IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Headers with stock exhaust

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Old 02-22-18, 08:38 PM
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AJU72
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Default Headers with stock exhaust

What would headers with stock midpipe and axelback sound like? I'm wanting to add power but I don't want it to be too loud. Is this the best option? I have an invidia axelback on now. Should I leave that on? I have a 14 250
Old 02-22-18, 09:14 PM
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ClubLUser
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Originally Posted by AJU72
What would headers with stock midpipe and axelback sound like? I'm wanting to add power but I don't want it to be too loud. Is this the best option? I have an invidia axelback on now. Should I leave that on? I have a 14 250
i would change the midpipe before headers, midpipe removes secondary cats and that increases power a bit. Changing headers would introduce smells and a possible CEL light.

Or you could keep it the way it is, and get a tune.
Old 02-22-18, 11:31 PM
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romneezy
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I've seen videos of aftermarket axlebacks with the megan midpipe and it sounds perfect. However, those were for the 2IS which might not have the same fitment as ours.
Old 02-23-18, 12:00 PM
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AJU72
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Originally Posted by ClubLUser
i would change the midpipe before headers, midpipe removes secondary cats and that increases power a bit. Changing headers would introduce smells and a possible CEL light.

Or you could keep it the way it is, and get a tune.
Oh wow, I didn't think headers would cause problems. What would a tune accomplish as far as horsepower? I haven't gotten a midpipe, because I am worried it will be too loud. I like the way it sounds now, it's just sort of noticeable.
Old 02-23-18, 12:06 PM
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Solara350
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Originally Posted by AJU72
What would headers with stock midpipe and axelback sound like? I'm wanting to add power but I don't want it to be too loud. Is this the best option? I have an invidia axelback on now. Should I leave that on? I have a 14 250
you know what makes ton of horsepower ? buy a used IS350 3.5L engine and snap in there, there is a guy on Youtube swap 2JZ-FE Engine for his IS250.
Old 02-23-18, 01:54 PM
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Originally Posted by AJU72
Oh wow, I didn't think headers would cause problems. What would a tune accomplish as far as horsepower? I haven't gotten a midpipe, because I am worried it will be too loud. I like the way it sounds now, it's just sort of noticeable.
A tune would take advantage of current mods. But at the very least a 10whp bump? Not entirely sure, I'm on the V6 350.
Old 02-23-18, 02:16 PM
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..........

Last edited by DMV350; 01-16-19 at 07:55 PM.
Old 02-24-18, 12:13 PM
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https://www.ovtuned.com/collections/...e-package-2015
Old 02-24-18, 12:18 PM
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AJU72
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Would this work on a 250?
Old 02-24-18, 01:56 PM
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Headers works with stock exhausts. Have customers that have done that. Headers will gain you lot of noise and power.

Contact us for pricing on PPE headers.

-Josh
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