Does anyone keeps track on how many miles each tank last?

I just added test pipes on my Turbo and it really improved performance and sound but MPG seems to be worsen a bit; I'm doing about 250 per tank.

I have re-seted the computer so it learns its new ways; in my experience in the past test pipes usually improved the MPG.

Anyone with test pipes?

 

I have test pipes, just for the 2nd cats though. 16-17 mpg. Primary cat pipes and exhaust coming soon. It should help gas mileage. If I can keep my foot out of the gas! lol

 

2009 Turbo S ... I get between 200-250 per tank... mostly depending on when I fill up as my driving habbits are pretty consistent lead-footed acceleration & speed.

 

2005, Turbo w/factory Powerkit, bypass pipes, 22's. 8-9 MPG primarily around town. Driven by my wife.

 

Oh man

I thought my Denali was bad at 12.

Like you my Wife has a heavy foot and is a 0-60 girl at every light. She burns through brakes and gas!!

 

11-17 city with a heavy foot / hwy @ 80 ish

 

2008 turbo

 

04 CTT chipped, BPVs, 22s, 17-19mpg all the time except when pinned to the floor.

 

I need to keep track, but I have a heavy foot problem. I'm afraid to do the math.

 

2004 turbo. About 270-300 miles per tank. Around 15.6 mpg. No mods.

 

I didn't see any appreciable gain/loss by adding the secondary cat deletes. The IPD plenum did increase mileage slightly - less than 1 mpg. But my driving is almost all city only and I get about 11-12mpg with the mods in the sig.

 

Best I got on my 08 Turbo is 16mpg over a 1200mile mostly highway stretch

 

I got about 21 mpg on a recent 650 mile trip I took to Telluride, that's over 400 miles on a tank. In the mountains too! Around town I get 16-17 at about 330-340 miles per tank. I drive my CTT normally with the occasional romp.

 

stock '06 TTS. 11-16 mpg mixed driving. 17mpg on a mellow (<75mph avg) two hour highway run. I've reached as high as 18+mpg but all highway driving.