I just installed a Blox 68mm Throttle bodie on my 2000 Civic Si. Now after the install i've been getting power suges and Check engine and SRS. I pulled the code and P1129 came out. "Manifold Absolute Pressure (MAP) Sensor Circuit Higher Than Expected Comprehensive."
What does this mean? And how would i go about fixing this? Only mods i have dont to the car are Intake and cat back exaust. plz help =/

 

well clearly its the map sensor... Did you try resetting the ECU? Sounds like the ECU isnt use to reading the extra air coming into the intake...

 

no i havent dont that. Im going to try to do that right now

 

i reset the ECU but im still having the same problem

 

Do you have MAP and TPS hooked up backwards? try switching them!

 

that or the oring is gone or damaged. did you transfor the oring w/map sensor to the new TB?

 

Nope my dumb butt didnt. i looked at it again and saw that that dang o-ring wasnt there =(

 

no problem that was easy... glad i could help hows the car driving?

 

if the ECU detectes low vaccuum aroudn 15 or so it could set off the map code even though the map is good.

glad OP got it fix't