Any bolt on mods have the added ben. of improved fuel mileage on the LT 1 in a 94 Z?

 

anything that makes the engine breath more efficiently

i installed a low restriction air intake on my gf's 4.0L Jeep wrangler and she picked up a consistent 1mpg city and 2mpg highway.

when i installed my magnaflow catback on my LT1 i gained a consistent 1mpg highway.
around town it didnt' change...was on the trottle more to hear the exhaust

hell i still get 25mpg highway on my 400rwhp cammed LS1

 

Some things to consider:

• Good tune up including O2 sensors.
• You could go with a custom tune; GM enriched more is on the rich side.
• Proper tire pressure.

 

After doing all of the following in one lump sum, I noticed a drastic improvement in fuel economy:
-long tube headers
-off road y-pipe
-3" catback
-new plugs,wires,02 sensors, and fuel filter