Just wondering how many prefer using a MAP sensor to reference fueling maps vs. the MAF? If you feel strongly that one is much better than the other, please post about it.

 

I personally used MAP based when I had my utec. It also pulled a lot smoother and my afr's were dead on.

How you liking the WR turbo? Mine is still very strong, still pulls pretty hard.

 

I like my WR but I can't help but wonder about the Evo 9 20G.

 

I personally am still using MAF based tuning, but when I get some free time, I am going to re-map everything to be MAP based. The load site calcs seem to be more dead on with the MAP based approach. I also like the fact that you can set the min value to start changes. Don't get me wrong, I do know you can do this with MAF, but it seems that MAF is a little more unstable. Just my .02


I also am very curious about the EVO 9 20G

 

I use MAF based, but switching soon.

My 20g-9 will be here in 2 weeks, i'll let you guys know

 

But don't you need Intake Air Sensor to work right with MAP reference? It is needed for weather compensation.

 

I think while using the MAP senor the utec is still getting the air intake temp from the MAF sensor for the time being. Last time my car was tuned they put a map senor on the car and I must say the car is much smoother now.

 

Sounds like something I should try...
What about fuel? If there is a base map for OLF, changing to MAP reference will change everything. Can someone explain more about it? Like what is a good starting MIN MAP and MAX MAP point to start with? Then with that particular setting, where about which load site will see 0 psi of boost?

It will much easier if I can see someone's map along with their log, so I know what to reference to.

Thanks!

 

It basically changes what the UTEC looks at to choose your load site. Your current map will not be far off but I wouldn't recommend switching and not tuning for it.

I noticed my load columns would work alot better for daily driving. It would not jump from Cell to Cell it would be more steady.

Ben

 

Nope.. Map doesn't use AIT reference, the boost pressure is the only reference point for the map based maps.. MAF is a much more accurate measure of air demand, but with the stock MAF sensor, the map reference made difficult to tune cars easier to tune (Big turbo and whatnot) but its not a speed density or IAT reference system at the moment.