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Old 06-26-2004, 12:52 PM
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cheap high performance efi

I have been looking through old posts and alot of diy efi sites and been pondering some ideas of my own. I am looking into building a turbo (maybe twin) sbc thats fuel injected for my v8 powered bug. I allready have a little 283 that i am going to run now, I just want to get some ideas together so over the next few years i could build a more powerful motor for it on the side. Anyways, I was thinking of building my own efi setup rather then handing a couple g's to someone else. I am trying to determine the best approach for about 500 soild hp. I was thinking of taking an old vic jr. single plain and drilling and welding in bosses for the injectors, and using fuel rails off maybe a old tpi setup. For a throttle body i was thinking of taking an old carb (maybe a q-jet) and attaching a tps to it. My other idea was taking a old tpi setup and rebuilding that, in either caase i would probibly go with new larger injectors and for sure use a tuneable ecu like the megasquirt, with a new wiring harness.
Any ideas would be great!, I will post some updates of the bug soon.

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Old 06-26-2004, 05:43 PM
Siggy_Freud's Avatar Moderator
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You can buy a near complete TPI setup off ebay for 3-400 bucks. I suppose you could do it the ultra custom way if thats what your going for but it seems this way would be cheaper. You could probably find all the fuel parts and then fabricate your own plenum and runners and possibly manifold too.

Some advice, if you go with a TPI DO NOT got with an 85. If you have wiring problems you will be hard up to find an aftermarket harness designed for this year. If you have the older bolt pattern heads then an 86 is the year you want. If you are handy with machining then anything after 85 is good (after 89 I believe they switched to speed density which would probably be better space-wise for your bug as you can just slap the air filter on the end of the plenum).
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