I have a 1989 Honda Prelude 2.0SI with a B20A5.

-9:1 Wiseco Pistons
-Bisi Rods
-Stock head, intake mani, and head
-WeiRtech Tubular Turbo Mani
-Precision SC61
-Tial 44mm WG
-Tial 50mm BOV
-Precision 880cc Injectors
-Hondata 4bar map
-Ostrich 2.0 and Hulog


Basically my problem is that the map sensor stays at about .30volts. I tried putting a good oem one in and the same thing. It sticks on the lower vacuum portion approx 24 in/HG. I have ohm'd the wires out from ECU to map sensor and they are good. I have checked the hose and it is in good shape.

When I unplug the sensor it goes straight to 4.8volts and no code is thrown in ectune. I have had the car running for a few minutes here and there with some crazy fuel settings, but didnt have datalogging on. Now I can only get it to run for a few seconds. I am at a loss for what else to try. My vacuum/boost gauge was reading the changes in vacuum, but nothing in ectune, which I verified with a voltmeter.

Any help or ideas would be great. Thanks.

 

where did you pu the map at