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      01-09-2017, 04:02 PM   #1
kiysersosae
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Drives: 1M, M2CS, M3CS
Join Date: Jul 2013
Location: United Kingdom

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Catted hjs Sports downpipes, are they really worth the cost?

Was looking at the performance difference between all the sports cats with 300 cel HJS internals and Fabspeed aside, performance increase is only reported as 9 - 12bhp by Akraprovic and Miltek. There is obviously an improvement on sound and people report throttle response improvement.

What I'm asking is at £1200 is it worth it?

And, if I went with no cat (downpipes for £300) would a tune be needed? Not fussed about the check light as I can reset this. I did run no tune and no cats on the 1M and never had an issue. When I had it on the dyno the afr was absolutely fine.
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