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Go Back   Australian Ford Forums > Site Sponsor Forums - In Alphabetical Order > Blue Power Racing Developments

Blue Power Racing Developments The home of Blue Power. Website Link

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Old 20-10-2010, 08:21 AM   #1
bigbretty
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Default BA MK II XR8 underdrives

Which underdrives would you recommend for my Xr8 ute? the 10% or 25%. I have full exhaust, CAI (unfortunlately an SS inductions one, but will be 'upgrading' soon) and that's it.

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Old 20-10-2010, 01:12 PM   #2
Theo@BluePower
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well if you are going to the effort of putting them on i would put 25% ones as the 10% does not do much ...
If your car is manual you need to do oil pump gears aswell..

I would get the car custom tuned if you are only looking at doing a few mods as the car will be totally different and we can mail out a tune to you ...
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Blue Power Racing Developments
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47 Cooper Street Campbellfield Vic
03 9305 3000

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Old 20-10-2010, 02:51 PM   #3
bigbretty
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is it better to do the whole pump with the billet gears or is it just as good to replace the gears only?
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Old 21-10-2010, 08:25 AM   #4
Theo@BluePower
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A few years ago it was cheaper just to do the gears.. but now days with the dollar being so good to us its going to be cheaper replace the whole pump..
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03 9305 3000

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Old 21-10-2010, 02:11 PM   #5
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If you worried about the pump speed, theres a PB kit that replaces the pump pully wheel which lifts the speed of the pump back to the factory speed.
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Old 21-10-2010, 02:21 PM   #6
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they're talking about the oil pump dude...
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