How many litres per 100 on a 1J

[beatle]

i got about 11-12L/100km on a trip down south recently but i average around 15-17L/100km normaly
thats an auto jza70

[jak]

if you mainly do highway km's, you would benefit from putting a switch in for the lock up clutch.

that, + overdrive, we were sitting on 130 on gwh at 2700rpm on the way back from jenolan caves.

Jak

[Draven]

I'm sure you mean 110, which is the speed limit

maybe my 2gay is not as bad on the fuel as I thought it was.

[TheStitt]

jak who does these switches

[jak]

sideshow does them.

but any auto elec should be able to put one in, u just have to supply current to a wire goin to the g'box or sumthin. its pretty simple.

Jak

[BabyZ]

you would benefit from putting a switch in for the lock up clutch

What does this switch do? Doesn't the ECU lock the converter when the revs/load are correct anyway?

No doubt there is some purpose, or people wouldn't bother ...

My 1JZ MX83 gets pretty woeful fuel consumption too. (I did calculate it, but I think I threw the figures away in disgust). I'm about to do the ECU capacitor replacement trick (which might help) but probably a check of the O2 sensor may be in order as well. (As would a lighter right foot )

[EldarO]

$90 of fuel @ ~145c gets me about 300k's.

[jak]

its better to have it on a switch so u can use it more often than the computer does.

o/d drops bout 1.5k revs, then hit lock up clutcch and it drops another 1k.

the switch just supplies 12v to two wires which in turn locks up the converter.

Jak

[cambelt]

Great to see a Honest thread about fuel consumption , And the Fact that most turbo 6,s are not that great on fuel around town.
My 2JZ-GTE gets 10.4 on the freeway and about 15 around town , And thats with nicely cleaned up head ports and matching manifolds.
Dave

[BigWorm]

What would be good to see is some figures from people with aftermarket ECUs.
With a good tune & respectable A/F ratios I would expect much better figures for both city & highway driving.

[cambelt]

From my experience you dont anything for nothing , most factory ecu,s will trim as lean as they can on the highway ,Ive tried to lean off a few ecu,s but mostly end up with rough running problems.
Id guess the only gain you would have with a aftermarket ecu is around town when a factory ecu fuels up a bit rich to stop melting things ( this is turbo of course).
Dave

[pete05]

[QUOTE=cambelt1]From my experience you dont anything for nothing , most factory ecu,s will trim as lean as they can on the highway ,Ive tried to lean off a few ecu,s but mostly end up with rough running problems.

I noticed this rough running when i fitted my first fcd, now i tuned the fuel cut out through my boost controller and its much nicer to drive. The 1j ecu dont like the way the cheap fcds lean them out.

[jak]

it depends, coz if u have an after market ecu, u are probably chasing higher power figures than the average 1j. which would then cost more to run.

in the trip back hme fro jeolan, id say ours gets about 3km/l around town and 5km/l highway driving.

Jak

[JZA70 R]

70L will net me on average 550 kilometers. but thats to dead empty none of this fuel light warning crap

thats 1660 KG incl driver
suburban/city driving 50/50 highway/fwy & suburban driving
320 odd hp
manual.

[jak]

thats awsome.

u must have a great tune to be getting that with thos power figures.

Jak