moparstud440
Well-Known Member
For those of you guys running 93 pump gas what AFR range at WOT are you shooting for?
Does your 93 have a blend of ethanol in it?Car is a drag car only. For years I used to mix Sunoco 110 with 93 pump gas as I had issues on really hot days with the fuel boiling in the carb and creating a stumble when I tried to run just 93. I have since switch my fuel system from a dead head to a by pass system to help keep the fuel cooler and have went back to straight 93. When I was mixing fuel I was doing 2 gal 110 to 3 gal 93 and my AFR reading was 12.7 at WOT. Now with straight 93 it is 13.3. The car does have a snorkel style hood scoop and I didn't used to run an air cleaner, but this year I installed a 9" filter and used a K&N Drag filter (Grey and can pretty much see thru it). I need to install some new plugs to get a good reading on them, but this past weekend the car which is usually pretty consistent was deadly consistent in the 5 runs I made.
I'm pretty sure it does, I just get it at a regular gas pump and I don't know of anywhere around here that sells ethanol free gas.Does your 93 have a blend of ethanol in it?
For those of you guys running 93 pump gas what AFR range at WOT are you shooting for?
I bought an innovative dual 02 sensor set up.
I’m having trouble getting the dang thing to read most of the time. So far, it’s read the AFR on both sides twice out of the 6 times it even reported anything.
When it’s working, it at least points me in a direction.
Ditto, right to the battery are both wires. I go through the steps and everything is ether fine and I start the vehicle and get nothing or I get nothing. Just “HTR” that does t go off most of the time.Grounds and power with any interference makes them go wonky.
I direct ground mine to battery
Ditto, right to the battery are both wires. I go through the steps and everything is ether fine and I start the vehicle and get nothing or I get nothing. Just “HTR” that does t go off most of the time.
Time to call innovative
At least two of us have found poor connections at the power plug (used with the dash cigar lighter socket).Check the connector at the sensor. Make sure all the wires/pins are engaged fully. They are have a history of not being all in, so to speak. Might have a bad sensor off the go.
Thats the truthI generally tune WOT for best power....... and the A/F ratio is what it is.
I can’t think of any Mopar engine I’ve ever tested that made the best power with the A/F ratio so lean it would hurt itself.
If you’re new to using an A/F ratio gauge....... it’s probably a good idea to familiarize yourself with Lambda, and what the gauge is actually telling you, with regards to different fuels.