surging on small shot?

[99_Z28]

Running a HSW dry 75 shot with there interface no window switch or fpss. When I spray it the wideband will fluctuate from 11.1 to 12.0 and the motor will surge. Im running new tr6 plugs gapped at .036, bottle pressure is at 950 and mounted correctly. Bottle weighs 22lbs, any ideas?

[bills98ta]

Need more fuel. Where's the timing at ?

[bills98ta]

I found that my WB is reading off. If you get a chance to have a shop put their sniffer in, I would do it to confirm your reading... I just had mine on a dyno yesterday, & found that my AEM 11.1 was really a 12.4...
Normally, surging is a lean condition.

[99_Z28]

Need more fuel. Where's the timing at ?

Timing is -3 from stock.

I found that my WB is reading off. If you get a chance to have a shop put their sniffer in, I would do it to confirm your reading... I just had mine on a dyno yesterday, & found that my AEM 11.1 was really a 12.4...
Normally, surging is a lean condition.

Holy crap, im running the same wideband....but I tried my friends AEM 1st before I bought mine and it was reading the same as this one on the motor.

[99_Z28]

Fixed it! The WOT switch went out of adjustment and was clicking on and off... I waisted no time throwing in the 100 shot jet (), the wideband is reading a steady 12.0. Im temped to put in a 125 jet but im already pushing the limits of the glass A4 and rear.