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Old 05-01-2013, 10:26 PM   #1
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Safe 2.1 kb mod?

So im about to get a 2.1 kenne bell sc...they told me they only recommend a stock stang and their base tune and not lt's or catless. So Im wanting shorty headers catted x and a nice catback. Would this still be safe on their base tune? I asked kenne bell twice if it would be safe and they said is they only recommend stock. All its really doing is freeing up air flow. Would this cause it to run lean?
Thanks for any help in advance.
Im about to order both and want to be sure since i was going to just custom tune and they said not to and just use base tune.
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Old 05-02-2013, 02:25 AM   #2
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id save up and get a dyno tune as well with exhaust.
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Old 05-02-2013, 03:18 AM   #3
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id save up and get a dyno tune as well with exhaust.
What are all the pros and cons of just keeping their tune like they suggest?
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Old 05-02-2013, 01:54 PM   #4
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What are all the pros and cons of just keeping their tune like they suggest?
I plan on getting a kb for my car the end of this summer and ill be trashing their tune. Every car is different so I would want to be sure that with my mods that my car is running the best it can and as safe as possible. The only way to know that is with a dyno tune. You will definitely run lean with the tune they give you if you do exhaust.
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Old 05-02-2013, 05:03 PM   #5
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With an upgraded exhaust (LTs and mid pipe) you"ll pick up some tremendous numbers as compared to stock style exhaust. Don't waste the money on shorty headers, but at least do a mid pipe.
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Old 05-02-2013, 05:16 PM   #6
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With an upgraded exhaust (LTs and mid pipe) you"ll pick up some tremendous numbers as compared to stock style exhaust. Don't waste the money on shorty headers, but at least do a mid pipe.
I wanted to but i also want the kb and i called them and they said keep it stock and i said i at least want full exhaust and he said only do shorties then.
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Old 05-02-2013, 06:27 PM   #7
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With an upgraded exhaust (LTs and mid pipe) you"ll pick up some tremendous numbers as compared to stock style exhaust. Don't waste the money on shorty headers, but at least do a mid pipe.
Can aftermarket midpipes fit on stock manifolds? I didnt think they could.
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Old 05-02-2013, 07:08 PM   #8
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Can aftermarket midpipes fit on stock manifolds? I didnt think they could.
Absolutely. Almost everyone on here does it myself included
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Old 05-02-2013, 07:16 PM   #9
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Absolutely. Almost everyone on here does it myself included
Thats great to know! Learn something new everyday i get on here.
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Old 05-02-2013, 09:04 PM   #10
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Stock manifolds are fine up to 600hp, there is a reason the terminator guys usually don't mess with them until that level, they don't need to.
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Old 05-02-2013, 09:11 PM   #11
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Stock manifolds are fine up to 600hp, there is a reason the terminator guys usually don't mess with them until that level, they don't need to.
But are they really as restrictive as some say? I just want a nice smooth flow.
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Old 05-02-2013, 09:16 PM   #12
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Its honestly kind of a myth heldover from the 5.0 days. 5.0 headers really are restrictive vs aftermarket but the 4.6 headers... not so much. Your money is better spent elsewhere. Especially if you have a stock motor with the stock rotating assy. That KB will make more than enough power on its own to shatter the stock stuff. Hell, even a stock Eaton on a Tork Tech will... I'd wait for longtubes until you do a built motor that has the ability to get near or over the 550-600whp mark.
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Old 05-02-2013, 09:26 PM   #13
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Its honestly kind of a myth heldover from the 5.0 days. 5.0 headers really are restrictive vs aftermarket but the 4.6 headers... not so much. Your money is better spent elsewhere. Especially if you have a stock motor with the stock rotating assy. That KB will make more than enough power on its own to shatter the stock stuff. Hell, even a stock Eaton on a Tork Tech will... I'd wait for longtubes until you do a built motor that has the ability to get near or over the 550-600whp mark.
Thanks for the help man, i appreciate it.
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