Bone Stock 2003 zo6 - 96% duty cycle

[dankmac]

I have a 100% stock zo6 corvette with the 405 horse ls6.

I data logged it and I saw a peak duty cycle of 96% out of the injectors.

I replaced the o2 sensors and on a different day the injectors still peak at 93%.

Any input would be greatly appreciated! This doesn't seem right to me.

[wesam]

You should use WB to log your AFR if its not too rich
it could be a weak fuel pump or a cloged fuel filter

[SargeZ06]

^^^ Yes maybe tired fuel pump.

[LSxpwrdZ]

If it's on a stock tune it's understandable. They come pig rich from the factory.