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SD question with 2BAR hptuner

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Old 07-08-2008, 05:32 PM
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Default SD question with 2BAR hptuner
If using 2BAR with hptuners, my understanding it is for SD only. I assume this means you can no longer use the MAF. What about closed loop using the o2s to keep steady as possible 14.62 stoich?
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Old 07-08-2008, 05:43 PM
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You can still use closed loop as normal with an SD tune. Oddly enough, you could also still use the MAF if you wanted to, but most boosted applications max it pretty quickly.
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Old 07-08-2008, 05:47 PM
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Originally Posted by gametech
You can still use closed loop as normal with an SD tune. Oddly enough, you could also still use the MAF if you wanted to, but most boosted applications max it pretty quickly.
That is correct. I've done many 2 bar tunes on cars that needed to pass an emissions test, so we need to keep the MAF enabled. Contrary to popular belief, it does work.
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Old 07-08-2008, 05:48 PM
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Originally Posted by gametech
You can still use closed loop as normal with an SD tune. Oddly enough, you could also still use the MAF if you wanted to, but most boosted applications max it pretty quickly.

That's when I assume the VE tables would come into play after the MAF is maxed out. I was told with Hptuners, you can no longer use the MAF.
I am waiting for an definite answer for the hptuner board.
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Old 07-08-2008, 07:55 PM
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If you search old threads on the HPT board, you will find that Chris (one of the owners) specifically states that the 2bar SD OS does NOT disable using the MAF.
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