Pro_fan

Jerry,
Did you help or see the removal of the old stock air box and other intake parts? How hard is it to do? Just curious as I may get a CAI and install it myself. Thanks!

OZProtege

I have an Injen CAI and I'm a little worried about the filter. They do say it out-performs every other filter out there, but did they trade engine protection for this higher flow? There is nothing on their website that mentions particulate size or even remotely talks about the quality of the filter.

If their filter does in fact suck, which I suspect it does, I want to buy a K&N or somethings else to go on the end of that shiny tube that will actually protect my engine.

If you know more than I do about this, please post your comments.

jstand6

I was not present for the removal of the old intake. I'm sure it's a fairly straight-forward task, but I would imagine accessing some of the bolts isn't very easy.

I was surprised at the size of the stock intake. It's huge and reaches all the way down to the bottom of the car with some type of resonator box! The Injen techs took it appart in three pieces. They also used the stock MAF (Mass Air Flow) sensor and the Intake Air Temp sensor for the new intake. The installation manual should detail everything, but they are still making that manual, so I haven't seen it.

-Jerry

ZoomZoomH

that filter element looks almost identical to the stuff on my K&N drop-ins. Do you know if it's also oiled?

jstand6

I just called Injen and asked them about it. They said they use a four-ply cotton gauze just like K&N does. They said their filters and the K&N filters are practically the same except for the molding. I don't know if this helps much.

-Jerry

twotone

man this totally helped me out i didnt know it used the washable type. im ordering one this week ! that will save me some money in the longrun!!!

is there a place on the web with detail directions on install maby with picts?

reply soon please!!!

installing myself will save me 50.000 bucks

mahalos from hawaii

chdesign

As for the debate on the 1.8 and the 2.0 the 1.8 has quicker revs due to the reduced rod size and gets to its peak power quicker. In all the tests I have seen the 1.8L pulls better numbers than the 2.0 it could be the wheels but i doubt it that much. Americans are obsessed with larger engines being better and they don't look at the benifits of the smaller ones hence why ever 5.0 mustang out there think he can beat anyone when a EG hatch civic with a GSR swap could rip him a new one.

carguycw

Huh?

The 1.8L does not have "quicker revs" due to the shorter stroke (BTW the 1.8L has LONGER rods than the 2.0L). The shorter stroke gives it higher ultimate rpm potential because of reduced stress on the reciprocating parts, but it has NOTHING to do with how quickly it will rev. More rotating mass (heavier wheels or a heavier drivetrain) will hurt wheel hp and acceleration, which may explain the discrepancy between the 1.8L and the 2.0L. However, I guarantee you that the shorter stroke has nothing to do with it.

BTW the reason an EG hatch Civic with a GSR swap can keep up with a Mustang is because of Newton's Second Law: force equals mass times acceleration. To increase acceleration, you increase force (Mustang) or decrease mass (Civic). It has nothing to do with some "magic" advantage of smaller engines.

zeus

Ah the good old power to weight ratio. It’s said that loosing 100lbs is as good as gaining 10hp, and sometimes loosing weight is easier than making more power.

IMO, a shorter stroke will generate less mechanical losses at higher RPM, resulting in a slower drop off of output torque. A close look at dyno graphs of the two motors should show that while the 2.0 makes better low end torque, the 1.8 makes better high end torque, which results in similar peak hp. Also a shorter stroke would normally result in a lower rotational mass at the crank and the motor would rev better. With this in mind I’ve been hunting up a late model 1.8 to build and drop in my Pro5, and I may have located one in a yard on the Jersey coast. Anybody live in the area that get me a visual inspection on the motor before I have it shipped to Florida?