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Other ways of modifying the 2.2 diesel
Just a quick question on modifications to the 2.2 diesel. There are several posts regarding remaps and tuning boxes but other than these are there any other engine modifications that you can make. In the past I have owned Imprezas and I know that air filters, exhausts, BOV's, decat pipes etc make a noticeable difference to performance. My knowledge of diesel engines is limited though, so would I be correct in thinking that other than the remap method one would be wasting their time?
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