Rusty1

The 1zf-fe engine is terrific, especially compared to the old 4.2.  They're not bad on the highways but the moment you hit town though, it drinks!  It comes down to it being a heavy vehicle, especially if you've got the auto.  Your obviously changing filters and keeping it in good tune, the only other suggestion I can make is to switch to a K&N air filter, alot of 4wd's get good results switching to one of these.  Together with the extractors this should give you an improvement Rusty.

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the K&N filter is about all I havent done. I did a lot of research on google over the weekend and i keep coming up with the same outcome, and that is that they are heavy on fuel and there is nothing that can be done about it.

Thanks heaps anyway.

I have a 1996 Landcruiser with a 1FZ-FE 4.5 litre DOHC enging, the problem that I am having is that it is severley heavy on fuel. I do alot of towing, nothing big, and am getting 23L/100Kms. OUCH I am going broke, it gets over serviced, full filter change every 5000kms. just put full new exhaust system on with extractors, due to a collapsed CAT converter, I have 2 hyclones in it, new plugs, leads, cleaned the airflow meter and throttle body. ???????

I am out of ideas please help.

I have a 1996 Landcruiser with a 1FZ-FE 4.5 litre DOHC enging, the problem that I am having is that it is severley heavy on fuel. I do alot of towing, nothing big, and am getting 23L/100Kms. OUCH I am going broke, it gets over serviced, full filter change every 5000kms. just put full new exhaust system on with extractors, due to a collapsed CAT converter, I have 2 hyclones in it, new plugs, leads, cleaned the airflow meter and throttle body. ???????

I am out of ideas please help.