catback vs axle back

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big c johnson

Member

Aug 3, 2010

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1

8

Jan 10, 2012

#1

• Jan 10, 2012

• #1

So I have a lt headers off road x cams and a super charger goin on my 2010 and I know that it's gonna be way too loud because it's got pype bomb axle backs on it. Now my question is will I be better off goin with a cat back, magna pack 3", or just an axle back mufflers? Also catbacks do not require tuning correct?

 

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madweazl

Founding Member

May 30, 2001

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Woodbridge VA

Jan 10, 2012

#2

• Jan 10, 2012

• #2

You're going to require a tune after the install on those parts so why not go cat back at the same time? Leaving the stock cat back will create a restriction negating the positive effects of the headers and crosspipe. Magnaflows typically are ridiculously loud and may be a good option. If the cross pipe has hi-flow cats, that will help tone it back down as well. Axle back would be a total waste; any restriction downline is going to negate all the potential positive effects of anything before it.

 

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big c johnson

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Aug 3, 2010

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Jan 10, 2012

#3

• Jan 10, 2012

• #3

its currently at the shop now thats my main reason of wondering about the tuning haha. and there is no cats i leave in a emissions free area

 

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madweazl

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May 30, 2001

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Woodbridge VA

Jan 10, 2012

#4

• Jan 10, 2012

• #4

Hold off on the tuning until you can free up the rest of the exhaust; it's a waste of time and money.

 

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big c johnson

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Aug 3, 2010

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Jan 11, 2012

#5

• Jan 11, 2012

• #5

i would but its scheduled to get tuned today or tomorrow

 

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big c johnson

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Aug 3, 2010

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Jan 11, 2012

#6

• Jan 11, 2012

• #6

plus doin the cat back wont effect the air fuel ratio in any way so it shouldnt effect the tune itself. the dyno numbers might be slightly off but it wont be a big deal, someone correct me if Im wrong? I talked to some of the guys up at bama and thats what they told me

 

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madweazl

Founding Member

May 30, 2001

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Woodbridge VA

Jan 11, 2012

#7

• Jan 11, 2012

• #7

It will because of the reasons above; once the headers and crosspipe are uncorked it's going to need more fuel to make the additional power they're capable of producing. Is there no catback system available?

 

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big c johnson

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Aug 3, 2010

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Jan 11, 2012

#8

• Jan 11, 2012

• #8

there is. its just I dont have the money for the one i want right now and Im not gonna pay for it to get done when i can easily do that my self at home, my tuner even said its not gonna effect the way they do the tune