In town to/from work 9 miles one-way stop & go max speed 45mph pre-GDE 18.5 mpg average/post-GDE 22.5 mpg average - highway generally a steady 62 mph at 1,800 rpm pre-GDE 27 mpg/post-GDE (2,000+ miles - Tally to Baltimore and back with some in DC and a tstat failing open on last tank both of which likely cut average by 0.5-1 mpg) 32mpg. Essentially a 20% improvement in mpg so at 10,000 miles per year you are looking at 2 year payback cycle or less. That doesn't count 1) minimial future EGR worries; 2) MAP sensor stays clean; and 3) under full throttle acceleration you don't look like you are fogging for mosquitos. I'd go on but you get the picture in one person's opinion.
Oh by the way if you have to go with the new 5v metal glow plugs in the future be ready to shell out $s to the dealer (I've heard tell of $200) for an ECU flash that GDE can cover in their flash or do later for $50.
_________________ Sold to LOST member my 05 Ltd, GDE Stg II turbo + TCM tune, SunCoast TC w. Transgo kit, Steiger window regulators, Samcos, Fumoto valve, 2nd gen filter head with Lub. Spec. bleeder, Hayden clutch & 11 blade fan, inverted spare, P-1 battery, BF Goodrich Long Trail TAs, Etecno1 glow plugs, timing belt at 50K miles/8 yrs
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