Originally posted by Sneakin Deacon
good luck getting correct o2's with a narrowband and a pocket logger... in my honest opinion, a wideband o2 will tell you much more than any EGT guage...yea, that 1 guage will tell you what that 1 cyl temp is.. but what happens if one of the other 3 have a failing injector? your only monitoring the one cylinder and wont see much temp if any increase unless your monitoring the cyl w/ the bad injectors...a wideband o2 in my opinion is the number 1 possibly most constructive tool/monitoring device, that should be equipped in any modified car. and when you think about it...alot of people tap the EGT into the driverside runner, #1? that is the coolest running cylinder if all are running the same...the air has a greater distance to travel to get to that very last runner, and in turn its getting a richer mixture in that cylinder because its getting less air then the others...but this is just my theory id monitor the cyl closest to the TB as it has 1st dibs on any air coming through but still your left with the fact your only monitoring 1 cyl.
the reason everyone taps the number one runner is cuz its the hottest. and the reason that i have heard is because it gets the fuel last.