remove smog??

the 24 Lb injectors won't do anything positive for a stock engine. You would need need an aftermarket MAF or custom dyno tune to accomodate them.

Removing the pollution control equipment from a 5.0 Mustang is a bad idea. All you have accomplished is to make the computer mad and spit codes. The pollution control equipment all shuts off at wide open throttle, so the HP losses from it on the car are 2-5 HP. The catalytic converters may soak a few more HP than that. None of the pollution control equipment reduces the HP enough to cost you a race in anything but professional drag strip competition.

Know what does what before removing it. Remove or disable the wrong thing and the computer sets the check engine light and runs in "limp mode". Limp mode means reduced power and fuel economy.

Here's a book that will get you started with how the Ford electronic engine control or "computer" works.

Ford Fuel Injection & Electronic Engine Control 1988-1993 by James Probst :ISBN 0-8376-0301-3.

It's about $30-$50 from Borders.com see http://www.amazon.com/ . Select boo...e to check cars, but it is still Federal law.

Is there a way to delete the smog and not throw a check engine light?
I bought a 93 GT that already had the smog removed, but have a 90 GT with it still on it. I'm keeping the 93 and selling the 90... now wondering if I should grab it off the 90 and install on the car I'm keeping.