airbox mod
#121
Yes, the S air filter is way over kill for a 2.0/2.2 engine.
I put a restriction gauge in the intake tube to tell me when to change out my air filter and found that with the lid on I got 8"(H2o) of restriction and with the lid off I got none.
https://www.s2ki.com/forums/s2000-un...iction-921933/
I then put 90k miles on that air filter over 6 years and the restriction was still 8". I changed out the filter due to years of servive, not restriction.
https://www.s2ki.com/forums/s2000-un...ilter-1163927/
We have over 35k miles on this filter and it reads 0". I added a 2 3/4" or 3" hose to the end of the air box and ran that hose down to the fender well.
That got rid of the restriction that the stock air filter box had. Didn't change gas mileage or power(that I can feel anyway) but I wanted to to see if I could get rid of that restriction.
ROD
I put a restriction gauge in the intake tube to tell me when to change out my air filter and found that with the lid on I got 8"(H2o) of restriction and with the lid off I got none.
https://www.s2ki.com/forums/s2000-un...iction-921933/
I then put 90k miles on that air filter over 6 years and the restriction was still 8". I changed out the filter due to years of servive, not restriction.
https://www.s2ki.com/forums/s2000-un...ilter-1163927/
We have over 35k miles on this filter and it reads 0". I added a 2 3/4" or 3" hose to the end of the air box and ran that hose down to the fender well.
That got rid of the restriction that the stock air filter box had. Didn't change gas mileage or power(that I can feel anyway) but I wanted to to see if I could get rid of that restriction.
ROD
#122
I put a shorter but typical size 6"x5" afe filter with the added center filter built in and started pulling vacuum at 7k rpm, so ditched that one and went with a larger then stock 8"x11". I wouldn't go any smaller then stock on this engine. Its sized appropriately. Definitely if you are sticking to more restrictive paper.
This engine breaths heavy at higher rpm, as much CFM as some v8's.
This engine breaths heavy at higher rpm, as much CFM as some v8's.
Last edited by s2000Junky; 05-31-2018 at 01:06 PM.
#124
I'll say one thing about the GT350 is it has one of the best sounding engine I've heard.
ROD
#125
I put a shorter but typical size 6"x5" afe filter with the added center filter built in and started pulling vacuum at 7k rpm, so ditched that one and went with a larger then stock 8"x11". I wouldn't go any smaller then stock on this engine. Its sized appropriately. Definitely if you are sticking to more restrictive paper.
This engine breaths heavy at higher rpm, as much CFM as some v8's.
This engine breaths heavy at higher rpm, as much CFM as some v8's.
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03-12-2014 01:17 PM