Drilled hole in air filter box...

I saw where someone posted they cut the entire front of the airbox out. I took a more conservative approach.

I Drilled a 1 5/8 hole in the front of the airbox right in the center of the depression. Did not remove the secondary filter.

After doing so, I noticed the RPM at idle cold was about 200 higher. Also noticed the lag in acceleration that I was experiencing is gone.

I have filled up my fuel tank and am going to check mileage. It really is a moot point whether it's better or worse. I'm just curious. I am most pleased that the lag is gone.

 

Around here they call it a deck plate mod.

 

The deckplate mod has an actual deckplate in it. And its only beneficial to 1st gens.

 

Interesting

 

Agreed... Sub'd

 

Is this an easier way than say like a K&N ?? Just curious. What makes this more beneficial to 1st generations? 2nd gen. engineering solve this issue?

 

You should disconnect your neg battery terminal to help the ecu speed up the process of learning a new af ratio.

 

so when more air is introduced to the intake does the cpu compensate by delivering more fuel to keep the programmed ratio of fuel and air?

 

Don't you mean less lean and more rich?

 

But if you have less O2 and less fuel then you will still have the same AFR (provided the reduction in O2 and fuel are proportional

 

in my engineering classes..i learned that most car motors have a choke point in the air supply system and it is rarely the air cleaner.

on my old 911, i can take off the air filter and see zero benefit because the stupid air sensor plate is the restriction point.

any added risk to suck water thru that opening?