Hey guys,

i took the cover off my engine bay this morning and notice from that and also by looking through the front grill that most of the front grill is blocked off by some plastic

and once i took the engine bay cover off, i notice the port for the air to come into the air box was situated on the top where i would think its not getting much air flow since the front grill is blocked off

am i correct? would removing the stuff blocking the front grill give it better air flow?

heres a picture of what im talking about, the air scoop is circle in red and the 2nd shot shows how the front grill is covered up

 

i think having everything crammed under the hood would be a major restriction as well.

on another note, how does your K&N sound?? much different than stock sound?

 

i just like how it keeps the engine bay clean.

 

my car is the 2nd pic

1st pic is friends car

 

heres a pic of a grill without the stuff blocking the front grill

 

I dont see what you took out on the last pic compared to the first..

 

the last pic, behind the grill where the L emblem is, there is nothing blocking the airway

the 2nd pic has a piece of plastic blocking it

i was just wondering if many IS250 owners have removed this piece of plastic behind the grill

 

IMO I would say that helps, cold air is always a good thing.

 

I wouldn't say that:

1. Cold air is always a good thing.

2. The change improved the situation in any way.

A lot of stuff about airflow is counterintuitive. Gas molecules are funny things and they don't always behave the way you think they should.

You can easily make 206 hp with a 2" intake tube. So, about 6 square inches of cross section will flow more than enough to make 206 hp. There is easily that in the openings in our plastic airflow management piece.

If you really want to see if you made a difference, monitor intake air temperature using the OBDII port.

And don't forget, warm air improves thermal efficiency at part throttle, sometimes a lot.

 

Plus all the short ram intakes like the K&N don't take advantage of the stock air intake which is basically a fairly good CAI.

IMHO, a solid aftermarket exhaust for the 2IS would incorporate the stock CAI, modify the pipe from the stock CAI to the airbox to be smoother (although its almost optimal now), have a high flow airbox to a JoeZ style tube.

Ok sounds like I might have to homebrew this since all it'd require is:
a) JoeZ tube (got one),
b) high flow filter in the airbox (got one),
c) checking the stock CAI pipe and seeing if there are any more optimal designs (which someone did in the past, think the result was there could be a better design, less bends),
d) potentially taking out the extra filter in the stock airbox (although results have been very inconsistent here, and no extensive gains testing has been done).

 

if you come up with something, please let us know

ahahha

 

Actually, the K&N does incorporate the stock air intake. It's got an opening built into the heat shield and places the filter element directly at the mouth of the stock cool air duct. I modified my K&N slightly to create more of a vacuum in the heat shield to maximize use of the stock cool air duct.

Javier

 

Thanks Javy, I don't think anyone clearly mentioned that in the past.

Might have to check out the K&N then as a potential JoeZ replacement.

 

For cooling, what you are trying to remove woud improve that. You'd have to do some real work underneath to to get a CAI.