4L ECM's running a 4.6

[Pedro_The_Swift]

After a LOT of er, crap, :angel: I have a 4.6 with a 4.6 fuel map, with a 4.6 MAF, with a 4.6 inlet.
After seeing the LTFT's maxed out at +25 while using the 4L ECM it was a huge comfort to see them both come down to low NEGATIVE single figures,,


So, if you have built a 4.6 Thor, and are using a 4L ECM I have some news for you,,,

[ozscott]

Good Pedro. Nice. On the run to Toowoomba today I had my typical long term trims... Both very low single digits... 4 litre ECU still. Not sure what was going on with yours. Cheers

[Pedro_The_Swift]

Be interesting to swap ECMs-- :confused:
my last two sat at 25+
even the Dyno guy said its impossible for a 4L fuel map to run a 4.6 properly,,
and he's an EVO guy :D

[ozscott]

I don't doubt you. I might be lucky. I will get the passenger to take a photo of the trim screen. I couldn't get such good fuel economy unless the fuel trim was sound. Likewise it runs cool which suggests mixture is good. No pinging at all unless not up to temp. Cheers

[ozscott]

OK from today.113717113718

What figures is yours running now Pedro?

Cheers

[Pedro_The_Swift]

around those funnily enough,, :p
both negative too,, which I suppose makes sense, if the maps making more power it must be adding fuel, which makes it richer hence the negs,,,
maybe a coughdynoruncough soon,,
just to fix my LPG problem though-- :angel::whistling:

[ozscott]

Mate it's odd. I think I will just leave the stock ECU and stock intake. I would need to send my ECU over to Mark because it's a manual. My spare is an auto. I think my economy, grunt and fuel trims mean I have got lucky (or the ECU is better able to cope with the bigger motor than people think. I Don't know).

Cheers

[discorevy]

Just as a comparison, one of the jobs I'm doing is rebuilding a 4.6 and fitting it to a 86 rrc along with diff lockers and a couple of other goodies , I'll be using the supplied old school wolf 3d programmable injection , should be done in a month or so ( has anyone used this combination) will ask the owner to let me know fuel consumption figures after run in and pass them on

[Pedro_The_Swift]

The last engine I spent this much on had no electronics, ran twin 45's and paid no heed whatsoever to the ozone layer,, :cool:
theres an argument to be made about whether fuel efficiency or HP is a better way to judge how well an engine runs,,


I'm sure we all drive around people every day that think the go pedal has a bear trap on it,, that actually moving off after the light has turned green is against some regulation, oh, and my favourite,, putting their foot on the brake, travelling in a straight line, in a 100 kph zone, with no-one but me within 100 miles,,,,


and they all seem to have TD5 badges on the back:angel::wasntme:

[incisor]

and they all seem to have TD5 badges on the back:angel::wasntme:

[bigsmile][bigsmile][bigsmile]