I have 91 CRX VTEC (B16A) Turbo boost 15psi and having problem with code 3, i'm using missing link for the map sensor and Super AFC for fuel mangement.
so what could be the problem?

 

this may sound retarted but chek to see if u switched up the plugs on the map sensor and tps . I did that once , Also make sure you have the map sensor wired up right . Had that happen once also , I was gettin codes 4 map sensor as soon as i realized i had it wired up wrong i fixed it reset the ecu and no more codes . good luck >> e

 

check to see if you switched the input/output wires for the map sensor on your afc.. also the missing link might not be bleeding enough air out for the map sensor.. 15psi is a lot..

 

run 8psi get it to run smooth
then work your way up
15 is hella lot for just a s-afc to controll it

 

it was working perfectlly for about 7 months with boost 18psi too until i changed my ecu to an automatic transmission ecu. vtec starts at 4500rpm cuts at 7600rpm and speed limit of 180 km