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From: walter at roadster.sps.mot.com (thomas walter x5955)
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To: DIY_EFI at coulomb.eng.ohio-state.edu
Subject: Re:  Haltech throttle bodies and Re: Fuel injection questions
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Reply-To: DIY_EFI at coulomb.eng.ohio-state.edu

Solution to the reversion problem dealt with the intake manifold. The
revised manifold was slightly different. Seems the port - intake manifold
- injector location was at some critical point at the desired rpm.

Wave theory is just one of those things I would not think about, but
came into play on that design (remember it was a race engine, with
a radical cam... ). No, I did not have anything to do with the solution. 

Perhaps one of those "why didn't I think of that" was the elimination
of the air pumps and the additions of reed relays to the air cleaner
housing. First time I saw that (under the hood of a Datsun), it really
took along time to figure out what they had done. Despite having built
and played with two stroke motorcycles, it was not exactly clear WHY
it worked. Once it dawned on me, it seemed almost too simple of a
solution. ;-)

--Tom