Quietest catback or axleback system?
 

There are a lot of options. What do people say is the quietest non stock system?

Invidia Q300

Csg mxp touring 86 almost stock volume but better sound

ARC GRiP

Invidia q300 or greddy sp axleback (discontinued)

STi JDM axleback.

Fujitsubo Authorize S axle back
Greddy Supreme SP catback

For me it was:

FT-86 SPEEDFACTORY V1 CAT BACK EXHAUST (RESONATED) paired with the FT-86 SPEEDFACTORY CATTED UEL HEADER.

I don't like loud exhausts, I just wanted a little louder than stock with more tone. This is perfect for me. At first, I thought it might be borderline, but its just right with no drone and its quiet under cruise. It would be even quieter without the header. Excellent build quality and fitment.

I would go with CSG touring 86 for the quietest setup. It is still 8 pounds lighter than stock. If you can tolerate more sound (louder than CSG but much quieter than Invidia N1), HKS SpecL HiPower is one of the lightest you can buy.

Ace LG90


/thread

HKS Legamax Sport
Tom's Axleback
Nivida Q300

+2 on the CSG Touring catback!

My invidia q300 has got a little raspier and louder when on it, but only out of the drivers side tip. Weird. At idle it’s quiet.

Perrin 2.5" resonated. The 3" is a little deeper and I think sounds better, but it is a little louder