Yaz Posted March 25, 2009 Share Posted March 25, 2009 a friend was saying by changing out my stock intake and exhaust i can up my fuel efficiency, any truth to this? and if so any suggestions? Link to comment Share on other sites More sharing options...
rtbrjason Posted March 25, 2009 Share Posted March 25, 2009 In some vehicles this is true.. Not sure the LGT is a good example though. You would spend years trying to recoup the cost of the intake and exhaust in added mpg. Link to comment Share on other sites More sharing options...
c-lo Posted March 25, 2009 Share Posted March 25, 2009 what's your current MPG? 258k miles - Stock engine/minor suspension upgrades/original shocks/rear struts replaced at 222k/4 passenger side wheel bearings/3 clutches/1 radiator/3 turbos Link to comment Share on other sites More sharing options...
Merc6 Posted March 25, 2009 Share Posted March 25, 2009 I showed 2 mpg difrence from blitz to aem. Both were tuned to car when did the swaps. 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
mikeislord Posted March 25, 2009 Share Posted March 25, 2009 You can't just drop in a new intake/exhaust in our cars. It would need to be tuned in order to run properly with those parts. You could gain a couple mpg with just a Stage 1 tune. But don't expect more than 2 or 3 mpg. Link to comment Share on other sites More sharing options...
Merc6 Posted March 25, 2009 Share Posted March 25, 2009 Once you tune it you could see improvements. Then again the new noises from behind the glovebox can cause it to rapidly drop as well. 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
praedet Posted March 25, 2009 Share Posted March 25, 2009 Even with no tune on exhaust mods, you could see an improvement. There is a chance you will see an improvement w/ the intake also w/ no tune, but if you do, it will be because you are running lean. Which means your engine could go boom Overall, anything that gives the engine more power (other than a turbo) is actually making it more efficient. So drven EXACTLY the same way, mpgs will go up. The difference w/ the turbo is that the size effects how often the car is in boost. The more you are in boost, the more fuel you use Link to comment Share on other sites More sharing options...
Yaz Posted March 26, 2009 Author Share Posted March 26, 2009 thanks for the help guys, gives me some stuff to think about... i'm avg 17 - 18mpg but all of my driving is city so I expected it to be a little low. Link to comment Share on other sites More sharing options...
Merc6 Posted March 26, 2009 Share Posted March 26, 2009 thanks for the help guys, gives me some stuff to think about... i'm avg 17 - 18mpg but all of my driving is city so I expected it to be a little low. Better than me. I barely see the freeway unless i'm to or from jersey. 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
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