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gas mileage after cam install

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Old Apr 25, 2008 | 03:29 PM
  #21  
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how do you test to see if the o2 sensors are bad? any easy way of doing that?
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Old Apr 25, 2008 | 04:01 PM
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Originally Posted by DPG
how do you test to see if the o2 sensors are bad? any easy way of doing that?
I am pretty sure it will throw a code on the DIC...same thing if the Maf was fckd up..it would through a code.

Anyone else???

Last edited by FrankTank; Apr 25, 2008 at 04:05 PM.
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Old Apr 25, 2008 | 04:30 PM
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Originally Posted by ccajun4real
AFR 205, Comp XER 228/230 went from 31 MPG to 28 MPG on the highway, not sure but pretty sure the city MPG went down 2-3 MPG.

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31 Hwy MPG with AFR Heads and 214/224 cam
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Old Apr 25, 2008 | 04:53 PM
  #24  
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I have a TSP 224/224 581/581 and my mpg stalled about the same.
26 to 28 highway.
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Old Apr 28, 2008 | 11:22 AM
  #25  
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Originally Posted by FrankTank
I am pretty sure it will throw a code on the DIC...same thing if the Maf was fckd up..it would through a code.

Anyone else???
Only if the codes weren't turned off. Some tuners turn off the DIC light AND the codes. Datalogging is the best way to confirm.
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Old Apr 28, 2008 | 12:25 PM
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29.8 mpg highway after ported and milled 243 heads (62cc comb chamber) and MTI Stealth cam with LS6 intake. Very drivable.
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Old Apr 28, 2008 | 05:17 PM
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failing o2s wont always throw the light
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Old Apr 28, 2008 | 09:37 PM
  #28  
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search my name for a recent thread of mine.
i got over 26 mpg with whats in my sig and 3:90s
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2001 a4 2.73 intake, headers, mid pipes. Recent 200 mile trip yielded 25going 28 coming back. I drove at 79 mph with cruise control. I think the difference was head and tail winds. This mileage is based on the DIC reading not actual calculation. Using the DIC instant mileage readout it is interesting how a bit or acceleration or incline effects consumption. Will be changing to a 3.15 shortly in spite of the gas prices. I'll also start paying attention to more organized trips to kill two birds with one stone to help in offsetting higher gas prices and reduced mileage. 65mph will usually yield close to 30mph.

Originally Posted by ezrider4u2
I changed from the 2.73 to 3:42s, 2900 stall, new tranny, Trickflows 215s and a Comp Cam 232/238 114 LSA plus a host of other crap and mileage went from 30-31 on the hwy to 25-28 mpg dependent on hills and stuff. City driving- varies really I range anywhere between 15-18 mpg in the city. At soon to be $4.00 a gallon, I figured I will start selling plasma + sperm and possibly a kidney to keep my baby rolling.

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