12-27-2008, 10:22 AM
Join Date: Dec 2008
Location: Oslo, Norway
Total Cats: 0
problem with my super'd MX-5. High AFR
Helo, first time in here so im not sure if im posting in the right category, if im not, MOD please move thread.
So this is my problem, iw as out driving the other day and i suddenly noticed a severe loss of power when in boost, like it was running lean. very lean.
i checked my sparkplugs, and they where as white as a piece of paper.
so i checked my JR Powercard and it looked fine as it was intercepting the signal of the ecu and supplied more fuel. i do not have an AF gauge in my car but im getting one if i have to to fix this problem. anyone have any ideas of what to check first? i was not the one who did the wiring of the power and timing card, but they have worked fine until a few days ago. i have not been utilizing boost since this happened as im afraid i will burn a hole in my pistons.
my setup is as follows :
JR m45 SC @ 0,7 bar
KN air filter
walbro 255 fuel pump
Please help me as this is my daily driver and i could really use some good good pointers.