First of all. Go check out this website. You have your calcualtions incorrect. Use the pressure calculator for your calculations.Originally posted by N8DOGG
I just got the turboXS high performance boost controller. Either I cant get it set right or something is very wrong. Whenever i go to test the turbo boost it will go up to an apex(lets say 1.2 bar but it changes depending on the setting) and then seems to bounce off and go way downwards (to like .7 or .8). Did i do something wrong on my install or am i pushing too much boost. I now have it so first gear doesnt go as high as 1.1, so its about 15psi, is that still too much. Im worried about running lean, which means big engine trouble. Please help! Thanks
Secondly, 1.2 bar is 17.4psi, and 1.1 bar is 16psi, not 15.
I think the reason why it is building and then bouncing off is you are hitting fuel cut with the 1.2 bar setting. Fuel cut for the WRX is somewhere around 17psi. You have to be very careful, and by using the link above you can figure out psi to bar conversions. Bookmark it. IT MAY SAVE YOUR ENGINE.
Also, set your boost at either 3rd or 4th gear. These gears have much more load by the way of their gearing and the boost should be set accordingly. I set mine at WOT in 3rd gear.
I would only go up to 15.5psi because MBC's are known for spiking, especially in higher gears, and sometimes over 1psi at times. And you don't want your MBC to spike over 17psi, or you will actuate the fuel cut.
FYI. 1.03 bar is 14.94psi and 1.04bar is 15.08 psi.