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FWI cause rich/lean???

SDGTP99

SDGTP99

New member
I just put on a JMB FWI yesterday. It looks great, makes the s/c whine a bit louder. problem is not long after I put it on the engine light came on and I got code P0171 & P0172. Rich & lean codes.
 


I find it odd to get vacuum leak codes out of the blue when I haven't messed with any lines recently. Just sayin.
 


Well I mean I understand where your coming from...just by swapping intakes I don't see how there WOULD be any issue...clear them and see if they come back?
 
And there was a leak somewhere. Sprayed carb cleaner and found leaks at injector's 3 & 5 & of course the pcv notch. Turns out the O-rings on those injectors were chewed up bad. That explains the missfires.
 
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