How many XF worshippers regularly visit this forum?
I'm embarking on a mission to increase the output of my beloved XF Fairmont Ghia EFI. It's currently stock-as-a-rock except for a 2" lowering job and a dual fuel system (yucky). The engine, transmission and diff were rebuilt stock within the last 3 years.
I'm investigating a K&N air filter and pretty soon a 2.5" exhaust system (with extractors, hi-flow cat and muffler).
Does anyone know of a nice way to improve the setup of the standard EFI induction box. I also have a stupid gas mixer in the line before the airflow meter. I wish the battery wasn't there, I could do some neat rearranging of the standard unit.
This is just an introduction message, I might be posting more often depending on how many XF drivers there are here.
A good start would be to decide on one or the other in terms of fuel. Running dual just sucks. One mod I have heard about for the air box is to cut the underside of the square plastic tubes that leads to the VAF. I havent done it though.
My plan is to run straight gas with a GasReasearch mixer. With these properly setup you can have minimal loss between gas/petrol.
Good luck on your quest.
Go the XF's!!
Do I really have to write something funny in here?
DILLIGAF: a subsiduary of the DGAF NOP group of companies. BSR Member - 'Blanky' 'ConeKiller'
I've considered the GRA system myself but was quoted $1200 to get it done - pretty expensive considering I already have a dual fuel system. I know they change throttle bodies and stuff, but I'd hate to do it and find the performance is still less than petrol or about the same. Maybe the max power is better but the low end is still doughy.
Can you clarify what you meant about cutting the airbox?
And what do you know about recurving distributors for gas?
When I put extractors on my EFI XF, the airbox wouldn't fit back on (it just sat on the extractors). To make it fit, I cut off the bottom of the airbox and made up a metal shield to stop it drawing the air straight off the extractors. The better way to do it is to unbolt the air flow meter off the airbox and buy a pod adaptor available from most auto places. You can then run a pod setup. When I get around to it, I will run a pod down behind the bumper. To help fit everything in, move the battery to the boot.
Other mods to consider is to replace the standard fan with electric thermatic fan which will free up around 5kw. You can also get a set of roller rockers through Yella Terra which should add another 5-10kw.
You say these are readily available from auto places? I haven't seen anything around, but then again I haven't been looking. Autobarn/Repco/Burson?
I've gotta do something to the induction, because it starts behind the right headlight and snakes its way around the battery then down and into the side of the airbox - a hell of a journey I reckon, why not go straight in somehow? I think the induction and filter will be good bang for the buck, don't you?
About thermo fans - I've been told they cause more trouble than they're worth - flat batteries etc. Besides I recently fitted a new viscous fan clutch because the old one was shagged - it seems to come on and off nicely but sometimes it stays on after about 30mins of driving which PISSES ME OFF because it saps so much power and sounds yuck.
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