anyone try this yet?
in the video it says that the difference of short pipe to long pipe is only 500rpm.

Im thinking that since our evo gsr has a high rpm cruise (4k rpm at 75-80mph), then we should probably get the longest pipe huh?

 

We used this on an srt-4 couple weeks ago, we found that the NOdrone works best if it is mounted closest to the engine as possible. On the downpipe or test pipe ideally. The sooner you catch the exhaust pulse, the better chances you have at reducing the cabin noise (droning). Length really depends on how bad your droning is. If it is really bad and fitment is not an issue, try running the synapse nodrone 18 or even 24ss or mild steel.