i havent really had a chance to look at the tach when the boost comes on. just keeping the car on the road is enough. lol. it starts a little later then the other one so im gonna say it starts from a stop around 2500-2700rpm and at 20psi 3200-3500. once it starts it gets there fast. its spinning tires and getting squirly when the boost comes on. i got a tach with a shift light just so i wouldnt have to look down. lol.
for the 500 i would say just run the 73's for now. get it all working and holding pressure and go from there. start with 5-8psi and get farmiliar with how to tune the carb then start stepping it up when you are comfortable if you want.
i put the biggest intercooler i thought i could fit in my car. went behind the grille with a measuring tape and started figuring out what i was willing to cut to make it happen. there isnt much room behind my grille. there is a noticable pressure drop across it. 3psi or so. but after doing test pulls and bringing the car back i feel it to check the temp most of the time. the turbo side is warm, 1/4 over twards the outlet side is cool to the touch. so i know its working. piping is all nice and cold too. if you plan on running any double digit numbers i would plan on some kind of intercooler, air to air or chemical. hot air kills engines.
