Just bought a GTA with the 350/auto combo and switched over from a 92 v6 firebird (great mpg, and for sale now) and was wondering what the best mods would be for my new car to get the mpg up. I've already got the k&N, air foil, and cat-back. What next and what kind of MPG has your cat achieved?

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~3.1EyeCandy~

'92 Firebird 3.1 (A car for sale now)

T/A Hood, New Paint, Custom Sound w/subs, T-Tops, K&N fcharger

My new baby: '87 flame red GTA 350 w'auto
Carmine interior with pioneer all around
Hooker Catback, Airfoil, K&N
http://www.3.1EyeCandy.tripod.com

 

I got a very slight gain in my MPG with the headers from Edelbrock I installed.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

 

Learn how to burn your own eprom and invoke "Highway Mode" in the eprom. I get almost US 30 mpg on the highway with my L98, and then when I stomp on it, I have an optimum eprom for WOT. You actually do get to have your cake and eat it when you burn your own eprom.