Powre lynz?

[phord]

I want to do Powre lynz or roughening intake runners and ports with wire wheel to promote a swirl for better fuel atomization. Assuming those modification works how would it affect fuel injected cars?
Would it would it lean out the mixture because the O2 sensor will not receive enough oxygen in exhaust ? What do you guys think?

[Frank Lee]

AFAIK those mods are for "wet" intakes i.e. carb or throttle body EFI. I suspect they'll do zero for multi-port systems. Regardless, mixture/O2 will be unaffected.

[mwebb]

..."Would it would it lean out the mixture because the O2 sensor will not receive enough oxygen in exhaust ? What do you guys think?"...

despite the name "02 sensor"
the 02 sensor measures presence of combustibles , not 02 .
as already stated
the modification will have zero effect on fuel trim or mixture HOT.

cold , who knows -
if there is a change , it will be for the worse . bad idea .