Re: are these boost/vac levels normal ?
Vac reading is normal. I do know that around 70* your boost spike should be around 13 dropping to around 11 at redline. Boost will go up with hotter weather and go down with colder weather. Sounds like it is around 80* where you are or the Sunpro gauge may be off. Stage 1 boost spikes around 15 and drops to around 13 at redline. I've found the Aeroforce Interceptor scan gauge is right on the money with it's info. Rather than just getting a boost gauge by itself I would get the Aeroforce gauge and have boost/vac readings plus a bunch of other info.
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\'05 Stone White SRT4
\'04 Graphite PT Automatic
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