2.5inc or 3inc system???
03 January 2006, 03:21 PM
#1
Scooby Regular
Thread Starter
Join Date: Oct 2004
Location: SHEFFIELD
Posts: 385
Likes: 0
Received 0 Likes
on
0 Posts
2.5inc or 3inc system???
Hello all just a quick question,
What are the differences in performance (if any) when using a 2.5 or a 3.0 inc exhaust system??? not sure which one to go for??
What are the differences in performance (if any) when using a 2.5 or a 3.0 inc exhaust system??? not sure which one to go for??
03 January 2006, 05:24 PM
#5
Scooby Regular
Join Date: Feb 2004
Location: My Beautiful STi is now sold, tho on the look out for another MINT scoob.
Posts: 799
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by DARKSSLASH
Is the 3inc a lot louder than the 2.5 or is there no diff once its a bigger bore??
So if your car is over 350 BHP go for the 3" all the way!!!!
03 January 2006, 05:41 PM
#7
Scooby Regular
Thread Starter
Join Date: Oct 2004
Location: SHEFFIELD
Posts: 385
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by cookstar
But.... if your not running particularly high power, can you suffer if the bore is too big?
Cookie
Cookie
anyone?
Trending Topics
03 January 2006, 05:51 PM
#8
Scooby Regular
Join Date: Nov 2004
Posts: 539
Likes: 0
Received 0 Likes
on
0 Posts
I was told the difference is in the spool up time of the turbo + differences in BHP or ft-lb....
you trade either way - the bigger bore = bigger bhp while the smaller one = more torque?
Could have got it wrong tho....
you trade either way - the bigger bore = bigger bhp while the smaller one = more torque?
Could have got it wrong tho....
03 January 2006, 06:11 PM
#9
Scooby Regular
Join Date: Nov 2005
Location: Lancashire & District Subaru Owners
Posts: 1,335
Likes: 0
Received 0 Likes
on
0 Posts
Another "I was told"
If you replace standard system with a 3in and esp if you change the induction or fit an uprated panel filter you should really be looking at a remap too - maybe someone will confirm/deny ?
If you replace standard system with a 3in and esp if you change the induction or fit an uprated panel filter you should really be looking at a remap too - maybe someone will confirm/deny ?
03 January 2006, 06:17 PM
#11
Scooby Regular
Join Date: Aug 2002
Location: Turboland
Posts: 5,082
Likes: 0
Received 0 Likes
on
0 Posts
2.5'' will be better I think IMO, also seen dyno results at xtreme scoobies and tests theyve done with the 2. Three inch is better for bigger power and high speed runs. Apparantly its a common misconception.
I had a blitz 3'' full system and the car actually run seemingly a bit slower on the roads, but high speed motorway the thing was rapid
once the standard centre and back box was on it is more pokey now.
I had a blitz 3'' full system and the car actually run seemingly a bit slower on the roads, but high speed motorway the thing was rapid
once the standard centre and back box was on it is more pokey now.
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
28
28 December 2015 11:07 PM
Mattybr5@MB Developments
Full Cars Breaking For Spares
12
18 November 2015 07:03 AM
crazyspeedfreakz
Wanted
17
05 October 2015 07:19 PM