I have installed an HHO system on a 92 Chev pickup 350. I also installed an EFIE card. But upon acceleration the engine still pings alot when HHO is on and regardless of EFIE setting. Have not checked MPG yet but works best set at 0.5 volts.

Do I still need a MAP sensor enhancer as well?

2 generators
water filter housings
13 plates each 304 ss 3X7
30 amps around 1.2 lpm (hoping for 2)
sodium hydroxide