ok installed the aebs manifold today I wouldnt say it was smooth but not to much work.
A few problems I ran into,

- needed to grind down part of the casting so it would clear the altenater bracket.

-fuel rail bolts a little long just used shorter ones.

-Hondata gasket would not fit, the flange on the aebs is thicker than the stock and didnt have time to get longer studs, so used stock gasket. You could also grind down the manifold without ruining the integrity of the design, I saved that for another day.

-Remember to get extra vaccum plugs; there are 4 i didnt use. Also, have tb gasket, iacv gasket, injecter rings on hand when you change your sensors over.

Other than that pretty happy with the install powerband is alot smoother, and feels like there is more pull between 4000-5500 rpm's

Not an expert just putting out the info for anyone else changing manifolds.

 

 

cool if you smooth out the runners and the inside of the manifold u get smoother air flow = HP cuz the casting on the aebs suck but its a great manifold

 

yep, smoother it is, the better it will flow, however, you don't want your intake tracts too smooth, or you'll have problems with fuel atomization, you need a little bit of a scuff at least, otherwise the fuel will spray in more of a solid stream instead of a mist, but for the manifold it's not such a big deal, it's if you port match the head or if you do a pnp, just a little trick that most people overlook. The opposite is true on the exhaust side, the smoother the better!

 

what would happin if the intake ports were smoothined out?? would it hurt power???or just run shity??? i was wondering this 4 a wile...??

 

well if they're smoothed on the head, the fuel will be more likely to stay as a stream instead of misting, which means it's harder for it to ignite. . .

the best technique is to do a PnP and then on the intake tracts scuff it up lightly with a scotch pad or some sand paper. It doesn't need to be really rough, just not glass smooth. the small imperfections help break up the fuel stream. Any good machine shop should know how to do a proper PnP.