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Exhaust question

Dar-Dar

Mordorator
19,329
9,901
North NJ
Vehicle Model
Civic Si
Body Style
Fiji Blue Pearl Coupe Coolest Member Since: May 15, 2011
Not hard. All you need to do is remove the existing axleback which is held by 2 bolts and a rubber hanger mount. When you install the Si axleback, you would also need to bend the hangers so the exhaust tip would sit a bit lower or the rear bumper would partially block the exhaust gas. Lol.
 

Nix

Jötunn Moderator
10,765
8,162
Lew-vul, KY
Body Style
It's A Fast Pig!
Just the axle back section. The muffler. The rest is different. You can't swap the whole thing.
 

Nix

Jötunn Moderator
10,765
8,162
Lew-vul, KY
Body Style
It's A Fast Pig!
No, the Si is slightly larger. However if you get an SI axleback just buy a gasket for the Si and smash it in between. You may have to space out the springs with a couple washers but you shouldn't get a leak.
 

Nix

Jötunn Moderator
10,765
8,162
Lew-vul, KY
Body Style
It's A Fast Pig!
No problem man, just make sure he knows the cat-back section and mid pipe wont fit but the axle-back will fit nicely. Sometimes a little bending of the tangs is necessary.
 

LionHdz

Well-Known Member
65
22
I need help I installed my invidia q300 exhaust on my coupe si and it sounds like the exhaust is hitting my car
 

Nix

Jötunn Moderator
10,765
8,162
Lew-vul, KY
Body Style
It's A Fast Pig!
The OEM 2012 Si Exhaust Axle Back Section does not fit the EX/LX R18 without welding and cutting. It is not a bolt on affair like it was with teh 8th gen. A 2006-2011 Si axle back with fit the 2012+ R18.
 
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