Just bought a 2006 IS350, and was wondering what would be the best mod for an exhaust that would not affect my fuel economy in a negative way. Also what MPG are you guys getting for ur 2006 IS350?

 

I don’t think any exhaust modifications will hinder your fuel economy. Do you prefer something loud ? Looking for HP increase?

 

I dont anything too loud like straight pipe, and if I get a little power out of it I'm not complaining. Just want the car to be a little louder than it is stock.

 

Tanabe is the most quiet. Sounds good and is a high quality piece. Fsport is great if you can find them. Hks is loud. Megan has the rs type and drift spec , both sound good. The invidia can come as a cat back or axleback. Greddy has just rereleased their axle back as well . There’s more expensive options like the ark and the Joez ( both catback) I have the tsudo and that one sounds nice and deep and was attractively priced. There’s also some ebay type units that may not be of the greatest quality.