DIYEFI.org Forum

Here is good info on hot film maf
http://www.olaf-jacobs.nl/downloads/SSP/SSP_358.pdf

We can see the temp sensor required for the maf itself is intergrated into it and has nothing to do with the ecu.

Check out this video regarding IAT http://www.youtube.com/watch?v=1pOGSCsU-T8 I saw the video. I will tell you that yes the IAT is used for figuring out density, but thats used in a Speed Density application, not for a MAF applification that directly can read the mass of air. Now a AFM that uses a ...

I can only think that you mean "what happens if you want to accelerate very slowly"? Which would mean that the difference in throttle position and RPM where minimal. In that case the A/F calculated from the map would be very close to stoichiometric assuming you had the map cell for that R...

Lookup MAF's, they need an IAT sensor, otherwise they would only give you an accurate air mass reading at one specific air temperature. Sometimes the MAF and IAT are an all-in-one unit so maybe you've seen that and not realized there is an IAT built in? I've seen several maf's most that IAT's gener...

Hmmm OK I see what your saying but I just don't like the idea of a map for each cylinder, from a tuning point of view your effectively tuning four single cylinder engines which is obviously a pain. What about one proper full fuel map, then a modifier map for each cylinder which would just be +-1% o...

Not every cylinder is exactly the same, maybe slightly different compression ratio or whatever so we need to adjust each cylinder individually. We can measure this by the exhaust header temperature. Is it OK to have static values like; Cylinder 1 : 0.1 Cylinder 2 : 0.03 Cylinder 3 : 0 Cylinder 4 : ...

This first pic has the sensor on a 20.5in line at the firewall coming off the same port as in the 1st map sensor pic, same gm\ac delco 1 bar map sensor as seen in the other pics Rest of the data has the pics of the map sensor placement above the results http://i.imgur.com/Wkd4MSx.png https://sconten...

Some of the best idle fuel stability I've had since going to a standalone

Some changes made Changed injector size to 315cc Changed injector dead time table Changed MAP sensor values to 1 bar AC delco unit http://www.amazon.com/Manifold-Absolute-Pressure-Sensor-16212460/dp/B01177LBZW/ref=sr_1_4?s=automotive&ie=UTF8&qid=1443360233&sr=1-4&keywords=16212460 ht...

So I've replaced the ID1000's with some chevy cruze injectors, idle is a lot more stable with less deviatation between cylinders.