Viltor Posted July 24, 2015 Share Posted July 24, 2015 Hi everyone, My car has the stock headers, and a 60mm external exhaust pipe, the internal diameter its 2.25" if im not wrong. My question is I found this cheap headers 4-2-1 with a outlet 2" (50mm) http://www.ebay.co.uk/itm/Exhaust-manifold-header-Honda-Civic-DEL-SOL-B16A-B16A2-B18C-B18C4-B18C6-VTI-/281756763667?pt=LH_DefaultDomain_3&hash=item419a030613 Would be this a nice upgrade ? Would I noticed the difference between stock headers with this one ? Or should i go for 2.5" instead ? My engine is stock, Im just running a K&N Filter, just wanted the car breathe a bit better. Thanks Quote Link to comment Share on other sites More sharing options...
KiNK43 Posted July 24, 2015 Share Posted July 24, 2015 Yes mate there will still be a slight improvement. Some would argue 2.5 is too big for a c4 as you will sacrifice low down torque.Standard honda manifold actually measures about 1.7" so 2" would still improve breathing. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.