| when tapping for the boost gauge take the intercooler pipe off and tap it but on the pyro just drill it while the engine is running and the boost pressure will blow the shavings out.
i have done 20-30 pyros like that and never had any problems.
__________________ James 
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. | 
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