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tbitz tbitz is offline
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Join Date: Feb 2001
Location: Ottawa
Posts: 761
Re: MegaSquirt Airbox Question and TBitz Tip

Originally posted by JohnJL
First the question...

I am following Bitz Racing's Megasquirt install manual (Thanks Tony!) and did all the steps on pages 17-20 where it very specifically described how the fuel distributor is removed and a 'block off place' installed. But the pics on page 36 (and the ones here: BITZ EFI pics ) clearly show that part of the airbox and assembly not installed in the final assembly.

Here are some other pics from this board showing that part of the airbox not installed. And there is no mention of cutting the airbox in the Bitz manual.

Anyone have more detailed instructions/pics on cutting the airbox and whether the air regulator assembly is needed?

Oh, here's the tip: You can remove the injector bungs very easily by tapping them out from the bottom with a brass drift and hammer. Only takes a few taps and they come right out. No need to dremel.

Here are the pics from flipper and tony with no sight of that regulator assembly...

Also, where do the AAR hoses connect to/from in an MS install?

Thanks all.


As mentioned above the kit was designed to keep the CIS look and give you the option to go back to CIS (Highly unlikely event) after you've installed the kit.

So most folks that install the kit know from the start they will never go back to CIS, so anything that is non essential for EFI is removed. This means cutting up the airbox and getting rid of non essential CIS parts.

If you go for the "Clean look", then the AAR will require a small air filter at the intake. You can use one those oil breather filters. The other side of the AAR goes back the the airbox via the existing aluminium hose. You'll also need an air filter at the oil cap location, a cone type air filter, and a 90 degree rubber boot, and 90 degree metal hose to attach the cone filter. Check the gallery section on my web page for pictures.

Thanks for the "tip". I can't recall if the new EFI injector bungs will fit without the stakes ground away on the intake runners, though.

'78 911SC with BITZRACING EFI conversion kit
Old 07-29-2005, 01:46 PM
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