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Air/Fuel Mixture Tool

Started by VCODE, March 14, 2021, 12:42:11 PM

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VCODE

Anyone have or is using a Air/Fuel mixture tool? Used for 70-71 Mopar's that you stick a probe into the end of the exhaust pipe. Not looking for the one that 02 sensors need to be installed into the front exhaust pipe like new cars have.
Bob

GoodysGotaCuda

They make probes that stick an oxygen sensor in the tailpipe and is not permanent, they are used on dynos.

Seems like that would be what you want.
1972 Barracuda - 5.7L Hemi/T56 Magnum
2020 RAM 1500 - 5.7L

My Wheel and Tire Specs

VCODE

Quote from: GoodysGotaCuda on March 14, 2021, 03:45:38 PM
They make probes that stick an oxygen sensor in the tailpipe and is not permanent, they are used on dynos.

Seems like that would be what you want.

That's it, was not thinking dyno. I remember the old Sun machines had them.
Thanks Bob


dodj

"There is nothing your government can give you that it hasn't already taken from you in the first place" -Winston Churchill

Rich G.

Old style emission tester just test Hc and co. Had one back in my father's gas station days





VCODE

I just spoke with a Tech at Innovate. He is telling me that putting the o2 sensor in the tailpipe will not work. It is only good for dyno at wide open throttle. What do you guys think. Not used at idle or mid range.
Thanks Bob

RUNCHARGER

Probably need more volume so the fumes don't get mixed in with the atmosphere outside the tailpipes. They like the O2 sensor as close to the header as possible with no exhaust leaks on the regular install.
Sheldon

VCODE

Quote from: RUNCHARGER on March 15, 2021, 07:04:04 AM
Probably need more volume so the fumes don't get mixed in with the atmosphere outside the tailpipes. They like the O2 sensor as close to the header as possible with no exhaust leaks on the regular install.

Thanks, Exactly what he was saying.


RUNCHARGER

I remember the Chrysler dealership style setups though.
Sheldon

1 Wild R/T

Quote from: VCODE on March 15, 2021, 06:10:42 AM
I just spoke with a Tech at Innovate. He is telling me that putting the o2 sensor in the tailpipe will not work. It is only good for dyno at wide open throttle. What do you guys think. Not used at idle or mid range.
Thanks Bob

I saw something about that while looking for part numbers yesterday... A few guys said they had added length to the probe so the sampling was taken further up the exhaust pipe & that it works well...  It was suggested that standard brass compression fittings and a length of copper tubing worked fine..

HP_Cuda


I cringe when I see that holding that tailpipe mount in will go up against my chrome tips!

Hell no!

It's better to just use the standard O2 setup anyway.

B
1970 Cuda Yellow 440 4 speed (Sold)
1970 Cuda clone 440 4 speed FJ5
1975 Dodge Power Wagon W200

Scooter

I bought one of those Innovative setups years back with intent to put it in my Fairlane, it sat on the shelf for quite some time. Ended up putting it on the Challenger a few months back.. it's worth every cent to get real-time telemetry as you drive IMHO.



Even if you do not want it in the car permanently, get the bung for the O2 sensor installed and you can put the readout gauge on the floor until you get the the tune dialed in. Then just plug the exhaust bung when you are done and remove the cable. Toss it back in  when you want to re-tune.

My2c.