Quote:
Originally Posted by torqdork
Why would someone prefer one over the other, merely sound or actual HP gains?
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You could say both.
People have been saying EL outperforms UEL but after looking at many dyno graphs, it looks like it mainly comes down to the header AND tuning. There are UELs that show a % gain from stock similar to most EL.
It looks like the top dollar (~$1k+) ELs provide the most gains though.
So... mainly sound I suppose.