Originally Posted by
NitroOB4You
So, I just ran about 1/2 tank through the "Bat" pipe. I am running it on a Jammin JPX .21, which is the mill I will have for Truggy @ MotoRama (will be running ET's in my buggy for the summer

) Anyway, all I can say is...WOW! Now, granted, I havn't had it on a track yet, so I can't say right now what it will be like in racing form...but just beating around in my back yard, there's a huge difference compared to the JP3 I had on it. Nice low burbling idle, bottom is solid, SICK mid range to top. All in all, I think Im gonna really like this exhaust and can not wait 'til Friday to practice on track!

Im debating between the extech .21 or the jpx .21 with the "bat pipe"
Which did you like better? both are $229 engines...going in st-rr