yes its louder.. if you wanted it louder then i spose you could take the rear resonator out.. I've got my old 2 1/4 with rear res taken out sitting here if you wanna make an offer..

side note noone has mentioned yet - you cannot make your vl rb30 sound like a r32/33/34 skyline. these skylines run twin cam heads so the burble just won't be there. the general rule is 2.5" with extractors or 2 1/4" without. I ran 2 1/4 with extractors and backed up with a highflow air filter. this is what ui'd recommend. it gave a 39*,***km engine a new life and a nice note that wasn't droney. I used the standard Cat converter. From my experience 2.5 is too big. it's droney and sucks the low end power from an n/a. the 2 1/4 retains the power and the note is nice and loud without rattling the hell out of the car and giving you a headache. 3" is ridiculous. it actually sucked power from my otherwise standard vl turbo so on an n/a it would be terrible. ---------- Post added 23-10-11 at 12:37 ---------- in summary -0 the 2 1/4 is loud when you smash the accelerator but will drive at a reasonable purr through a booze bus / through residential streets etc. the 2.5 will drone everywhere and be loud when you stomp it but the car will become noticably laggy without a few more engine mods than extractors and a filter.

Why would you want a loud NA, its just drawing attention (possibly from the police) to a car thats slow :P

bought my car with extractors and 2.5" thru, find the bottom end has like nothing, i gotta 5 spd as well. very loud...

I had 2 and 1/4 on my old one years and years ago, best exhaust I had on it, went 2 and 1/2 after that, it didnt sound as good, and was louder.

My cousin had a 2 1/4 on his turbo, it sounded like it had a screamer at high RPM, completely silent at idle

haha yeh i miss the zorst shame lol the 2 1/4 screamed in revs haha although def goes better now with the bigger zorst but, for the na i wouldnt bother with bigger zorst spend ur money on something better