I understand that for turbo charged cars you can splice into the waste gate boost reference line for a reading for your...

I understand that for turbo charged cars you can splice into the waste gate boost reference line for a reading for your boost gauge, but how does it work for superchargers??

Correct me if i'm wrong, but would it just be a vacuum line from your manifold to your gauge? (behind the throttle body) It's surprisingly difficult to find decent installation guides on the net for supercharged applications.

I'm building a custom supercharger kit and want to be safe, don't want to push over 7psi on stock engine.

Buy a 7psi pulley

is that the one that revs to 6 grand or the one that revs to 8.5?

doesn't it matter on the ratio between your crank and the pulley size? surley every car doesnt have the same crank pulley diameter

It depends on your engine and supercharger of choice.

Do the math (and learn it) or ask someone who has already worked with the engine/super combo you plan on using

what psi you run is surprisingly less important than the tune

it is when you arn't running a tune. This downing atlanta kit for the 318i pushed 7-8psi no tune just FPR and did fine, plenty of people have used the kit. I'm running a smaller amr500 and am just making sure I don't go past what the DASC made. motronic 5.2 dme can handle it.

You aren't running a tune with an aftermarket supercharger? Are you still using stock injectors?

yeah stock injectors with RRFPR

is installing a supercharger tough? What's a reasonable price for a kit? total amateur here but I'm not retarded and their seems to be a wealth of resources.