Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Full 3” exhaust vs half 3” with 2.76” on FI

gtengr · 02-03-2018, 07:53 AM

Tough to answer. Exhaust cools and contracts as it flows through the system, so a 2.76" rear section may not be as restrictive as 3" coming out of the turbo. On E75 the 3" pipe is probably restrictive too.

02-03-2018, 07:53 AM	#3
gtengr Senior Member Join Date: Nov 2016 Drives: 2017 BRZ Location: USA Posts: 655 Thanks: 326 Thanked 258 Times in 177 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Tough to answer. Exhaust cools and contracts as it flows through the system, so a 2.76" rear section may not be as restrictive as 3" coming out of the turbo. On E75 the 3" pipe is probably restrictive too.