supertrapp 250x/300?

[nismo]

i am thinking of buying a supertrapp exhaust (for my 87 250x) it is the 4" aluminum racing series. is it any good? can i make it sound close to stock? it also says it comes with a head pipe. how will this improve my power?
and what about jetting with this exhaust all i have is a uni filter?
thanks

[bradley300]

you will feel a very noticeable power gain, especially mid and top, take as many disc out to make it quieter, more makes it louder, adds hp.

[nismo]

thanks for the info
now for the hard part trying to get my parents to let me buy it

[nismo]

any ideas on jetting mine is on the stock jetting? i live in ny not sure of the sea level. and how much are jets?

[bradley300]

no idea what to jet it, jets are about 2.50 a piece for mains