Mk5 specific results from the JKM RR day on 7th March 09

[Teutonic_Tamer]

Have now changed Revo Fuel setting from F9 to F7 at my VW dealer. Taking Jim's advice to lower the AFR from about 12.2 to 12.0.

If you have the standard oem HPFP, did they log your requested and actual fuel rail pressure after making the change?

The fuel rail pressure shouldn't really affect the air fuel ratio - unless you are truely maxing out the fuel injectors with a stage 3 setup.  And I think the stock injectors are more than adequate.

[Teutonic_Tamer]

Mine came spray painted black too. Like you say Sean, it is a very thin coat of black paint.

Is yours holding up without any chips?

[RedRobin]

Have now changed Revo Fuel setting from F9 to F7 at my VW dealer. Taking Jim's advice to lower the AFR from about 12.2 to 12.0.

If you have the standard oem HPFP, did they log your requested and actual fuel rail pressure after making the change?

....Yes I have the standard HPFP.

JKM will have my logs from the dyno session and we'll be able to compare on next session on 18th April. << I've just seen T_T's post and so question your question.

We did the F9 to F7 change via a laptop at home (my friend who is both a VW mechanic/tech and Revo agent). JKM are 2hrs away.

[Teutonic_Tamer]

So does anyone have any comments on my second graph - particularly my air-fuel ratio?  Because mine does seem to drop off, yet still makes good torque and power at the top end?  

[Hurdy]

Mine came spray painted black too. Like you say Sean, it is a very thin coat of black paint.

Is yours holding up without any chips?

There are one or two minor silver bits peeping through, but all-in-all it is holding up quite well

[RedRobin]

Robin,

Do you mind explaining the reasons Jim gave for recommending you change your fuel to 7 as opposed to 9? I was originally set up with B6, T5, F6 but when I queried the fuel setting with Revo they were recommending 9.

Cheers.

....All Revo's settings are designed to be safe and these variations are fine tuning individual cars AFAIK.

I find that Carl at Revo tends to encourage the more aggressive setting options and it's reasonable of him to assume that it's what most people want.

Jim and Keith are using a dyno and their knowledge of my individual car to form their recommendations.

I don't remember accurately enough to say why Jim said he preferred to see 12.0 than 12.2 but it made total sense at the time. In other words, I forgot, but I trust his advice.

[Hurdy]

So does anyone have any comments on my second graph - particularly my air-fuel ratio?  Because mine does seem to drop off, yet still makes good torque and power at the top end?  

Only poser I can think of is whether or not the engine moves into stratified mode during a power run at some point

[stealthwolf]

No scanner, so unable to put up adequate scans. Anyway, here's mine:

[RedRobin]

There are one or two minor silver bits peeping through, but all-in-all it is holding up quite well

....Talking about your hair is bit off-topic isn't it Hurdy?

[RobGTI]

Forge themselves powder coated it I asked them to paint it black not powder coat it, they (John) claimed it wouldn't effect as he put it the "thermal efficiency" or warranty.

I'll might have to ask them about this bearing in mind what you say. 


I paid £650 all inc plus £50 for the powder coating.

With regards the S3 cooler, I'll see how I get on with this maybe I'll need one with all the powder on it

I reckon John (or you!  ) might have confused the powder coating vs paint.  When I initially spoke to Russell from Forge, he carefully explained to me that they will only flash spray a very thin coat of black paint on their coolers - and when they sent mine, the paint was very thin - but is standing up well to the winter without a single chip.  Maybe you ought to speak to Russell. 

Not picked it up yet as I saved on the delivery charge as I drive by Gloucester every other week. When I pick up I will certainly inspect the part to try and guage the thinkness of the powder / paint. Just checking back my emails with John and they do state powder coating.

I also (before you responded) asked John via email to back up the claims that powder coating doesn't effect the performance of the cooler. We'll see what the repsonce is.