Just like the title says. Who has a difference in the readings between the two sides. If there is a difference we need to know
which intake and other mods you have
FI or NA
any other abnormal fueling like pressure drops
what is the average range of difference measured in mv or if you have 2 widebands the actual AFR.

 

Mine has always varied slightly. I have a 4.8 NA w/ a K&N 77-Series a TR224 @ 112, LT's ORY w/ cat-back. They differ by 100mv at most (stock 02 sensors btw), but its enough to cause my trims to be .5-1.5 different between sides. (ie. one side will be 0, the other will be .8, etc)

Haven't really paid much mind to it, figured it was due to the whole weird exhaust pulse on one side or something. Just recently switched from shortys to LTs and its the same, so I guess thats how its supposed to be???

 

Radix (therefore, aftermarket intake FI). Bank 2 reads leaner than 1, about 1/2 point.

 

WOT run at 5psi boost and 100% meth @ 4 psi initiallization & gain 5; 75*F
My LM-1 dropped from 14.6 to 12.5 for 2.3 sec and then to between 11.0 to 11.3 for the rest of the run (10.2 sec).

B1S1...........B2S2
872.............872
867.............872
893.............893
893.............885
880.............885
872.............880
863.............872
859.............872
854.............872
854.............876

Wot run at 10 psi boost and 100% meth @ 4 psi initialization & gain 5; 75*F
My LM-1 dropped from 14.6 to 10.9 in 2 sec and then down to 10.0 over the rest of the run (11 sec).

B1S1...........B2S1
069.............889
906.............906
906.............898
898.............902
885.............898
885.............893
876.............893
880.............000 oops
880.............837

Some of the difference you see between B1 and B2 will be the lag in the logging between readings.

 

Ive always had a big difference between b1-b2 with b1 being around 70-100mv leaner. Ive tried everything I could think of to fix the problem as it seems to cause spuradic kr even at low timing. Then I came to the realization that it might be #7 leaning out causing the kr and the difference between the sides. Im hoping to see a pattern here if we can get more people to vote.

I have milled/valve job heads, lpe cam, full exhaust, 3k stall, shift kit, CAI

 

come on guys 68 views and only 8 votes, this info is beneficial to everyone.

 

WTF..when I voted it showed me the poll results but a different poll thread. LOL

lean on b1, radix/2.02-1.57 stage 2heads

 

Bank-to-bank variences tend to resulf from vacuum or intake manifold leaks......the ****-poor manifold design doesn't help either though...

 

5,8 and especially 7 run lean.

 

It did the same thing to me when I voted, sent me to an old thread on ls1tech.