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I've just brought a new O2 sensor and will change it soon, will let you guys know if it has helped my wallet. Mods that I have are a 3" exhaust from turbo back, FMIC, pod filter (with CAI set up), runs at 10 psi. I've also changed my fuel filter recently and my plugs as well, and am using an injector cleaner regularly (Redline). I also have an Emanage but it isn't tuned yet (this factor won't be helping me any either).

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Does an atmo BOV make that much difference?

I've got an R33 S1

3 inch exhaust all the way to the turbo

pod filter

atmo BOV (pssshhhhttttt!!!).

Standard boost.

I dont know how much fuel i'm using yet, havent really had it long enough to take note.

But i can tell it's going thru a fair bit more than i thought it would.

When i hear that pod filter sucking air, i can feel my wallet emptying.

Is this normal?

City driving in 4th, doing about 60kph, sitting on around 2200rpm.

Does rpm seem a bit high?

I drive an R32 GTR on 12psi with 245rwkw.

City = 500kms

Hwy = 600kms

R32 has 60L tank.

Jason.

Why do i feel scepticle about those figures ??

I have a r33 gts-t with a pod, so i wouldn't be getting much more than 250hp at flywheel, I get 500 km

dun know nothin bout ur type of car what size motor u runnin? that is extremely bad fuel economy bro i'd b broke all the time!! 1 my mates got a bombed 355ci stroker powered commodore thats off its tits and it only averages around 18-19L/100km around town..

its the RB25DET NEO the same as the r34 gtt

fuel is killing me!

Just removed my old O2 sensor and am about to install the new one. When I took the old one off and shook it, it sounded like a set of maraccas! Definetely busted (and no I didn't shake it so much that it broke, it was like that when I took it off). The old O2 sensor was very easy to remove, I had no problems with the heat shield getting in the way because... I never had one! Either I never had one when I brought the car (4 years ago) or when I put the new exhaust on the installer never put it back on. Hmmmm... :P

This might be totaly wrong, but I used to Own a commodore, and I know when ever the battery got old in the thing, my fuel consuption would drop from about 500 km's to 350 km's out of a standard 60L tank, and when i saw this happening, I would replace the battery, and it would always bring the fuel consuption right again.

I have talked to a few mechanics, and they said, when a car's battry is starting to get old, it will not put as much powerinto the ECU and computer, and there for is not working at its peak. So you will always seem to use more fuel cos the computer is just pumping the fuel through and not shutting down when it is ment to. Or some crap like that.

All i know is it worked for the commodore, maybe someone can try it and let me know if it works with a skyline too.

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