:::RHMT::: Real Home Made Turbo

General Category => Engine Management => Topic started by: lilpooh21186 on April 01, 2009, 05:15:26 PM

Title: were can i find sensor voltages?
Post by: lilpooh21186 on April 01, 2009, 05:15:26 PM: i dont currently have a volt meter. in log works i need to set the min voltage and the value as well as the Max voltage and the value for my map,tps and iat so were can i find this info?
Title: Re: were can i find sensor voltages?
Post by: jagojon3 on April 01, 2009, 07:13:12 PM: Jeez man get an HF multimeter for $3 at least, better than nothing
Title: Re: were can i find sensor voltages?
Post by: marcj on April 01, 2009, 09:14:34 PM: TPS is:
0%= 0.43
100% = 4.49

i'll look for the rest
Title: Re: were can i find sensor voltages?
Post by: marcj on April 01, 2009, 09:18:19 PM: MAP:
minimum at 0 volts is -59 mbar
maximum at 5 volts is 1782 mbar

voltage at 1 atm is 2.91
Title: Re: were can i find sensor voltages?
Post by: lilpooh21186 on April 01, 2009, 09:45:52 PM: thanks marcj
Title: Re: were can i find sensor voltages?
Post by: HiProfile on April 02, 2009, 03:49:34 PM: You'll have to test the resistance of the IAT and build a little circuit around it. The ecu reads it as a variable resistor (thermistor), and the Innovate forum has methods to set it up. Am I to assume you have an SSI-4?
Title: Re: were can i find sensor voltages?
Post by: lilpooh21186 on April 03, 2009, 03:41:23 PM: Quote from: HiProfile on April 02, 2009, 03:49:34 PM
You'll have to test the resistance of the IAT and build a little circuit around it. The ecu reads it as a variable resistor (thermistor), and the Innovate forum has methods to set it up. Am I to assume you have an SSI-4?
nope dont have the ssi-4 i just bought the lm-2 i saw something about a tuner-t but it seems like more of a lm-1 based product
Title: Re: were can i find sensor voltages?
Post by: Joseph Davis on April 03, 2009, 10:12:39 PM: icelord.net has Helms manuals with IAT curves. I suspect the Innovate gear wants a linear temp sender, though.
Title: Re: were can i find sensor voltages?
Post by: lilpooh21186 on April 07, 2009, 02:04:56 AM: yep everything is linear its PITA
Title: Re: were can i find sensor voltages?
Post by: marcj on April 07, 2009, 11:51:47 AM: Quote from: lilpooh21186 on April 07, 2009, 02:04:56 AM
yep everything is linear its PITA

does IAT use y=mx+b slope formula?
Title: Re: were can i find sensor voltages?
Post by: lilpooh21186 on April 07, 2009, 09:57:48 PM: i belive so but im done messing with it im just gunna log the important data i need like afr rpm map and others ill use crome for the other logging.
Title: Re: were can i find sensor voltages?
Post by: Joseph Davis on April 08, 2009, 01:41:55 PM: Quote from: marcj on April 07, 2009, 11:51:47 AM
Quote from: lilpooh21186 on April 07, 2009, 02:04:56 AM
yep everything is linear its PITA

does IAT use y=mx+b slope formula?

No, it is not linear.