 1 turbo timer
Supra sport solid steel drive shaft
Walboro 255 fuel pump
JZA70 Front end mod
18" Volk Racing AV3 18x8.5 front 18x9.5 rear
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