Don't know anything about these air foils. They look like they would def. increase flow through the TB, but do they really add 6-10 HP?

eBay Motors: 85-97 Firebird Trans Am Z28 New Air Foil TPI LT1 (item 250028351930 end time Sep-14-06 20:45:00 PDT)

 

No and it's not worth it... Switch your engine oil to synthetic and you'll see more gains than that lol

 

This is discussed every week in the product review section. Search, youll see how lame of a product this actually is

 

If you can find one for less than 10 bucks take it if not screw it.

 

I always wondered about that airfoil thing. TPIS has dyno results that show the air foil works, But i guess thats only on a modified motor where it would require more air.

 

I wouldn't trust what TPIS says, afterall they are trying to sell it and thus make a profit.

 

Well I don't know about the rest of these guys but once I added my air foil to my CAI system, it now sounds like a supercharger. Before it sucked in air nicely (custom cai that takes air in from the pass. side fog light hole) and now with the air foil, it sounds mean! It was free too

 

Every little thing helps. Unless you can pick one up cheap, then don't bother. If you can, then they are worth a couple HP.

 

It's been a while since I saw the test but the Holley airfoil is better than the others for sale. So, if you get one get a Holley airfoil.

 

when i bought the my car a year ago, its came with the airfoil but it wasnt installed. i drove the car without it for a wile until i got bored one day and i put it on. i did no gain in power, but it makes a cool supercharger sound. if you can get one cheep, do it, but dont get ripped off. i can see how it can reduce drag in the TB, but with the stock motors most of us have, it does not do that much.

 

GM High Tech Performance tested a Holley air foil on an stock LT1 a few years back, and it gained like 4 or 5 hp to the wheels from what I remember.