ART Pipes causing bad gas mileage?!
#1
ART Pipes causing bad gas mileage?!
Hi guys I recently installed a set of motordyne ART pipes for my 03 G35 Coupe. And I definitely noticed the gains. And I love it! However my gas mileage has went down a lot! From 18-19mpg to 11.8mpg. Is this normal? I know adding more power means more gas, but is it supposed to be that much? I'm driving my car normally too. Not going red line or juicing it. My existing mods are. Injen CAI, 5/16 motordyne plenum spacer and Skunk2 true duals. Anyone else run into this problem? Do I need to reflash my ecu, get a return or anything like that. Any help would be great thanks in advance.
Last edited by 350GT_ninja; 06-14-2012 at 12:22 AM.
#4
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G35 sedan w/ too much money in mods
#5
#6
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Quality gaskets are a must on our exhaust systems
One thing that can cause the decline of your gas mileage is you're listening to the sound of your exhaust. Sure, the ECU reset will help and I'm surprised running ART Pipes you don't have SES error code from running lean. If you can get an Osiris tune, that's one way to gain lots of RWHP. Ear plugs and a tune will help your gas mileage....Gary
Last edited by gary c; 06-16-2012 at 11:21 AM.
#7
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#8
I never had any problems with the exhaust, plenum and intake when I put them on, well initially I had problems with the intake but the problem went away after a few days. The ART's I dunno yet, but I'll play around with it this weekend and see what happens. A tune isn't really necessary. It's only necessary if you want to bring out the full potential of your bolt ons or in my case if its running to rich/lean.
#9
#10
How did you know this? Did you get pinging or any other weird noises? I really want to put these bolt-ons on right now (sitting in my garage) but I don't want to have to get a tune (if I would be running lean enough to do damage to my car over time, car only has 30K miles on it currently and I want to keep it for awhile).
#11
How did you know this? Did you get pinging or any other weird noises? I really want to put these bolt-ons on right now (sitting in my garage) but I don't want to have to get a tune (if I would be running lean enough to do damage to my car over time, car only has 30K miles on it currently and I want to keep it for awhile).
#12
I tightened some exhaust bolts a few weeks ago, it didn't do much. But the bad gas mileage problem seems to have went away now. I think the ECU just needed some time to do some relearning. I'll see if I can find someone who can tune the car here in Calgary, to see if I can squeeze a little bit more power from the mods.
#13