Got a new magnaflow exhaust system

Full catback exhaust? Did u unplug any oxygen sensors?
I replaced my manifolds for headers, replaced ypipe, threw on a 3" catback, all new 02 sensors, and didn't do a thing to the battery.
No kaboom, no idle issues.

I've also swapped different headers around without touching the battery.... No issues, afr remained at 14.7:1 at idle immediately upon starting the truck.
 
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I replaced my manifolds for headers, replaced ypipe, threw on a 3" catback, all new 02 sensors, and didn't do a thing to the battery.
No kaboom, no idle issues.

I've also swapped different headers around without touching the battery.... No issues, afr reremained at 14.7:1 at idle immediately upon starting the truck.

Maybe you need to reset your computer....
 
Absolutely. You may have to put a new modulator valve in the flux capacitor too. The manual recommends changing it every time you recalibrate the speedometer.

It has dual modulator valves, one ngk and one denso. I can't afford this, I just caved into my caffiene needs and bought the apple of coffee makers today. Damnit Amazon.
 
It has dual modulator valves, one ngk and one denso. I can't afford this, I just caved into my caffiene needs and bought the apple of coffee makers today. Damnit Amazon.

Haha.
Priorities man. The modulator valves come first. Good thing Amazon delivers cause your truck is deadlined. Enjoy your coffee while you sit at home. You’ll never pass a California emissions test with plugged up modulator valves.
 
U just want me to be stuck resetting my clock and stereo ;)

I put new lugnuts on recently too... I better recalibrated the speedometer
I feel I'm going faster than everyone else at same speed is that from a bigger tires or do I need to recaliberate?
 
I feel I'm going faster than everyone else at same speed is that from a bigger tires or do I need to recaliberate?
I think at 60 mph you're going 64 with 285/70-17... that's real close if not right. I've never recalibrated, just kinda keep it in mind.
 
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