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914World.com _ 914World Garage _ Discrete L-Jet Air Box Mods

Posted by: pete000 Feb 8 2016, 07:55 PM

I was looking at the air box on my 1.8 L-Jet and it seemed to be a bit restrictive with all the air entering through a small opening in the snorkel. I wanted to flow a bit more air but wanted to retain the stock look. Not a big fan of "Cone" filters.

Picked up an extra box and made some mods. I did notice there is a restricter flap in the stock snorkel entrance that I am sure is there for some reason or another (sound, air wave frequency, turbulence, whatever). I decided to cut it out so it would be straight through. I also added a large hole in the front side of the box which will allow a lot more air volume to enter the intake.

I know this is engine compartment air it is breathing, but the opening is not that lower than the snorkel inlet so the air temps would be similar.

Easy mod and it does seem to pull nicely on my seat of the pants dyno.

I know this might be mental gains in Horsepower.

Looks stock and is very un noticeable.

I was surprised it doesn't seem to make additional noise either.

Attached image(s)

Posted by: AndyB Feb 9 2016, 10:12 AM

I blocked mine off and ran a cold air intake through the rocker cover. It still utilizes the stock air filter and its not sucking in warm engine air.

Andy

Posted by: malcolm2 Feb 9 2016, 10:59 AM

Hay, when your car becomes a "ran when parked" the mice will have a side door...

Posted by: r_towle Feb 9 2016, 01:51 PM

it would be great to get that on a dyno with both air filter setups to do back to back testing.

rich