definate fuel cut problem MBC maybe?

[Rob88]

ok i know im definatly hitting fuel cut my logger shows the injectors spiking, maxing out and then shutting off. plus my maf signal on my logger hits the roof at 1602hz. i have a walbro 255 3" gm maf and maft, im running and 11.2 WOT AFR. i tested for boost leaks found one on my throttle shaft seal which is common i guess. replaced with new throttlebody and tested again. i found there is a hole in my mbc that is suposed to stop wastegate lock up but when i pressurize the system it leaks from there. could this be my problem?

 

[fourreGsixty3]

Ball and spring MBC have a small (1/16"-1/32") hole drilled in them so it keeps the metal ball from fluttering around. It should be right at the nipple that the WG vacuum line goes to (if Im not mistaken). How about some logger snap shot's. What are you boosting to? Is there creep, or spiking?

 

[Rob88]

no boost creep, no real spinking it goes to the desired pressure quite smoothly and quickly i have talked this over with ALOT of different dsm guys but no one can seem to figure it out. somone said maybe a sensitive ecu but i dont think so. its a voodoo boost boost controler it is in the middle of the controller. how do i load a screeen shot from my palm on the computer?

 

[Rob88]

ok figured it out. was a bad ECU. i looked at the board and the capacitors leaked and it was starting to turn black and almost melt....got a new board and no more fuel cut =).