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Re: will i need a piggy back ECU?
From what i've seen on all the mod work - with cam & head mods, you can squeeze an extra few Kw out of it with an aftermarket ECU thanks to better fuel mapping, but you will definately be able to do the job with the stock unit.
I'm led to believe there's chips available for the standard computer that alter the map or possibly make the whole unit more flexible - but i've never seen a car firsthand with one of these chips installed.
If you were looking at changing the ECU - personally i figure you may aswel do a complete replacement to something less restrictive.
People here have put Wolf3d management in place, but personally i dont like the wolf - far to few outputs, it was definately more intended for rotories or 4cylinders.
Also, it doesnt have quite as many mapping points as it's successor - the wolf3d v4.
THe advice i've been given - even tho i like the look of version 4, is to steer clear of wolf competely and spend some real cash on a Motec or Altec or even *shudder* a Delco.
Delco conversion would be the cheapest and easiest in my opinion - the only real dirty bit involved is putting a 'disc-kinda-thing' on the crank for the delco crank angle sensor to operate.
Unless you plang going forced induction anytime soon - i'd stick with the stock unit for your current plans.
My .02, ph0.
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'81 ex-pursuit XD 4v o/c 351c, Toploader, big borg LSD.
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