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

[Teutonic_Tamer]

OK, waiting patiently Robin!   

[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

[RobGTI]

All the results are located here:

http://www.jkm.org.uk/performance/GalleryGTI00309.htm

[RobGTI]

Nice torque curve on yours T_T, seems that the Intercoolers help hold boost??,rather then falling away like most ive seen on jkm's rollers.

Just dug up my graph as am interested in how much the intercoolers do.

Not that I profress to know about these things but here what I think:

On my graph the torque starts to drop away at 3500 rpm while TTs is flat all the way until 5500 rpm, I assume this holding the torque equates to the stronger top end! 


BTW
It was actually 199.4 bhp not 199.2, that .02 will make all the difference

[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.

[Max Q]

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.

[bacillus]

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?

[Teutonic_Tamer]

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. 

[Hurdy]

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

[Teutonic_Tamer]

Nice torque curve on yours T_T, seems that the Intercoolers help hold boost??,rather then falling away like most ive seen on jkm's rollers.

Just dug up my graph as am interested in how much the intercoolers do.

Not that I profress to know about these things but here what I think:

On my graph the torque starts to drop away at 3500 rpm while TTs is flat all the way until 5500 rpm, I assume this holding the torque equates to the stronger top end! 

Basically, yes.  Because the inlet tract is less restrictive with the larger intercoolers.  Robins plots are similar to yours.  Now bear in mind, Robin also has a freer flowing air filter, along with his Carbonio, whereas my air filter and inlet are pure stock - so that must mean the stock GTI is quite restrictive at high revs.

Oh, and don't forget the other primary benefit of uprated intercoolers - check out the differences in the air temperatures between mine and Robins - and work out what I am on about. 

BTW
It was actually 199.4 bhp not 199.2, that .02 will make all the difference

Pah, what's a fifth of a pony between mates!