fastcrxsi90

sorry...i was tihinking lm1 (instead of llm2)

since you dont like math, i wont bother posting my actual formulas...

to simplify everything... (vacuum is negative, boost is positive)
for a stock obd0/1/2 "honda" map sensor:
inHg ~ (9.96 * volt) - 28.42
or
psig ~ (4.89 * volt) - 13.96

as far as logworks, im not sure that if you can break it into inHg for vacuum and psi for boost or not. with a plugin you can, but a direct voltage input im not sure.

miss-piggy

Here

fuse

LOL LOL ---- thanks. That is exactly what I was looking for. I cant just stick with a unit sorry. Logworks is so strange I will not go into -psi or -inhgvac. And you can only pick one unit at a time. So you have to double open the file and run one psi and one inhg.

Tom-Guy

Quit with the logical red herrings. There is no data sheet for the stock sensor, and you have never measured output versus pressure on multiple units. I have.


I use 24 column fuel maps on anything 3 bar or bigger. You see, I tune a lot of cars and Blake hasn't. All that extra resolution paints a very clear picture of engine VE as there are usually pronounced dips and quirks in engine operation that 6-7 psi scalar spacings lose. That extra resolution saves time when tuning, too.

Would you like me to type that up into data sheet format for you? For the record go shove a datasheet up your ***, I've read more datasheets in the last six months than you will in your entire life. Are you going to tell me to brush up on Ohm's and Kirchoff's next? Don't make me fire up mspaint and deface a picture of you.


I don't know why it's so fun to be mean to you, but it is.

miss-piggy

Blah blah blah. You said that Motorolla sensors read to 0v, they don't. You are an internet loud mouth and are happy to post to the world any accomplishment you've had. If you benched a stock sensor, let alone more than one, you would have posted and bragged about it. Lastly, I never said I agreed with Blake's opinion. I simply corrected your memory of it.

Anything further about the Honda sensor is up to your own discretion. I personally think Joseph's numbers are off. How much? Not enough to matter really, but they are off. I based my information on the Honda Shop Manual and compared it to the other ECU ROM editors. I've had discussions with some of those authors where they came up with their numbers. Answered varied and many of those individuals got mucked up in pressure conversions causing minor errors. The code was solid. The pressure conversions, not so much. Take it for what it's worth.

Joseph, knock yourself out with MS Paint. I don't really care.

Tom-Guy

If you want to plot the slope of their line, they do. Who gives a good goddamn about how the output knees off at 0 volts and 5 volts? The slope of the line of their operating range passes through 0 volts :1


Check my Honda-Tech posts circa 02-03. It was one of my frequent anti-Hondata commentaries.


Continue to think without any accomplishments to back you up - it's fun to laugh at you.

Chris Harris

Logworks isnt gay, you just cant mix two scales like InHg and PSI and put them on the same access.

For a honda, get used to using MBAR maybe?


You're both laughable...

The EASIEST point to calculate is 0 vacuum (1000 mbar)...ie KOEO. Measure that with an Ohmeter and that is 0 psi (1000 mbar)

Second point, I use 10.5 psi (1750 mbar) = 5 volts and thats always been "close nuff" for me

miss-piggy

1000mbar isn't KOEO, 1 atm = 1013.25 millibars.....

fuse

I am high altitude will this make ---- worse for me?? Usually I have noticed my map reading are a bit low. Most times when I tune n/a I never use the far right coulombs for a wide open pull. Never gets to them. Don’t get me wrong I do tune them (guess).

Chris Harris

holy christ you are a tool...no one is building nuclear weapons here, we are tuning cars