I only run one sensor/gauge (AEM 30-0300, installed pre-cat on the driver’s side) on my ’08, more so out of convenience than anything.
Monitoring both banks is certainly useful, at least so you can see which one may run leaner than the other. Once you figure that out, you really only need to run one on the leaner side to make sure you are commanding enough fuel to cover the worst case condition. Could you gain more by optimizing bank-to-bank? Probably, but my guess is that the gains would be minimal at best. My choice of running only one on the driver’s side is only backed up by anecdotal evidence from some other Gen 4s that have suffered engine failures on that bank (https://driveviper.com/forums/threads/28604-2008-Gen-IV-Calvo-Motorsports-Build):
FrgMstr said:
Compression ring on the #9 piston broke off from about 12 o'clock to 2 o'clock.
Rocket said:
Unfortunately, I had the same EXACT problem at 48k miles on my similar build Gen 4. Same exact piston #9.
J TNT said:
I recall a well respected Team Viper Engineer mention #9 cylinder runs the hottest…
I should probably figure out which bank runs leaner for myself, but I don’t have the time/energy to do it. For me, the benefit of having the extra data was far out weighed by the added pain of routing another set of wires, mounting another gauge, and then getting it to show up in my logging software.
