Bf Standard Afrs

[SilXR6T]

Hi guys,

First of all just have to thank all you guys for providing such an informative site for the XR6T, was very reassuring to find such a positive site after forking out the hard earned!!

Anyway have had the BF (manual, couldnt convince myself on the auto) for about 5 months and it flys, but ive noticed that there is a lot of soot forming on the exhaust. My previous car was turbo and never had the soot at all after 4 years of driving and after five months I can hardly see the tip?? Is this because its running rich (my mechanical knowledge is basic at best if im way off) and its normal to produce this much soot? I have always run it on BP ultimate, does the T utilize this fuel properly or should I just go to 95ron? Being EuroIII compliant I would of thought these cars would be producing very limited amounts of soot, or am I just being altogether paranoid...?

Cheers

[F6BF]

I know that they have been tested stock and run a fat tune from the factory AFR's around 9

HTH

[Xtreme F6]

I know that they have been tested stock and run a fat tune from the factory AFR's around 9

HTH

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They all vary, some are 11's some are 10's some are 12's.

they are all different.

[Iconic Bionic]

I have the soot problem too and according to Ford it is meant to run rich for the first few thousand kays. Whatever that is exactly?? Mines a Bionic BF, the bright blue colour so I notice the soot and it covers the rear lower bumper alot and looks ordinary. Some ppl use to call Shell optimax, Optisoot beacuse there cars were getting this soot problem. I dont know about that, I run whatever premium from the big names is available when the cars empty and I get it from all of them.

[Iconic Bionic]

I have the soot problem too and according to Ford it is meant to run rich for the first few thousand kays. Whatever that is exactly?? Mines a Bionic BF, the bright blue colour so I notice the soot and it covers the rear lower bumper alot and looks ordinary. Some ppl use to call Shell optimax, Optisoot beacuse there cars were getting this soot problem. I dont know about that, I run whatever premium from the big names is available when the cars empty and I get it from all of them.

[SilXR6T]

Thanks for the replies guys, so how come there is so much variance in the settings of these cars? I undestand that tolerances make all these cars behave differently but from 10s to 12s seems like a lot. Doesnt the computer have a fixed limit and then try to maintain this?

As for the soot appearing on the bumper I cant tell because mines black, but I can only assume looking at the exhaust that I have this problem as well. I did ask the dealer about this at the 3000 service and he also said that the computer has a runin mode but I thought that was BS... maybe not??

[Iconic Bionic]

Id believe that the oboard computer would have a run in mode. I remember someone waying something about it in order to wear the engine in and protect it in its infancy. Plent of mechaical gurus on here that could confirm this.

[FSIX]

My 1st dyno run was on the blue power dyno it showed 9.5 AFR's.

[SilXR6T]

So Habbib how old was your car when you put it on the dyno? Im just curious to know if in runin mode it starts around 9s then moves to 11s and 12s as Xtreme F6 has seen as it gets more kms? Can anyone confirm this?

[loopism]

I noticed quite a sharp increase in fuel economy around the 2000km mark on my BF, so maybe it's around there.