Hey all!

Im suffering with the price of fuel as we all are and want to save a bit. At the moment Ive got a TP1990 wagon with 75 000 on the clock, extractors, 2.5"zorst, and the carby off what I thought was an XF but now Ive seen photos of one Im not too sure what its off, but its big...I'll put up a pic soon....but neways, it uses too much fuel. It has more power than the standard engine...which is something I dont want to lose.
I was thinking of getting EFI from a wreckers and a new computer and injectors. I would appreciate any input as to what parts (engine management systems, injectors, fuel pumps...) would save fuel but give comparable power (or more:P ). Also any tips on what to look out for in the way of secondhand EFI systems and what is involved in installation.

I love my magna and dont want to sell it just because it uses too much fuel. I wouldnt mind spending up to 1800 on parts.

Thanx in advance!

Hi mazzaz, good to see youre still about. I know your pain, its costing me about $80 a week in petrol at the moment. Ive even considered getting LPG. Its probably worse for you with that massive carbie youve got :P

Im not sure if yould actually get that much better fuel economy out of an EFI system, perhaps 1-2L/100. Maybe you should look at getting the EFI system off a second gen astron, from memory you already have a second head (M8...).

1-2L will go a fair bit for every 100km, it all adds up :-)

Yeah I would have to get a second gen EFI. 2L less per 100km sounds pretty good to me. At the moment im getting 14.6L to 100km...maybe I should get a 3rd gen V6 and have more power and save fuel....my m8s sellin his TL soon with 127 000...but its auto...

Anyways, does anyone know a rough EFI L/100km figure?

$1800 on efi, ecu and injectors V's $1800 on gas conversion, i know what id do then u can have the best of both worlds at the flick of a switch. efi with mods driven light = 10L per 100k's

Whats involved in a gas conversion? Does anyone know the price of gas in Tas, 75c?

well i havent had one done but far as i know its an extra tank in the boot, pipes gas reglator under the bonnet and some adaptor thing on the carb, i missed a 2nd hand magna with gas for $200 good auto need a muffler reg and tank to be tested would have been great to run to work i hate clockin kms on my TP on the way to work, you will use more ltrs of gas than fuel to travel the same distance but your fill cost will be less, anyone with gas share to shed more light?

I get 16L/100km, I'd be happy with 14L/100km.

guess i shouldnt complain at 10/100 then

i was speaking to a taxi driver and he runs his 2003 ford falcon on gas (like all taxis) and he reckons he gets more kms off gas than petrol

Gas is around 60c/L in tassie at the moment.
At 14.6L/100km going back to the stock carbie is probably an option too lol

Yeah I would have to get a second gen EFI. 2L less per 100km sounds pretty good to me. At the moment im getting 14.6L to 100km...maybe I should get a 3rd gen V6 and have more power and save fuel....my m8s sellin his TL soon with 127 000...but its auto...

Anyways, does anyone know a rough EFI L/100km figure?
just because you have a 2nd gen head doesnt mean you have to get a gen2 efi setup
if any thing i would go for the gen1 setup as gen1 efi parts are alot easyer to come by, if you go to a local pull a part wrecker $500 max for the whole set up i wouldnt be paying any more



I get 16L/100km, I'd be happy with 14L/100km.
ermm i think your car needs looking at thats even too much for a carby :doubt:

Heh, thing is, it's not even running rich or anything. It only does 16L/100km because I plant my foot to the floor every time. It's just driven by a dickhead ;-)

i was speaking to a taxi driver and he runs his 2003 ford falcon on gas (like all taxis) and he reckons he gets more kms off gas than petrol
Generally fuel consumption on gas rises by upto 30%, that is normally why a Falcon has a 70 litre fuel tank and a 90 litre gas tank.

As for having a 2nd gen EFI on a 2nd gen head - it makes no difference. The 2nd gen has roller rockers and slightly different combustion chambers for more compression. 1st gen EFI will work on it (and doesnt have ISC units that die all the time).

As for EFI Conversions - I think I wrote a little about it before, the basics are:
PARTS
1. Engine wiring (on TPs unplugs on the passenger side under the dash)
2. EFI Plant/Injectors/Distributor/AFM/Coil
3. Block off of charcoal canistor on EFI
4. ECU
5. Fuel Pump
6. Exhaust from manifold to flange just forward of the rear muffler
7. Fuel lines (can do this a little different by cutting the screw ends off the piping in the EFI car and using rubber hose and clamps to attach it)

Basically you need to pull the dash and heater blower out, unplug the wiring , push it through the firewall and install the new wiring.

Heh, thing is, it's not even running rich or anything. It only does 16L/100km because I plant my foot to the floor every time. It's just driven by a dickhead ;-)

Three letters..... E F I

I drive the Elante hard and my fuel consumption goes down. Poking around I get around 13L/100Km, which is still better than your 16!

Yeah luckily I don't have to pay for petrol hey :-)

this weekend gone i did 670km off 55L and still had about 8L left in the can.. is that good
btw i was on the highway alot of it

1st gen EFI will work on it (and doesnt have ISC units that die all the time).


:redface: im confused do u mean the gen1s dont have the isc units that fail or the gen2s??


Heh, thing is, it's not even running rich or anything. It only does 16L/100km because I plant my foot to the floor every time. It's just driven by a dickhead ;-)
when was the last time you had a service like all the spark plugs, filters cos i found after i did a major service to my car my econ went from 12-13 down to 10-11

when was the last time you had a service like all the spark plugs, filters cos i found after i did a major service to my car my econ went from 12-13 down to 10-11


Last major service was done 3000km ago, the car is fine in itself, running probably better than it did when the car was originally released in 1990. It's just that I really do treat the car as if it was built for drag racing, and what not.

this weekend gone i did 670km off 55L and still had about 8L left in the can.. is that good
btw i was on the highway alot of it

Yeah that sounds pretty good to me, I'm guessing it's EFI? Doubt you'd be able to do that on a carburettor. Prove me wrong someone.

Last major service was done 3000km ago, the car is fine in itself, running probably better than it did when the car was originally released in 1990. It's just that I really do treat the car as if it was built for drag racing, and what not.
hmm fair enough but even i give mine stick but have average fuel econ ahh well

Yeah that sounds pretty good to me, I'm guessing it's EFI? Doubt you'd be able to do that on a carburettor. Prove me wrong someone.

670km from a full tank (most of that was highway driving)

this weekend gone i did 670km off 55L and still had about 8L left in the can.. is that good
btw i was on the highway alot of it

In my old TP I used to get from Bathurst to Grafton (800Km) on under a tank.

On my TP wagon, I frequently saw 630+ km, with reserve. I've also done 722km, and managed to fit 76 litres in...

(As in, this tank was EMPTY!)

:redface: im confused do u mean the gen1s dont have the isc units that fail or the gen2s??

Both have ISCs, just that Gen1s have one that doesnt die all the time (probably because of the way it works).

My 86 TM is dual fuel (LPG) grandad did it in 1998 when it wasnt as expensive.... along with the sunroof!
it goes really well on the highway, i only notice a difference when in town, abit slower accel...

I used to get around 500km for 65 lt of LPG....$0.60 x 65 = $39 to fill / 500km = $0.07 per km OR 13lt LPG per km

but now i get 380 km a tank, blown head gasket, holy as exhaust, kinked intake pipe, and stuff...

It wont run on ULP anymore cos the carbie has siezed up a bit and the seals are brittle and and sorts o crap.

so im gonna spend money to fix it and keep the ol cruise missile going, cos once it does it really flies on the way to Launceston or Devport....

I'd be thrilled with 380km on $39...that's great, as opposed to my 400km on $70.

I am also doing a Carb to EFI convertion, is it really true you can just hose clamp the fuel lines on the EFI? Don't you risk having the hoses blow off due to the high pressure. Something like 220 KPA?