Rep Power: 297

okay guys.. wheres all my techies at... for one what is the defiinition of MAP sensor and what it is used for???...k.. now second question is on the VAFC2 it has a wire that connects to the pressure wire... is that the same thing as MAP??? Cause if i look at the wiring diagram of the ECU harness it shows pin #19 of connector A which is the green/red wire is the MAP sensor but if you look at the installation diagram of the VAFC2 it says pressure wire???.... third question is how can u tell the fuel adjustment settings are working without going to the dyno???.... should i just try and turning up the fuel at a certain rpm and see if it sounds different or if smoke comes out or what???.. whats the use of the VTM wire on the VAFC2??? doesnt really explain it in the book it came..... Last thing i was wondering if someone could really help me that has the VAFC2 working properly if its not to much trouble so i could see if my theory proves correct.... could u disconnect ur "vtec in" wire from the ECU.. then make sure ur v/t cont is set to any engagment point u already have and make sure its not on passive mode which usually has the **** symbols.... next set ur v/t unmt to +/- 0% for everything in there... and then disconnect r VTM wire... then drive ur car and tell me if the car still feels the same when u didnt have the wires connected????

 
Rep Power: 812

Omg, well I can answer some of those. The MAP is sililar to the MAF that other cars have (mass airflow sensor) and tells the ecu how much air is getting in the engine. I think pressure is different and may have to do with vacuum? Don't know exactly. There isn't any real way to see what the settings are doing. You may be able to tell by driving it (I could), but that's not a good idea if you have no baseline to work off of. You need to get on a dyno and figure out if the car runs rich or lean and go from there. VTM wire is necessary to keep the cel off, otherwise the car will go into safe mode.

 
Rep Power: 297

haha.. well that answers part of it.. but havent u noticed that the pressure wire on our vafc's connect to the map sensor wire??

 
Rep Power: 312

MAP = Manifold Absolute Pressure. Our cars ECU measures load based on how much vacuum the engine is pulling. Other cars use a MAF (Mass Air Flow) sensor to determine how much air the engine is ingesting.

 
Rep Power: 297

that answers the first question in more detail.... wat about the rest

 
Rep Power: 812

Go find a dyno I'm not playing around with my vtec wires.