Fordmods Logo

I have AU VCT in EF, go with EF Xr6 ECU? 

 

Page 1 of 1 [ 13 posts ] 

 
 Post subject: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Thu Nov 08, 2012 11:03 pm 
Stock as a Rock
Offline
User avatar

Age: 79

Posts: 179

Joined: 11th Sep 2010

Location: Mount Martha
VIC, Australia

Hi chaps, I have put an Au VCT engine in my EF. I got a 98 octane tuned J3 chip for it & it goes like the clappers, but i'm not happy as it has much higher fuel use and it idles fairly lumpy-it just isn't spot on. With the standard ECU it idles smooth as silk, runs nice, easy on fuel and really doesn't have that much less performance, all I do is cruze anyway. Since the factory tune seems nice I was thinking just going for an EF XR6 ECU, what do you guys reckon? I'm concerned that I still have the 3.08 diff and this will mess with it brain as it's set up for 3.45 gears. or maybe I could get one of these http://www.ebay.com.au/itm/BPRacing-J3- ... 53eb4e71ab

What do you guys reckon i should do?

 

_________________

she dream't she was a bulldozer, she dream't she was alone in a field

Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Fri Nov 09, 2012 6:38 am 
Tyre Shredder
Offline

Posts: 333

Joined: 20th Apr 2011

Ride: 1991 eb1 fairmont

Location: townsville
QLD, Australia

is the vct operational? if not then that would be the first priority as it controls the cam timing.
Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Fri Nov 09, 2012 8:18 am 
Stock as a Rock
Offline
User avatar

Age: 79

Posts: 179

Joined: 11th Sep 2010

Location: Mount Martha
VIC, Australia

VCT operates, but ECU doesn't control it. It has a J-car frequency switch set to 3000rpm.

 

_________________

she dream't she was a bulldozer, she dream't she was alone in a field

Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Fri Nov 09, 2012 9:15 am 
Getting Side Ways
Offline

Posts: 2091

Joined: 3rd Apr 2008

Ride: EF Fairmont, XG Ute

How bad is the fuel?

My VCT has always used heaps, I think its just how they are.

On a run to Melbourne got down in the 8s, but in normal driving never better than 14/100 over a tank. And I live semi Rural.

Has the J3 been done on a dyno?
Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Fri Nov 09, 2012 1:55 pm 
Stock as a Rock
Offline
User avatar

Age: 79

Posts: 179

Joined: 11th Sep 2010

Location: Mount Martha
VIC, Australia

SLO247 wrote:
How bad is the fuel?

My VCT has always used heaps, I think its just how they are.

On a run to Melbourne got down in the 8s, but in normal driving never better than 14/100 over a tank. And I live semi Rural.

Has the J3 been done on a dyno?


Mine uses abot 13.9 with the j3 and 10l with standerd ecu, with a mix of stop start & cruze. It runs really well. It hasn't been on a dyno, it was a pre-tuned post out job.

 

_________________

she dream't she was a bulldozer, she dream't she was alone in a field

Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Fri Nov 09, 2012 2:40 pm 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

unfortunatly the vct engines are a little thursty compared to there std brother.. my au ghia uses 9.5 ltrs per 100 on the freeway and around 14ltrs 100 city..
Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Sat Nov 10, 2012 10:44 am 
Stock as a Rock
Offline
User avatar

Age: 79

Posts: 179

Joined: 11th Sep 2010

Location: Mount Martha
VIC, Australia

What do you guys think about running an EF Xr6 ecu? Would it be suitable with the diff gears I have? I realise it might only give a very small bit of xtra performance, but might be worth it?

 

_________________

she dream't she was a bulldozer, she dream't she was alone in a field

Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Sat Nov 10, 2012 11:30 am 
Tyre Shredder
Offline

Posts: 333

Joined: 20th Apr 2011

Ride: 1991 eb1 fairmont

Location: townsville
QLD, Australia

personally i would be investigating the use of an au vct xr6 ecu.
Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Sat Nov 10, 2012 1:30 pm 
Technical Contributor
Offline

Age: 60

Posts: 6817

Joined: 22nd Jun 2005

Gallery: 8 images

Ride: EF Fairmont

Location: Campbelltown
NSW, Australia

AU ECU won't work in an EF.
Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Sat Dec 01, 2012 6:56 am 
Tyre Shredder
Offline

Age: 55

Posts: 373

Joined: 9th Feb 2006

Ride: AU Wagon

Location: Newcastle
NSW, Australia

SWC wrote:
AU ECU won't work in an EF.


Why not?

 

_________________

AU1.5 Wagon, Raptor ProStreet kit, Pacemaker 4499's with 3" collector, 3" metal cat, 3" pipe, Pex BSO660 & BSO439, BA brakes, Sprintgas mixer LPG system, Airod variable-venturi mixer... stealth FTW Sniper tuned!

To be updated... soon!

Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Sat Dec 01, 2012 7:35 am 
Technical Contributor
Offline

Age: 60

Posts: 6817

Joined: 22nd Jun 2005

Gallery: 8 images

Ride: EF Fairmont

Location: Campbelltown
NSW, Australia

Totally different ECU to the EF.

You can operate the the VCT but using a rev switch but is it worth all the hassle. Most people disconnect the VCT and run aftermarket cam and vernier, better results.
Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Sat Dec 01, 2012 8:31 am 
Tyre Shredder
Offline

Age: 55

Posts: 373

Joined: 9th Feb 2006

Ride: AU Wagon

Location: Newcastle
NSW, Australia

As he already has the AU VCT engine in the car, if he uses the AU engine to ECU loom, makes any wiring mods that are needed between the ECU and BEM, and either disables PATS or uses an early AU Smartlock ECU rather than a later Smartshield one, it should work a treat. It just isn't as simple as "it won't work because it's different".

Whether it's worth doing or if there's an easier solution, that's a different question. As the AU engine runs with his current setup, probably the best answer is to put the time and $ into tuning it on a dyno to get the full benefit of the J3 rather than stuffing around with hardware. A good tuner will be able to give him a tune that's economical when pootling around, but kicks a*** when it's hammer time.

 

_________________

AU1.5 Wagon, Raptor ProStreet kit, Pacemaker 4499's with 3" collector, 3" metal cat, 3" pipe, Pex BSO660 & BSO439, BA brakes, Sprintgas mixer LPG system, Airod variable-venturi mixer... stealth FTW Sniper tuned!

To be updated... soon!

Top
 Profile  
 
 
 Post subject: Re: I have AU VCT in EF, go with EF Xr6 ECU?
Posted: Sat Feb 02, 2013 6:01 pm 
Getting Side Ways
Offline

Age: 50

Posts: 912

Joined: 22nd Mar 2005

Gallery: 1 images

Location: FNQ
QLD, Australia

I've run EF XR6 ECU in my GLi (3.08 diff) - and had no dramas with the diff mismatch - in fact gear shifting in "Normal" mode is bloody marvelous for town driving - it behaves somewhere between stock ecu normal mode and economy mode - which is a better match to the engine than normal mode in the original ECU. In Economy mode tho it does tend to change up a tad quickly and can be reluctant to kick down.

Only other issue I have with the Xr6 ecu is that the torque converter doesn't seem to lock up properly at highway speed - I think it might be programmed that way tho because my eldest son has same issue with his stock AU3 XR6 - drives him nuts that he has to really pedal quite hard on hilly roads at high speed because the box isn't locked - ie. no such thing as just lettin it lug - instead the speed will fall off so extra pedal is needed to the point where it'll often kick down.

 

_________________

96 EF Auto GLi - Bilstein Shocks - Adjustable Front sway bar - JMM Cam - TI Perf J3 - TCI 2500/3000 stall converter. 2015 Jeep Cherokee Trailhawk.

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 13 posts ] 

Who is online

Users browsing this forum: Google Adsense [Bot] and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Tue Dec 12, 2017 12:41 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names