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Debonair · 06-06-2013, 04:56 PM

Back in Fanuary I picked up a 1999 Firebird Formula 6 Speed 5.7L.

It has bolt ons and a very very rich tune (Haven't had the chance to get it detuned)

When I started driving it I was getting 15-16 mpg (City driving).

I bought an ultragauge and after getting it calibrated correctly, I'm seeing about 21.5 MPG. I usually average about 23 for most of the tank, but when I hit traffic and, not so smart drivers, it plummets quickly.

Pretty content with that. its become my daily driver as I'm working on my truck.

06-06-2013, 04:56 PM	#1 (permalink)
Debonair EcoModding Lurker Join Date: Sep 2011 Location: New Jersey Posts: 53 Camaro - '00 Chevrolet Camaro SS 90 day: 16.18 mpg (US) S10 - '95 Chevrolet S10 LS 90 day: 15.84 mpg (US) Formula - '99 Pontiac Firebird Formula 90 day: 21.14 mpg (US) Thanks: 3 Thanked 0 Times in 0 Posts	5 MPG increase in Firebird Formula Back in Fanuary I picked up a 1999 Firebird Formula 6 Speed 5.7L. It has bolt ons and a very very rich tune (Haven't had the chance to get it detuned) When I started driving it I was getting 15-16 mpg (City driving). I bought an ultragauge and after getting it calibrated correctly, I'm seeing about 21.5 MPG. I usually average about 23 for most of the tank, but when I hit traffic and, not so smart drivers, it plummets quickly. Pretty content with that. its become my daily driver as I'm working on my truck. __________________ [url=http://ecomodder.com/forum/em-fuel-log.php?vehicleid=5445]