I am getting boost spikes when targeting 2.0 load, especially when shifting from 2nd to 3rd, and 3rd to 4th. Me and Justin have reduced the values in the APP Increase tables for 3rd and 4th gear to near 0.8 (lowest possible), and we are still getting boost spikes. I have attached the logs and the t...

manselainen wrote:So quite a few of us are probably overspeeding that poor little thing

sure are!

thanks, looks like itd be helpful in comparing tunes etc. i had been meaning to do something similar

Use a lower off the shelf tune or upgrade your fuel pump. Stock fuel pumps can't keep up having a downpipe.also many blown engines because of this. Cobb makes limp modes map for gen2 ms3,their pumps can't keep up with just an intake.all your problems will be solved.this is of course my opinion based...

almost always with a downpipe, catted or not you will need to upgrade your fuel pump internals!

i saw 260g/s in early spring here on the 91 octance tune. with cold temps you should be 280+ i think

my understanding yes 260g/s is 260g/s however when its summer its much harder to hit that. Between summer and winter one can have 30g/s difference in their max. Colder air is more dense...... i copied this from the tuning guide steve made..... First, a note about air mass and air volume. We need to ...

http://www.mazdaspeedforums.org/forum/f ... ple-60321/

read this if anyone has some confusion on how to do a maf cal. Sometimes its easier with a different person explaining it.

some people may find this other way of describing more helpful. http://www.mazdaspeedforums.org/forum/f ... ple-60321/

thanks to cp-e i get to run stock maf cal