What happens if i run the car with out a MAP sensor ?
Will it drive ?

I have heard that , it can run with out it but it will take a while for the computer to map the correct points . Is this true ?

 

It might run but it would be rough. Why would you want to run it without MAP sensor?

 

I really doubt it's gonna run for too long. Without the map sensor you're ECU won't know the amount of fuel to dump or anything. It's going to be running hella lean if you do it and probably sound like a lawnmower. Have fun if you do it...

 

It will actually run rich, because it thinks it's always at WOT. When the car is cold it will barely run, but once it's warmed up it'll limp home okay. I dealt with a car with a messed up map sensor and one with a bad mass air flow sensor today and we're lucky honda didn't cheap out on this one - a bad MAF (which is more likely than a bad MAP as well) will keep the car from running at all.

You could also get it to run fairly well with just the TPS using throttle vs. rpm fuel and ignition maps. I'm not sure if honda ecu's will do that if the map sensor fails or not.


[Modified by Brian_92GSR, 3:22 AM 7/23/2002]

 

It is not that i wanna run without the MAP sensor ....... it is that i am about to adapt Toyota Indivisual Throttle bodies to run on a GSR motor and the main trouble would be the MAP sensor and maybe the TPS .

I can get the Toyota Throttle position sensor or adapt the honda TPS to work ..... Because with TWM and Blitz ITBs the stock TPS has to be used ( i think) ..
May be also the MAP sensor .....

after all there are just connectors sending current to the ECU to interpet .... So i figure that the "shape" of the connectors ( which join the sensor to the harness ) don't matter once the wires are all connected to the right spots and sending the correct signal to the ECU .....

am i somewhat correct in making this statement ?
ALL INFO THAT CAN HELP IS APPRECIATED

 

The TPS has no way of telling the ECU how much load is on the engine, that is why you have both. If you want the TPS to emulate the MAP, you would still need some type of vacuum signal for load to tell the ECU how much spark advance there should be. You are in the realm of standalone ECU with this setup.

 

the setup will be running with a Hondata 4 .....

How exactly is the MAP connected and mounted?
How exactly is the TPS connected and mounted?

i think the Toyota TPS and MAP sensor work on the same voltage as the Honda units . do you think i can use the toyota units and toyota connections and just integrate the Honda wires into these connectors ?

 

anyone ?