kc12305 wrote:What happens to the mass air flow sensor
Newer civics (06+ I believe) come with a mass airflow sensor, ours have a manifold absolute pressure sensor, aka MAP sensor. I think 92's have the MAP mounted on the firewall with a vacuum line going to the throttle body and 93-95 have them mounted directly on top of the throttle body. My car is 92, so I had the MAP on the firewall. My D16z6 came out of a 93 or 94, so the MAP sensor was mounted on top of the throttle body. The stock MAP sensor can only read up to about 11 psi. That means if your psi goes any higher than 11 with a stock MAP, you get a check engine light.
When you have decided your HP goal, turbo size etc. pick a MAP sensor that will fit your needs. 1 bar = 14.5037738 psi. I went with a motorolla 2.5 bar which is plenty for my needs (figuring I might want to crank up the boost down the road). Since it was so small, I mounted it inside the cabin and de-pinned the wires from the stock map sensor on the throttle body and ran the wires inside of the cabin. Then I ran a small vacuum line (use a T splitter coming off of one of the small vac lines from the back of the intake manifold) for the sensor to read the pressure level in the manifold.
Now the ecu will be able to tell the amount of air the turbo is forcing into the manifold and supply the proper amount of fuel through the injectors.
Do Not PM me your technical questions. Post them in the forum!
My 1992 SOHC Turbo Hatch
My Youtube Channel: 6th Gear Garage
My 1992 SOHC Turbo Hatch
My Youtube Channel: 6th Gear Garage