MSefi.com read only forum (Jan.15,2018)

Hello,

I have an MSII V3 installed on a 87 300ZX turbo. I have a very rare problem - I have a standard wiring setup and when I go under boost (about 5 psi) I am blowing the 2A fuse for the MS, and the two 5A fuses for the injectors. It seems like this problem only happens under boost. If I drive around slowly I don't see the issue.

During install/intial setup I discovered that I had a short on one of my injector pigtails and blew C16. I replaced and fixed the short and everything seems fine except when I step on the gas.

Could anything else be going bad? If I put the MS on the stim and try to replicate the conditions (except for the map value) everything seems ok.

Any help is appreciated.

What is the resistance on your injectors?

I figured it out - I had the PWM set to 30% for low impedence injectors (mine read 2.4 ohms) - lowered it to about 15% following the procedure and it appears to be working well.