Where can I get a map sensor that will read more than 12psi and is a simple bolt on affair for a b18c5.

 

I think you need a stand alone to compensate for a GM 2/3 bar map sensor. Essentially you will need a 2 bar map sensor good up to 15psi.

 

I have a power fc

 

Get the GM 3 bar MAP sensor dude. They have a page about it on Hondata's site.

 

You can use a GM sensor with the Power FC but the maps will be way wrong so you will have to move them. For instance on the stock map when your car is turned off and there is no vacuum and no boost it should read near 2.85 volts but with a 3 bar sensor it is way different so the if you moniter with the map tracer on the FC you will notice that it is way off. I forget how far off but it is different but the GM sensors will work on the Power FC.