Exhaust question

Reply Subscribe

Thread Tools

Search this Thread

01 May 2010, 06:03 PM

hawkeye_WRX

Scooby Regular

Thread Starter

iTrader: (1)

Join Date: Feb 2010

Location: Wiltshire

Posts: 74

Likes: 0

Received 0 Likes on 0 Posts

Exhaust question

Can somebody explain to me the difference between a complete 2.5" decat system and a complete decat 3" system? Are the power differences vast?

Thank you

Jack

Reply Like

01 May 2010, 07:39 PM

Midlife......

Scooby Regular

iTrader: (2)

Join Date: Feb 2004

Posts: 11,583

Likes: 0

Received 2 Likes on 2 Posts

It depends on how much air needs to flow through the system...... for 400 odd BHP the sheer volume of exhaust gas can't escape quickly enough from a 2.5" system and restricts performance.

I ran 325 BHP on a 2.5" decat system OK