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| 08-08-2018, 11:07 AM | #1 |
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M Master
74
Rep 551
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I posted this on the X6M side but I figured this will also apply to the X5M section.. so here ya go!
When I got my X6m, I avg'd 15 mpg at 70mph and around 10-12 city.. Im now happy to report I have raised it to 16-17 city and 25 mpg at 80mph highway.. Crazy you may say, insanity you may yell, lies you may scream.. but I assure you its not.. and id be happy to provide video proof of it... Heres how I accomplished this.. Some of these mods May or May not attribute to this, but ive listed them anyways.. 1. ESS tune (Although I dont think the tune/stock would make a difference I do feel my ESS tune is more efficient) 2. Custom Highflow intake.. I have a thread on my setup elsewhere but I believe this greatly increased air flow into the engine 3. Downpipes to Supersprint Mid-section w X pipe to Megan Mufflers.. I dont run cats or resonators. My car is Quieter than Stock around town and is only loud when on full throttle.. The X pipe system from Supersprint (also Akropovic) is Highly efficient at increasing exhaust velocity while neutralizing exhaust pulses which makes the exhaust very quiet.. a sign of true efficiency 4. Heat wrapped Downpipes for more velocity flow and a Turbo blanket from PTP under the heat shields for more Turbo efficiency effective boost 5. Aftermarket diffuser with fins and a deck spoiler.. they work well to smoothen air flow around the car and remove turbulence... working Aero kits are very effective.. I make around 650hp and run 25 Mpg at 80mph...I believe the combination of heat and velocity management, a good tune, proper aero, increased intake and exhaust flow all add up to the 16/25 mpg I get.. its a Massive improvement from what I ran as OEM and im happy to provide proof for anyone who doubts this is achievable.. all on a 6 speed auto box... not bad.. **When I install my forged wheels and lose 80lbs of unsprung weight = to 480 lbs removed from the trunk, Im aiming for 27 mpg*** Cheers! |
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