Behind The Cats. I Just Got A Lm1 And Still Got Cats I Just
Want To Check How The A/f Is, But I Think Its
Some What Close At Wot. any body do it that way. the guy that dynod
my car did it from the back pipe, and it read 12.5 straight across.
ive change some things with hptuners and would like to see the results..

 

It needs to go before the cats to be accurate IMO.

 

yes, i was just going try i t out in one of the back 02 location till i get the bung
welded in place this is just for a day or 2 to get use to the software

 

Behind the cat, your WB will read slightly leaner than pre-cat. In other words, a pre-cat AFR of 12.3:1 would read 12.5-12.8:1 post-cat. Under the same conditions every time (warm up time and same bung), your WB will be fairly precise and give pretty reliable readings. Tune for the limit post-cat and you'll actually be just slightly on the safe side.

 

Just use the front O2 placement and run the car in open loop.

 

open loop throws both banks open loop right or do you have to disable both
banks.

 

Just set the closed loop enable temp to say 256*F and you will be all set.

 

Thanks Guy,,, Good Way To Set Ve Tables Correct. What I Dont Understand
Is I Never Get Out Of 62 Gp/cyl Area In The Timing Versus Cyl A-mass