I have a t4 exhaust i am wondering if i take out the spark protecter will i get more power or less? can i create not enough back presure by taking it out, if anybody wants to add there thaughts it would be apreciated.

 

I have the t4 also, and I ran it with the spark arrestor for three months and then took it out. We could tell no difference when jetting it. I had to pull mine out to do the jetting (exhaust gas analyzer), and I have seen no reason to put it back in.

Justin