Mr 19"

Hi! My saff is not running too well. It started to misfire quite badly. Then i left it for a week. Then it was slightly better, but it still is a bit lower on idle and it feels like it hesitates when i drive off boost and when i go up on boost it runs okay up to 1,5 bar and then it misfires again and run bad. I have changed MAP-sensor, engine temp sensor(blue) and i have measured all sensors and can,t find any faults. I haven,t changed the ignition module yet. Any ideas anyone?

Mr 19"

I also use a FSE progressive fuel regulator. Could this be the problem in any way?

tabetha

Fuel pressure reg is not helpfull or needed as the std one is rising rate as all are.
If you can try another coil on it, or just get a group a one.
You need to check the CO to see if it has altered.
tabetha

Mr 19"

Okay. When i checked the Lambda a while ago it was 1,4 at 3000 rpm, so that,s very lean. Could it be one of the injectors? I run with Siemens 620cc ones, but the where new this summer.