RB S3
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- Nov 25, 2014
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Hi guys. am having the s3 custom stage 2 mapped by rtech shortly and have hybrid ko4 along with everything else needed to make 350bhp if all goes well. So question is I have pro 4 manifold into 3 inch downpipe and decat then standard rest. So planned on taking it to MIJ for a custom exhaust.
Will 2.5 inch be enough or do I need to go 3 inch?
Thanks in advance
Will 2.5 inch be enough or do I need to go 3 inch?
Thanks in advance