Nah, i took my chip off and Running it like that.... its better without the chip and i have noticed about 30% differenceafter doing it, the only problem is that my throttle only opens up 85 % not the full 100%but it gose great and u loose ur aircon compressor , the throttle is in the way.

how did you get the throttle body on the ed manifold to fit with the au a/c compressor? cause i tried and there was no room

Not sure if it will be the same in the case of an au motor but heres what I did to fit an ea/ed manifold to my ef motor thats in my xf.

I gather you are using the serpentine belt setup?.

I used a eb aircon bracket and mounted the compressor lower (there are already holes there to do it on my motor). Then the belt hit the top of the tensioner so I needed to space the compressor out further.

So I used the spacers that were originally on the compessor and one washer on each bolt to space it out enough to clear. I think it was the top bolt of the compressor that was then too short so just got a longer bolt. I also used an xr8 belt which was around 25mm longer than the ef one.

It dosent clear by much but it does.

On top of all of this you will need to change all of your pipes and hoses under the inlet manifold and the one that goes around to the water pump. Dipstick and fuel rail and I think thats about it.

I do know that you can possibly get an xh tensioner which changes that angle of the belt but they are not real cheap so I went this road and is working just fine.

Hope this helps a little.

LOL, I lost my aircon so that i could get that manifold on, i also got a bracket with a pully to replace the aircon, so now it fits and belt setup is the same but with a bracket.....lucky its winter now imagine in summer......

cant you put an earlier ac compressor on so you can fit the ed manifold and a/c??

You could but then you would have to change all of the acessories on the front of the motor to ea/ed gear which is another way around the problem but the serpetine belt set up is better.