2TR

I see a pipe welded to a jackstand with an o2 sensor portruding out the side which is inserted into the tailpipe of vehicle.

Anyone else seen or used o2 sensor in pipe sticking out rear exhaust location?


I always thought it normal procedure to remove (1) front o2 sensor

or

Install seperate dedicated o2 bung before catyltic converter for dyno testing


Photo:



NOTE: NOT A CALLOUT. MY QUESTION IS FOR EDUCATIONAL PURPOSES!

In my opinion LMR is the king when it comes to LSx tuning.

Photo taken from the video here:

https://ls1tech.com/forums/texas-mem...racecraft.html

onspeed

iTrader: (3)

pretty sure that's a normal procedure for dyno tuning.

It might read a little leaner on cars with catalytic converters.. but the tuner could just compensate for that difference.

I know Innovate sells a handheld WBO2 unit with a tail pipe clamp attachment.

2TR

The folks on Hp Tuners forum in genereal typically frown on a tailpipe clamp o2 sensor.

This looks like a custom made tailpipe setup with the same premise.

Again it obviously works (LMR ain't no second hand shop)!

I understand as a general rule you would have to compensate approximatley +.2 AFR if the vehicle has catalytic converters.

Just wondering what LMR's among others thoughts were...

OUTLAWZ RACING

iTrader: (9)

had my car tuned they same way but I had a widband in the down pipe also. the reading where very close widband was 11.5, tail pipe was 11.7.

Turbo_Stang

iTrader: (3)

Easier Target/Realistic AFR. EGT's.Not to mention different gases and location can damage sensors.Keep in mind calibration and EGT's

2TR

Those are DAMN good points!

Worm Boy

iTrader: (2)

Yes, on most street applications(500hp) we use the wideband in the tailpipe. For forced induction/nitrous cars making big power, we use one after the headers collector and another out the tailpipe just to be safe. As always, we road test vehicles to check A/F readings. Hope that helps.

winters97gt

The way it should be done. Not every shop around does that.