One more exhaust question

Alright I know that exhaust is getting old so I will try to make it older. Since the stock wr exhaust with the insert out is a straight thru muffler, does it flow the same as aftermaket mufflers? Also to realise some horsepower gains would it be possible to put on a different header while still utilizing the stock muffler? (FMF Power Bomb)

I have heard that it is better to replace the exhaust as a system, but that is around $400 versus less then $200 for the header. I really like the idea of being able to change the oil with out loosening the header pipe and also a bigger hit in the middrange with more top end to go with my YZ timing would be sweet.

Thanks for any answers

Angel Boy

Speed cost money, how fast do you want to go? You would love a DSP pipe with the straight head pipe. But that will cost some of that money I was refurring to. But well worth it.

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