air flow

[BIGBLUE1212]

Hey everyone....i have a 97 gt 2.5

 

ive heard people drilling holes in their airbox to get more airflow but they said the manifold is only 1 inch wide wo it defieats the purpose....the thing is the cars they were debating over were carb models 89's 90's 91's etc....but mine is fuel injected.....would it have a larger throttle body hole?....the air tube seems to be larger as well......so if i were to drill holes into my airbox would i see an improvement or basically no improvement like the early 90's carb models...

 

Also the hole in the airbox for the air to come in is smaller than the tube that goes to the second airbox before the throttlebody....

 

Thanks

[Legacy777]

Remove the air snorkel in the fender. That will help the air flow into the engine, and is a lot easier then drilling a bunch of holes in your airbox.

[nipper]

Back in the day this was true, that engines were choked. Now with emission laws, noise laws, and HP wars going strong, everything is done to possibly get as much HP out of an engine as possibl.e This can be seen when any mfg gets all bouncy because they squeezed out 5 more HP then last year.

 

Engines breath fairly freely. The engineering done is well balanced between perfromance and real life. YOu can remove the air snorkle in the fender, but air flow is an amazingly complicated science. The snorkle is there to help keep crap out of the airbox. So depending where you live you may or may not be able to remove it. Poking holes in the air box can disrupt the ram affect through the airfilter that comes from the snorkle.

 

Also dont put a high flow air filter on the car, especially if it is oil impregnated.

 

True there are a lot of things you can do to add more power, but ask yourself what do you want your car to do. Do you want more power, at the expense of reliabilty (the air filter for example).

 

Subaru must be doing something right, as the cars regularly see 200, 000 miles (and alot of us are heading for 300,000 miles). These are tough cars. If somone wants a high performer, one needs to get a turbo. If you want good all around performance, just keep the car in tune and it will love you.

 

 

nipper