3" or 2.5" cat back system?
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1st Gear Member
Joined: May 2006
Posts: 73
From:
3" or 2.5" cat back system?
Question on catbacks....
Does a MAC 3" catback system hook up to the stock cats? or will I need to change them as well.....(not that I shouldn't)....
Also, is there a huge difference between the 2.5 and 3 inch systems....other than the obvious?
Does a MAC 3" catback system hook up to the stock cats? or will I need to change them as well.....(not that I shouldn't)....
Also, is there a huge difference between the 2.5 and 3 inch systems....other than the obvious?
5th Gear Member
Joined: Jul 2005
Posts: 2,387
From: Georgia
RE: 3" or 2.5" cat back system?
Unless you're running some serious FI, don't get a 3 inch setup. It will virturally eliminate all back pressure and you're hemorrage torque with it. 2.5 inch is what you need.
5th Gear Member
Joined: Jul 2006
Posts: 2,663
From: NC
RE: 3" or 2.5" cat back system?
Unless you're running some serious FI, don't get a 3 inch setup. It will virturally eliminate all back pressure and you're hemorrage torque with it. 2.5 inch is what you need.
2nd Gear Member
Joined: Mar 2006
Posts: 289
From: Louisiana
RE: 3" or 2.5" cat back system?
also i had a question as well,with a bassani catted x with slp lm1's,im thinking about going with shorty headers,and just wondering will all this help with the horsepower or hurt it from not enough back pressure.
5th Gear Member
Joined: Jul 2006
Posts: 2,663
From: NC
RE: 3" or 2.5" cat back system?
You will gain HP, but shorties give minimum power compared to long tubes. If you do not want to eventually switch to long tubes and a shorty mid pipe, then shorty headers would be better then nothing.
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