how can i test my map sensor to find out the max voltage it puts out to run right? because i built a device that uses a potentimeter and u adjust it and it wont let the computer see over the voltage that i set it at for the map sensor but i need to know the max voltage the map puts out during normal vacuum and driving so i dont set the device too low and make drivability poor . basically like an electronic version of a missing link,. its an obd o LS ecu im using,

 

anyone

 

Um, don't do that. Chip your ECU instead mmmkay?

Anyway, to answer your question(even though your idea is stupid) turn your car on but don't start it. put a volt meter on the map sensor. It should read about 2.85V. That will be your approximate voltage at WOT.

What you are suggesting has a lot of flaws and overall is a pretty dumb idea with the various better options on the market for not a lot of money.

 

if its so dumb then why does it work??? ive done this on my eclipse with no problems and i got it right on my civic now and have no problems.. its a cheap way to trick the ecu.. without using stupid check valves or ML.

 

I think he is saying it is a bad idea because there are much better, inexpensive methods out there. We are assuming that since you are using, in effect, a missing link, then you are also going to be using an FMU to get more fuel in under boost.

For a little more than the cost of an FMU and your missing link device, you could have switched to a chipped ECU and let it see all the boost you want to throw at it. But, to each his own.

 

https://honda-tech.com/zerothread/1654702

Thats why your method is a relatively bad idea.

Chipping an ECU and calling up a local tuner http://www.J-K-Tuning.com would be less expensive and better for your engine. Instead you invested in this electronic device, a FMU, and a new fuel pump which probably cost you as much or more than a street tune.

Regardless, have fun and good luck.

 

well i only spent about 2$ making this device so no money was lost. and its working so far . i fixed the high FP issue by drilling a hole in the reg to let more pass through.. i dont really know i even need a ML or this because i have no vac to boost transition probs even without them both ..