With our exhaust all buttoned up, we went on a test drive. We were pleased to report that the Greddy system did not add any new rattles or clanks to our car, the good fit is really paying off here.
What really surprised us was how quiet the exhaust is. We were worried that it would be loud and the thin-wall tubing would buzz and resonate. The system is actually not much louder than stock when cruising at part throttle, does not drone at all and at full throttle has a nice note. If you have been around modded GT-R’s you know that the wrong exhaust can make these cars sound awful. Not so for Greddys part.
Perhaps the best part of the Greddy Supreme Ti exhaust is the aforementioned weight savings. When we weighed the stock exhaust, it surprised us by weighing 69.2 lbs! As we mentioned previously the Greddy exhaust weighed only 27.4 lbs for a 41.8 lb weight savings! This means that through careful parts selection we have been able to pare an amazing 100 lbs off of the porky GT-R with no loss of function or utility!
Stay tuned, we have tons more to do to Project GT-R’s engine and we will be adding more stuff from Greddy and some cool stuff from Cobb with dyno data in the very near future.
6 comments
Did I miss something? this looks like an off-road system with no cats
no cats = less weight
It’s running the front cats. Most of the weight reduction is still coming from the material selection.
Well that is just one of the best welding performances I’ve ever seen.
Right? It’s amazing.
It would be cool to see GReddy come out with a side-pipe kit for the GTR, where the exhaust comes out right behind the front wheels. That would save more weight, and require less material. I imagine the sound in the cabin would be brutal.
It’s pretty technically impossible to do on a street car, it would involve cutting holes in the unibody.