NismoMan2

Is there any way to get around the map sensor on an OBD0 crx, with an ex intake manifold, ive tried the check valves, it didnt work, is there anything else that would work?

typert

you can use an electronic voltage clamp - I will find you the link on how to make one - very simple

HMT-Admin

Any way around it? as in what... are you trying to boost and still getting a CEL? or you cant figure out how to hook the map up to the EX? manifold.. If the check valves are installed the right way you should have no problems. Sometiems it takes up to 4 valves depending on how much boost your running.

Voltage clamps work great, just need to get them to lock down at 3.0v

NismoMan2

When i boost, the cel comes on and my car stalls out, so if someone could show me how to make these voltage clamps that would be awesome

HMT-Admin

How are the check valves installed, if they are in wrong, it wont work right.



should take 3-4

what code are you getting?

NismoMan2

thats how there hooked up, i was throwing code 3 and 5, and my car would shut off, the only reason i could think of is that its a PM5 map sensor, my dx one, and i did the multipoint, do you think that has anything to do with it?

HMT-Admin

your using a SI ecu, and a SI/HF distributor right?

NismoMan2

Yea a si ecu, and the hf dizzy, do you think the PM5 map sensor makes a difference?

turboteener

where do you get a voltage clamp? If it is set to lock at three volts how does the engine run when it shows less than that? Or does it just keep voltage from going over that?

Nick7

It just keeps voltage going over 3V (at least part that ECU sees).

Check this site out:
http://www.teamfc3s.org/info/articles/fcd/diy_fcd.htm