okay when im driving around and im coming up to a red light or a stop sign i let of the gas while in gear the pfc reads 0.0% inj duty and my wideband goes out of range. it reads this - - -

is this normal.

 

yes, our cars cut fuel completely off throttle

 

is this bad though..wouldnt it be runnig really lean......but in neutral and off the gas it reads 5.0%...

thats y i get confused.

 

it cuts the fuel for a second so i wont backfire, its no problem.

 

but if im slowing down using engine braking its more then a second because it reads 0.0% until i give it gas or put it in neutral.

 

anyone

 

Its just not dumping anymore fuel in; should still be a minimal amount fuel in the engine after you take your foot off.

 

You gotta be kidding ...

The PFC cuts fuel with zero throttle input until the rpms drop below about 1500 rpm, this can be changed with the datalogit. You don't need fuel when engine braking, think about it.

 

And it's not going to explode your motor because their is zero, ziltch, nada, load on the motor. The wheels are actually turning the motor.

It will read 0.0% until you get below the RPM settings on the PFC that tells it to add fuel back, so in reality if you found a big enough hill it would read 0.0% forever but still be running.

 

Fear Of The Unknown, "FOTU".

It needs to be added to out list: DAPDAS, DAPADAQ, FOTU!

 

What do those acronyms stand for Chuck? I've never heard them before. hahah

 

The other two were delveloped by twokrx7 and me. Our insider private joke!

But you now know the new "FOTU" for newbs or people with unfounded fears.

 

Great esoteric stuff.