Hi there I have a 1990 Miata turbo with mspnp2 my car is running rich and I know with ignition on the kpa for map will be at however low or high you are but when I start my car it stays at 98 percent kpa and I can't tune my idle ve I can manipulate my afrs to run normal but the kpa at idle stays at 98 anybody got any suggestions so I can fix this?

 

you need to plug a vac line from the intake manifold to the megasquirt

 

Yea I know that, that's obvious but it's not changing just stays there unless somewhere between there is a cut or something between the connection to the megasquirt to the intake

 

You need to figure out what is going wrong with your vacuum line from the intake manifold to the MS.