211Ratsbud

iTrader: (1)

No problem, the help was better than no help, and getting the sensor straightened out was the main objective.. I will switch back to the orignal if I get that back to GM iat instead of fuel temp.

Dynotech Tuning

iTrader: (12)

So Donner, is he correct about the MUT address and formula for the GM IAT wired to the MAF plug?

-Jamie

211Ratsbud

iTrader: (1)

actually, scratch that. 1.43 would be handy to have for the scroll bar in those maps!

donner

iTrader: (1)

MUT11 after you have setted correct GM sensor scaling. Then just use normal formula what ever you like (ie. x-40 for C). MUT3A seems to be analog input RAM address and it seems evoscan calculates temp based on that so this cannot be used if sensor is not stock.

Dynotech Tuning

iTrader: (12)

Isn't the formula for Fahrenheit at MUT11 x*1.8-40?

-Jamie

donner

iTrader: (1)

I believe it is, default formula at Evoscan. I use C so don't remember. But anyway, after setting good scaling you can log it with both formulas and it gives correct result.

donner

iTrader: (1)

Here is rom with scaling my friends been using for GM sensor.

211Ratsbud

iTrader: (1)

lol thats my rom from the other thread. Im confused now officially. I thought you said you used a mistaken mitsubishi scaling on the rom you posted in response to my uploaded rom to show you the IAT i was using.

donner

iTrader: (1)

Yeah used you rom as base In my opinion it's not the same, only volt scaling looks the same but temp values are not. And I'm using Celcius scaling.

On the right your original (it was the one from early sd2.0 rom IIRC and on the left some known GM). I will test this now with sensor to be 100% sure but don't have time for that until weekend

211Ratsbud

iTrader: (1)

Thats a drastic change. Does the actual temp matter as much as the delta?