View Full Version : tune carbs

29-03-13, 02:03 AM
How to get a lil more power out of my dual carbs on my d15b4 engine in my civic. .

Any help will be good. :)

29-03-13, 07:16 AM
I'm assuming its an SU style carb?
If so, easiest way would be to get different needles for your jet.

02-04-13, 05:08 PM
These are a very poor carby setup. however try remove the emission gear, give the carbys a real good clean and make sure the chokes aren't seized. Also get a can of that subaru manifold cleaner and follow the process on the can I have found that effective on old carby cars especially if a elderly person has nursed it around most of its life.