Fuel Economy

[ktford]

Geez increased thirst coupled with the massive 65ltr tank, WOW great news, NOT

Scotty

p.s. My car showed 7.7 k's per litre when new, it dropped to 7.0 when I fitted the KnN filter with my 2nd air I take. All the extra power I make now hasn't changed in at all.

that's coz u drive like a girl

Hey Jar-a-rod, bite me sister

Scotty

[C.S.I]

Macka, I understand what you are saying, but the car is (should) already be running at its most efficent stock. As I stated earlier, it runs in closed loop mode with the O2 sensor. They should not run rich at cruise.

To get better milage I would think would require a more lean (read not so reliable ) A/F ratios??

Will wait for other input. Maybe then I'll have to take my foot out of my mouth

FYI, I have never ever ever seen anything like 7.x on my Avg Fuel Reading.

Try a 9.x when cruising at 90km/h for a couple of hours, and no stops in between.

Else try avg of 12 for 70/30 highway/suburbs driving, and that's nursing it on the highway

Stuff all diff pre and post edit

[C.S.I]

Street Tuner, any comment, your reading it

[ktford]

no no no,. Goosea, 7 litres per 100k's, which is about 14litres per 100k's

Scotty

[macka'sxr6t]

Macka, I understand what you are saying, but the car is (should) already be running at its most efficent stock.  As I stated earlier, it runs in closed loop mode with the O2 sensor.  They should not run rich at cruise.

To get better milage I would think would require a more lean (read not so reliable  ) A/F ratios??

<{POST_SNAPBACK}>

I thought that an A/F ratio of 11.8 approx was considered to be a optimum yet safe A/F ratio. I doubt very much that a standard T would be running anywhere near a A/F ratio like that

With the Edit you should be able to demand it I thought.

macka

[F6 RAPID]

Surely no-one here is serious - Scotty never is.

Buy a Prius if you care...........

[Street Tuner]

The PCM commands closed loop - aim mixture of 14.765:1 air fuel ratio inside its pre-determined operating range. Say up to 75kpa vac and 4500rpm. A piggyback cannot change this. It doesnt matter what piggyback changes you make the factory PCM always controls the mixture back to 14.765:1. It does this by using both short and long term trim strategies in the software - STFT and LTFT up to +/- 25% fuel. If you try and pull it outside this range by bending the signals, it will throw a fault code and revert to open loop (extremely thirsty) operation.

While the window for closed loop control can be changed in dealer level CAPA software, the aim air fuel ratio of 14:1 cannot be. Personally I haven't seen a case where the dealer in question has changed this window, and neither should there be a need. There is a possiblity though that the injector calibration settings for the larger injectors in your software may not be totally correct, which can skew the operation in open loop.

It still concerns me Macka when I hear you make sweeping statements about a product and its operation when you don't fully understand how and why it works. Like 330rwkw out of a stock fuel system, I find your claim of 9.5l/100km for a modified T to be sensational to say the least. In a combined urban/highway drive cycle as dictated by the relevant test standard this figure is almost physically impossible without severly affecting the emissions and performance (both in a negative way) of the vehicle.

Remember a CAPA Flasher will deliver the air fuel ratios, hence economy, that is programmed into it by the tuner. It is a tuning tool.

Edited 17/04/05 10:44 AM by Street Tuner

[macka'sxr6t]

Surely no-one here is serious - Scotty never is.

Buy a Prius if you care...........

<{POST_SNAPBACK}>

Very serious I've had more power and economy than a standard T before. I would like to think that the Edit could provide the same. And was after input from the members who have had Edit.

Johnny Howard already gets enough tax without filling his greedy pockets with extra fuel excise.

macka

[macka'sxr6t]

It still concerns me Macka when I hear you make sweeping statements about a product and its operation when you don't fully understand how and why it works. Like 330rwkw out of a stock fuel system, I find your claim of 9.5l/100km for a modified T to be sensational to say the least. In a combined urban/highway drive cycle as dictated by the relevant test standard this figure is almost physically impossible without severly affecting the emissions and performance (both in a negative way) of the vehicle.

<{POST_SNAPBACK}>

It concerns me more that the only time you reply in any of my posts it is to attack me.

I have never stated in any post that a stock fuel system can deliver 330 rwkw. As far as the 9.5l/100km claim goes. You have never filled my car up or been on a cruise in it, so I don't really care what you think. I have plenty of witness from this forum who have seen it during cruises.

As far as the sweeping statements, where are they. I have only posted what and how I understand the product to work. If I am wrong enlighten both me and the members instead of attacks.

If now body asks questions about the product how are we supposed to find out. You certainly don't offer much technical enhancement to this forum.

macka

[macka'sxr6t]

I find your claim of 9.5l/100km for a modified T to be sensational to say the least. In a combined urban/highway drive cycle as dictated by the relevant test standard this figure is almost physically impossible without severly affecting the emissions and performance (both in a negative way) of the vehicle.

<{POST_SNAPBACK}>

Now that my car is back in it's standard trim, I'll be able to directly compare it from what I was achieving before with a piggyback, to now stock, and in the future with the Edit.

results will be interesting IMOP

macka