Ron Foster

398ci w/ t72 fast system coil on plug 72lb inj. when runing on dyno around 3000 rpm and no load egt goes to 1500 deg. motor sounds good afr 13.9 but plugs look like they are being washed also 15" of vacuum.if wideband is off and motor is fat should make egt's lower?

thanks

MIGHTYMOUSE

iTrader: (59)

maybe the injector timing or ignition ignition timing is off? can you verify at the crank?

Ron Foster

verifyed at 36 degree's. injectors are bank to bank

MelloYellow

Dynojet?
I've seen their widebands fail before.
Normally replaced once a year.

Ron Foster

no, we have an anovative unit on it now, in the morning I will try the aim unit out of the car.