Recently, I started to hear a buzzing/rattling sound from my HKS exhaust when my engine is coming down from high rpm. I took of the exhaust and notice there is something loose in one of the resonators.

I have read in several threads how people have removed the resonators from the HKS. For those of you who don't know, the HKS has 2 resonators. One that is on the piping that connects to the cat and another tube shape one between the mufflers. I have the rattle in the resonator that connects to the cat.

I was planning on going to an exhaust shop and have them fab some straight though piping that would connect the cat to the mufflers. I know this will definately increase the level in noise, but my question is, will I see any increase in performance? Will this hurt my performance?

I am pretty sure those resonators are in place to keep things quiet and definately restrict flow, but is this mod worthwhile and does anyone know about how much something like this should cost to do? Anyone suggestions, opinions, or comments would be appreciated. Thanks.

 

Would cost +/- $50.00;most resonnators,are a perforated straight pipe,and do not restrict flow.

 

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