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Cutout questions

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Old May 25, 2010 | 01:38 PM
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Default Cutout questions
Sup guys, I just bought a z28 and it has a flowmaster and a cutout.The flowmaster is way too quiet for me and I'm wondering if any of you have any experience running a cutout with stock manifolds in california. Does it affect gas mileage? With the stock manifolds/cutout is it insanley loud?(I don't want it too loud) Just wondering because I might unbolt the cap after I smog the car.
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Old May 25, 2010 | 02:01 PM
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your gas mileage will be fine, and yea open it up it wont be too loud. I drove my car around with stock manifolds and open cutout for quite a while. It will have some drone and be pretty loud but nothing crazy loud.
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Old May 25, 2010 | 02:11 PM
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it will still be on the quiet side.
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Old May 25, 2010 | 02:13 PM
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I run mine open all day long with long tubes and no cats lol it's not that loud
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Old May 25, 2010 | 03:34 PM
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I run the same setup on my 99 T/A..The cutout is never closed. It is not that loud
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Old May 25, 2010 | 03:43 PM
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Running Elec. Cutout/Exhaust in sig with cutout ALWAYS full open, still pretty damn quiet, until WOT that is
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Old May 25, 2010 | 05:03 PM
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when i had my FBody i had a cutout and it was open all the time. It wasnt that loud, or wasnt too loud at least. At WOT though the LS1 has a rasp that doesnt sound too good, but despite that, the added power of the less restrictive cutout was worth it.On my galaxie, i drive on the streets with the cutouts closed because it is obnoxiously loud with them open.
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Old May 25, 2010 | 07:52 PM
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I got sick of my cutout and just did a full exhaust. I thought the open cutout on stock manifolds sounded like ***.
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Old May 26, 2010 | 02:56 PM
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Originally Posted by nomoneyz
I got sick of my cutout and just did a full exhaust. I thought the open cutout on stock manifolds sounded like ***.
+2. And having a lopey cam with an open C/O sounds pretty bitchin also. Not that that should be the soul reason for camming a motor, LoL.
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Old May 26, 2010 | 03:30 PM
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Originally Posted by nomoneyz
I got sick of my cutout and just did a full exhaust. I thought the open cutout on stock manifolds sounded like ***.
I agree. Sounds a lot better with some headers on it.
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Old May 26, 2010 | 04:22 PM
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i bought my stock z28 with no catback!
just ended at the y-pipe it was loud but drivable. only thing i hated was the extra vibration it got when cruising in the freeways.
only reason i put a catback was to pass smog
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