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There is no way it can give the same power as a full race header because of the pipping size and design of aftermarket race headers. It is a cheap and easy way to get rid of the cat thow and free up so hp. You could run this with a comptech header and probably have a really good combo, but that puts you at the price of a BCRH.
 

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Its not worth it, unless they came up with some new space age design. You won't see any more top end power vs the stock cat. I know, I made a testpipe for this car. I dyno'd before and after, the power was the same throughout the powerband except at the VTEC crossover which yielded about 6 whp.

See my thread Here.

Save your money, cat converters these days flow very well while still serving there purpose.
 

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Has anyone tried this yet. I like the idea of the testpipe since you can put the heatshield from your stock cat around the testpipe so that it looks like you still have a legal cat.
 
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