tooter's manifold adventure...

[malibuguy]

Originally Posted by 4/20 NEVER FORGET

I was also going to guess exhaust... but with you living in Los Angeles, I imagine you cannot even think about messing with the catalytic converters without fear of the man breaking down your door.

I'm about to move to a full 2.25" header-back exhaust using a OBX exhaust system as a base along with a single 2.25" magnaflow cat, 2.25" magnaflow resonator and 2.25" magnaflow muffler. I've also been thinking about buying another DC header and having the collector modified to 2.25", being that it is 2" now. I know there is more HP in there if the exhaust system can get freed up a little more. 2" seems so small for a collector on these headers, all of the 1.6L Honda's I worked on were either 2.25" or 2.5".

Either way, I need to find a shop to get this thing dyno'd so I can get a baseline. Thanks for so diligently getting your car dyno'd, it's great to see actually numbers instead of 'seat of the pants' reviews on stuff.

I work on A LOT of hondas. Most of the header outlets are 2". Even for a b18 teggy I worked on last tuesday. Dont let the small collector fool you. 2" is just about perfect for our motors. You want the exhaust gases to be at a high velocity when leaving the motor. The stronger the pulse...the stronger the vacuum behind that pulse. Thats what makes power. The larger the pipe the weaker the pulse strength would be and it will be traveling at a slower rate