Will standard AU3 XR8 ecu run a 347?

josh_hartman · 22-12-2008, 09:07 PM

as the title suggest will the ecu run a stroker motor. im considering stroking my 220kw engine

AU1XLS · 22-12-2008, 09:10 PM

Edit it Josh

philstoj · 22-12-2008, 09:12 PM

Yes it will run it but to optimise it you will need to tune it.

b2tf · 22-12-2008, 09:12 PM

Mine had enough trouble running a bigger cam, I wouldnt try it on a 347

josh_hartman · 22-12-2008, 09:14 PM

ok i would get an edit but im in a country town and there is no tuners around so it makes it a bit hard. just wanted to know if it would be safe or could even drive 400km

philstoj · 22-12-2008, 09:15 PM

The engine size upgrade wont affect it, its the cam depending on how big you go that the ECU will struggle to handle.

b2tf · 22-12-2008, 09:16 PM

Quote:

Originally Posted by josh_hartman

ok i would get an edit but im in a country town and there is no tuners around so it makes it a bit hard. just wanted to know if it would be safe or could even drive 400km

I drove mine unedited with the cam in it for 400km to Melbourne to be tuned and it was fine apart from being a pig on fuel

T3man · 22-12-2008, 09:16 PM

It will run it OK with an edit (flash tuner). Just remember the standard 220 settings may be very lean with the stroker motor so no full throttle load until you can get it to a tuner and have the edit box tuned. Drive it the absolute minimum distance possible until you can get it tuned.

RG · 22-12-2008, 09:31 PM

It will be very lean and idle like a cow, mine was near on undriveable with the factory settings.

**CAT600** · 22-12-2008, 10:15 PM

Everyone gives a different report on what will and wont run.

STROPP still has an AU XR8 pcm, (with the XR8 file) in his T3 TE50 after it crapped itself on the nullabor. It runs as strong as any of them and has given no sign of having issue.

Peeler has a centrifugal blower on his P250 with the standard T3 pcm file, and has run like that for longer than I have known him.

So it really does seem almost like pot luck, as I know what a heavily cammed 5.0L will run like unedited, but that is mostly base idle speed that makes it a pig.

The biggest thing is that the Maf and the injectors are matched to each other, and that the injectors are matched to the factory pcm tune.

Daniel

philstoj · 22-12-2008, 10:42 PM

Quote:

Originally Posted by CAT600

Everyone gives a different report on what will and wont run.

STROPP still has an AU XR8 pcm, (with the XR8 file) in his T3 TE50 after it crapped itself on the nullabor. It runs as strong as any of them and has given no sign of having issue.

Peeler has a centrifugal blower on his P250 with the standard T3 pcm file, and has run like that for longer than I have known him.

So it really does seem almost like pot luck, as I know what a heavily cammed 5.0L will run like unedited, but that is mostly base idle speed that makes it a pig.

The biggest thing is that the Maf and the injectors are matched to each other, and that the injectors are matched to the factory pcm tune.

Daniel

I agree mate, and it all depends on the specs of the motor to be built.

With an XR8 maf no way will it run lean, different if you run a 90mm ford racing maf...

**CAT600** · 22-12-2008, 10:47 PM

Quote:

Originally Posted by AU1XLS

Edit it Josh

And really when it comes down to it, the first reply is the only proper solution.

Daniel

EvilChief · 22-12-2008, 10:48 PM

u can always play with an adjustable FPR as a short term solution till u get it to a tuner

mickyyyy · 23-12-2008, 11:46 AM

Have the flash tune it especially if ur going to run a bigger cam. Plus is dosent cost much to do a flash tune epecially if your gona build a 347 stroker.