3.0 litre EGR/Butterfly/Swirl Mod

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Metfast

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Hi all i have read the sticky's on this but my question is,
if i just do the blank of and not the butterfly will it make any difference (is it worth doing half one week) IE: the blank of and the butterfly a few weeks later, or vice versa if you see what i mean.

Regards Ge learning but slowly.
 
Either mod is a 15 minute job. go for it and you tell us! I did both at the same time so can't really share much insight except there was a subtle improvement in low end/off boost response.
 
the point of doing the butterfly mod is that the butterfly reduces boost/airflow and if the egr is blocked off and the butterfly still working, you end up with less effective compression which can cause problems.

so do the butterfly mod first. that will still reduce egr.
then block egr.
then do swirl mod.
 

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