It's probably all in your head. After i got my 70r sparrow on, I feel like I actually gained a little bit at the low end- mid end.

 

What is a "fifference?" I Googled it and got nothing.

 

^hahaha

j85rsxtypes - there is nothing to worry about, if i were you i would keep it. and again, post some pictures/video

 

i was going to post up vids today but had to work over time, i think its going to be a weekend project.

 

the difference is the piping, the 70r has a 70mm main then splits to 2 63mm. pipes. The normal sparrow has 63mm main and splits to 2 50mm pipes.
How do you like it?? Im about to get the 70r myself, its not too loud is it?