Stillen Y-Pipe is just a straight pipe and does not have any resonators in it, Will it make my stock exhaust go drone, rasp or anything? Make any difference on my exhaust?

The only thing i know is that it gains a few hp.

im still new to this whole modding stuff

 

sound may change slightly but nothing incredibly noticeable. as for gains, probably not noticeable either...i would skip the y-pipe and go with a plenum spacer or hi flow cats. what kind of G do you have?

Heres a good place to start for ideas on what to do to your G to change the sound and performance

 

Uphill around 2-3 k you will
If ur a sedan with coupe middy