Alright so here's what will all be in and running by this time next month...
Main Upgrades
3-angle valve job + general machining of the block
Crower Stage 2 Turbo Ground Camshafts
Eagle Rods
Hahn 20g turbo w/ Intercooler
Hahn 3” Downpipe + 2.25” Magnaflow High-Flow Cat + 2.5” Catback Exhaust
Megasquirt Fuel Management ECU
Southbend Stage 3 Clutch
Turbonetics Exhaust Manifold
Wiseco 8.8:1 Pistons .020 over



Supporting Upgrades
557cc Fuel Injectors
AEM Adjustable Fuel Pressure Regulator
ARP Head Studs
ARP Main Studs
ARP Rod Bolts
Autometer Sport-Comp series gauges (5 gauges in all)
Crower Valve Springs
Crower Valve Retainers
EGR Blockoff
Fidanza Adjustable Cam Gears
Greddy Electronic Boost Controller w/ remote High-Low boost switch
GReddy Type-RS Blow-Off Valve
Iraggi 200A Alternator
Melling High Volume Oil Pump
MSD Ignition Coil
MSD Spark Plug Wires
OEM Timing Belt
Prothane Engine Mount inserts
SS Valves
Tanabe Front Underbrace
Topline Lifters + Rockers
Unorthodox Racing underdrive pulley
Wideband 02 sensor
Walbro High-Volume Fuel Pump


My question is simple: how high, given a good tune, do you think this engine can be boosted for daily driving? I'm hoping it'll love 20psi (again, assuming there is a GOOD tune!) but I'm planning on restricting it to 16psi just to play it safe. Then again the thought of that extra 4psi is really tantalizing, lol....what would you guys feel safe running this 420a at?