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09-10-2007
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#1 |
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Join Date: Aug 2005
Location: San Fernando Valley, CA.
Posts: 896
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Pop/miss on decel?
Heard about the decel/backfire thing on these cars..Supposedly Haibeck tunes stop (car has H. tune).
Never noticed this til I listened to this a few times as its a little "boomy" in the interior but you can hear it . Does this sound typical or like more of a miss? (Towards the end of the clip) http://www.youtube.com/watch?v=iJiF6YLhYgE
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1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj. |
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09-10-2007
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#2 |
Join Date: May 2005
Location: Leesburg, VA
Posts: 2,713
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Re: Pop/miss on decel?
You have to specify that you want the anti-backfire thing. I believe all it is is changing the DFCO (decel fuel cutoff) such that when you get off the gas the ECM still provides proper fueling.
I don't think his chips have this by default. He asked me if I wanted it when he tuned mine, but I think the backpopping sounds cool! Edit: nothing in your clip sounded untoward or abnormal to me
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Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img] Last edited by Aurora40; 09-10-2007 at 02:17 PM. |
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