Quote:
Originally Posted by semtex
On these Helix test pipes, do you by chance remember whether or not the extensions were closed off at the end where they connected into the test pipes? I think that might be the key.
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I know exactly what you're talking about with the 'nested' anti-foulers.
The helix ones weren't closed at all, it's just an extension with threads. I wanted to try adding the non-drilled anti-fouler onto the extensions but the o2 sensor wouldn't fit on. For sh*ts & giggles we tried the drilled out o2 anti-fouler, but that did nothing. One other thing I didn't like about the helix v2's is that the o2 sensor extensions are angled down slightly, maybe 5 to 10 degrees from what I remember.