Discuss 2006 V6 went dual,bad MPG! on AllFordMustangs.com, the place for Mustang enthusiasts.
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I recently installed a H dual conversion kit with GT takeoffs,soung great,looks better.......MPG not so happy!
What happend?On a full 93 octane tank and a street tune I use to get 360 miles,now I can get 310!
Plus,when I tune the car (SCT3) RACE from Bama the wheels use to spin A LOT....now I've noticed less low torque.......almost no spin!
Did I killed my performance avoiding backpressure?
as long as you keep the H pipe the same diameter as the factory exhaust you shouldn't have back pressure loss. Gt take offs are what im running, with divorced duals. i also have a bama 93 octane race tune on, and my fuel mileage is around 310 a tank or so, so you should be ok. you probably have just been getting on it more often, thus throwing out fuel mileage, once you get used to it, you'll even out probably..... my mileage got better with an intake, tune and exhaust, yours should too
2005 Ford Mustang Coupe 4.0 5 Speed: Daily Driver
1988 Ford Mustang GT 5.0 5 Speed: Winter Beater
1993 Ford Mustang LX 2.3 to 5.0 5 Speed Swap: SOLD
All highway driving. :P I drive at 70mph max(or 2000rpm) even if the speed limit is 75. I drive 3 hours round trip every day so I have to conserve gas as much as possible. Also regular maintenance and lightening my lead foot. :P
I have a X-Pipe and Duals with GT takeoff mufflers and run a 93 race Tune and get better gas mileage than when I ran the factory stock muffler and the stock tune with 87 Octane.....I Love it! Something's wrong.
2002 GT Premium Auto Mineral Grey. Pypes Violater Cat Back Exhaust.
2003 V6 Auto Oxford White, all original no Mods
SOLD 2007 V6 Premium Pony
FORD BUILT WITHOUT YOUR TAX DOLLARS
SAVE AMERICA STOP OBAMA!