|
|
|
|
|
|
Welcome to the Australian Ford Forums forum. You are currently viewing our boards as a guest which gives you limited access to view most discussions and inserts advertising. By joining our free community you will have access to post topics, communicate privately with other members, respond to polls, upload content and access many other special features without post based advertising banners. Registration is simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact us. Please Note: All new registrations go through a manual approval queue to keep spammers out. This is checked twice each day so there will be a delay before your registration is activated. |
|
|||||||
 |
|
|
Thread Tools | Display Modes |
20-06-2006, 10:41 AM
|
#1 | ||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
As you know I have just got my XR8 S3 and through out its previous life it ran on Caltex Vortex. I had my first fill up and put in Shell PULP '95, and now the cars idle (in drive) is a little rough. I don't believe the fuel is "bad". Could this idle isue be due to the change of fuel? I have also heard that the ECU (or whatever) will "dial in" the new mix and adjust, is this true?
Also,what fuel do you XR8 owners use? |
||
|
|
|
20-06-2006, 11:49 AM
|
#2 | ||
|
Fantastic Plastic
Join Date: Jan 2006
Location: Mars most of the time
Posts: 2,019
|
I own a xr6 so bit of different kettle of fish, but still , it could be just the 2 types of fuel mixed ( the old and the new ) creating a wierd effect maybe ??. As far as the ecu 'learning' the octane level of the fuel , im not sure it does - I think it's possible to get your car tuned to run better on higher octane fuels etc etc , but the ecu just works out the fuel/air ratio according to the engine/coolent temp (during warmup) and the o2 exhaust sensor when warm & running i think. ?
Whatever the case , gone are the good old days of the air/fuel mixture screw on the side of a carby ! ..lol Good question though , as i have noticed if i run on normal unleaded my car is a slug and idles like rubbish ( i get real bad economy too ) , 95 octane aint bad in my car , seems to idle smoother and the economy is a bit better and performance too , but in the end i stick to the 98 as i seem to get the best bang for buck , even though it cost more a tank seems to last me way longer , way better economy than the other 2 fuels , very noticible on how far down i have to put my foot into it too when using different fuels to obtain the same sorta torque/power. Allways runs like a gem on the 98 too ;) .
__________________
------------------------------------------------------------ :eclipsee_ Last edited by XR6-VCT-2000; 20-06-2006 at 12:33 PM. |
||
|
|
|
|
20-06-2006, 01:40 PM
|
#3 | ||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Hmmm, Vortex is rated 95, I thought it was 98. I thought that was my answer. Well if 98 will get me further per tank then price is really realitive and performance and a "cleaner" engine is the result.
|
||
|
|
|
|
20-06-2006, 01:46 PM
|
#4 | ||
|
Fantastic Plastic
Join Date: Jan 2006
Location: Mars most of the time
Posts: 2,019
|
Don't quote me on everything i said above , thats just in my case , with my car / you might find it the same for yours too, maybe ?
.. And as for the other stuff on the ecu im not 100% sure about ! , i thought i'de at least just start this thread off , as there was sooo many looksys but no replys. ;)
__________________
------------------------------------------------------------ :eclipsee_ |
||
|
|
|
|
20-06-2006, 01:49 PM
|
#5 | ||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Hopefully some of the guys with XR8's will give me some feedack re the fuel they use etc and whether the ECU (or whatever) will "dial in" the new mix and adjust. Thanks XR6-VCT-2000.
|
||
|
|
|
|
20-06-2006, 01:51 PM
|
#6 | ||
|
Fantastic Plastic
Join Date: Jan 2006
Location: Mars most of the time
Posts: 2,019
|
;) , np ... i'm sure i'll probably get backlash over what i said ..lol , thats cool though , as i'de like to know 100% for sure too . cheers
__________________
------------------------------------------------------------ :eclipsee_ |
||
|
|
|
|
20-06-2006, 01:59 PM
|
#7 | ||
|
Regular Member
Join Date: Apr 2006
Location: Perth, WA
Posts: 105
|
Hey mate i always use shell pulp 95 only because its the closest one to me and my car does idle a touch rough, i am not saying its the fuel but from what you have said it could be, i might whack a tank of ultimate in and see what happens. As for the ecu question i wouldnt have a clue, soory.
__________________
My Ride
2005 BA MKII F6 Typhoon- details soon. |
||
|
|
|
|
20-06-2006, 02:16 PM
|
#8 | |||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Quote:
|
|||
|
|
|
|
20-06-2006, 03:05 PM
|
#9 | |||
|
Regular Member
Join Date: Apr 2006
Location: Perth, WA
Posts: 105
|
Quote:
__________________
My Ride
2005 BA MKII F6 Typhoon- details soon. |
|||
|
|
|
|
20-06-2006, 03:09 PM
|
#10 | ||
|
Fantastic Plastic
Join Date: Jan 2006
Location: Mars most of the time
Posts: 2,019
|
lol , for the few cents extra , but for the piece of mind and no problems and good performance, i'll stick to my 98 hi octane fuel tyvm ..lol
__________________
------------------------------------------------------------ :eclipsee_ |
||
|
|
|
|
20-06-2006, 03:34 PM
|
#11 | ||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Yep, Iam going to try it!
|
||
|
|
|
|
20-06-2006, 03:36 PM
|
#12 | ||
|
T3/Sprint8
 
Join Date: Jan 2005
Location: Australia
Posts: 16,603
|
I have never run 95 in my S3XR8, 98 is the only go for better everything,far out weighs the savings pumping 95 in the tank.
My T3 will be the same nothing but 98 or 100.
__________________
Tickfords T3/TS50 '02 Sprint8 manual Sept 24 '16 Daily Macan GTS "Don't believe everything you read on the internet. Abraham Lincoln" |
||
|
|
|
|
20-06-2006, 03:48 PM
|
#13 | ||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Yep Iam sold! No doubt this will fix the rough idle. :hihi:
|
||
|
|
|
|
20-06-2006, 05:16 PM
|
#14 | ||
|
Giddy up.
Join Date: Dec 2004
Location: Kramerica Industries.
Posts: 15,637
|
I run BP Ultimate in mine, I used to run Opticrap vbut found it to inconsistant, I have never had a problem with Ultimate and mine idle's nicely.
|
||
|
|
|
|
20-06-2006, 05:20 PM
|
#15 | ||
|
Audi S3
Join Date: May 2005
Location: Sydney.
Posts: 8,307
|
91 RON woolworths petrol for me :hihi: cant afford anything better
 :
__________________
|
||
|
|
|
|
20-06-2006, 05:23 PM
|
#16 | |||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Quote:
|
|||
|
|
|
|
20-06-2006, 06:00 PM
|
#17 | |||
|
Giddy up.
Join Date: Dec 2004
Location: Kramerica Industries.
Posts: 15,637
|
Quote:
|
|||
|
|
|
|
20-06-2006, 06:14 PM
|
#18 | |||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Quote:
|
|||
|
|
|
|
20-06-2006, 06:24 PM
|
#19 | ||
|
FF.Com.Au Hardcore
Join Date: Aug 2005
Location: melbourne
Posts: 1,258
|
AU XR8 at close to 100 000 kms? id be looking into leads for the idle concern, or you could wait till it starts missfiring, wouldnt hurt to change plugs either, in answer to you other Q, i run my xr8 on 98, although mines been edited
|
||
|
|
|
|
20-06-2006, 06:29 PM
|
#20 | ||
|
Banned
Join Date: Jan 2006
Location: Big concrete/cast iron jungle of the south
Posts: 346
|
They all idle like crap but all is forgiven when the right foot hits the firewall
 :
|
||
|
|
|
|
20-06-2006, 06:40 PM
|
#21 | |||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Quote:
|
|||
|
|
|
|
20-06-2006, 06:42 PM
|
#22 | ||
|
Banned
Join Date: Jan 2006
Location: Big concrete/cast iron jungle of the south
Posts: 346
|
start her up now sednwol and watch the firworks. Close the bonnet on yourself so its extra dark if anyone asks you what your doing tell them to f$%k off.
|
||
|
|
|
|
20-06-2006, 06:44 PM
|
#23 | ||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
 : Great advise mate!
|
||
|
|
|
|
20-06-2006, 06:45 PM
|
#24 | |||
|
RDP #181
Join Date: Feb 2005
Posts: 438
|
My series 3 xr8 like optimax better then ultimate, my older 6 liked it the other way round.
__________________
Quote:
|
|||
|
|
|
|
21-06-2006, 08:00 AM
|
#25 | ||
|
Regular Member
Join Date: Mar 2006
Location: Can Do Land
Posts: 332
|
Correct me if I am wrong but as far as I know the 200/220's are tuned for 95 octane.
On a 220 I have found no difference between 95 or 98, if anything this particular vehicle seems to like Vortex 95 the best out of all them for economy, performance wise I don't think there is any difference between them. |
||
|
|
|
|
21-06-2006, 09:08 AM
|
#26 | ||
|
Regular Member
Join Date: Jun 2006
Location: Wantirna South, Melbourne
Posts: 425
|
Don't you get better economy using the '98 ron? Or is that an urban myth?
|
||
|
|
|
|
21-06-2006, 09:32 AM
|
#27 | ||
|
Fantastic Plastic
Join Date: Jan 2006
Location: Mars most of the time
Posts: 2,019
|
Whatever works best for you and your car , or whatever you've had it specifically tuned to run on. ;) .
__________________
------------------------------------------------------------ :eclipsee_ |
||
|
|
|
|
21-06-2006, 01:03 PM
|
#28 | |||
|
Regular Member
Join Date: Mar 2006
Location: Can Do Land
Posts: 332
|
Quote:
I drive pretty sedately being an old codger, should take it out and give it a bootfull, give it a canning, on the track offcourse. :voldar02: |
|||
|
|
|
|
21-06-2006, 05:45 PM
|
#29 | ||
|
Starter Motor
Join Date: Mar 2005
Posts: 1
|
Ive got an AUII XR8 220. I've always run vortex 95 and its never missed a beat.
Ran vortex 95 at Eastern Creek and ran a 14.607. Only mod is SS CAI |
||
|
|
|
|
| Thread Tools | |
| Display Modes | |
|
|
XR8 fuel question
Linear Mode
