$150FC

The car is coming together (yipeee) and Dyno Day is March 7. I remember from our last Dyno Day at Walker Dynotune back in September that the wideband o2 was placed in the tailpipe/muffler section of the exhaust.

However, there were no FCs at that dyno, and i think I may be the only one this time. I have the full Racing Beat 80mm Turbo exhaust. If the wideband only goes in one pipe (ie, driver's side, passenger side), does the AFR stay the same? Would it be neccessary to push the wideband all the way to, say, the Y-pipe? Or should I just let the dyno operator and Steve Kan take care of this?

Thanks

Victor

mwatson184

I see no reason why there would be a difference in readings between the two tailpipes. Unless it was a true dual exhaust setup, but it isn't.

-Marques

duboisr

The rotors do not burn the same on one program .I think the front is leaner as the car goes down the road . but do not take my memory for fact . I read something on this on the PFC datalogging forum .They had a way to control the front and rear injectors with an offset to correct the effect .

Evil Aviator

The AFR will be the same in each exhaust outlet because both of them are fed from the same source via the Y-pipe.

Yes.

$150FC

cool. thanks.

setzep

the only way it would read different is if you had a leak after the Y pipe on one side.

pinkfloyd

why all the way back there in the first place ......heat?

setzep

Heat and it's a lot easier to put a tail pipe probe in then have to get under the car to screw in a sensor. Remember this is on a dyno, they have to put that sensor in many cars a day at times.

$150FC

yes. thanks for all the input, guys. i was overthinking the whole thing.

no lift at the dyno, heh, so it is easier to shove it up the tailpipe.

SPOautos

There is actually a lift there so if you want to install a bung and run it in there you can. But really since your full exhaust with no cats you should be fine with just a tail pipe sensor.

STEPHEN