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  #1  
Old 01-10-2010, 11:13 AM
mwolverine8 mwolverine8 is offline
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Default Will a cat bypass add alot of torque?

Will a cat bypass add alot of torque? Or will it add any torque at all? My friend says it adds alot of torque.
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  #2  
Old 01-10-2010, 11:31 AM
Jay FX4 Jay FX4 is offline
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Nope.

The cats are not a bottleneck to your exhaust. If anything, you may lose some low-end torque if there's a significant reduction of back pressure.
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Old 01-10-2010, 11:49 AM
Jp7 Jp7 is offline
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Originally Posted by Jay FX4 View Post
Nope.

The cats are not a bottleneck to your exhaust. If anything, you may lose some low-end torque if there's a significant reduction of back pressure.
Right, but you have the wrong mentality.

Reducing backpressure does not reduce your torque.

Slowing the exhaust down reduces your torque.

Most of the time when you do one, you get the other though.
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Old 01-10-2010, 02:46 PM
Jay FX4 Jay FX4 is offline
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Originally Posted by Jp7 View Post
you have the wrong mentality.
Yeah, I hear that a lot.
What slows it down?
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  #5  
Old 01-10-2010, 04:41 PM
98blownranger 98blownranger is offline
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you will loose some low end with out the cat, the cat flows very good you will not gain anything by removing the cat.
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  #6  
Old 01-11-2010, 04:23 PM
TurdFX4 TurdFX4 is offline
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you'll lose a bit of power.

I cut the muffler off of my '99 ZR2 sonoma and it killed my power. obviously not the same motor but just an example
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Old 01-12-2010, 01:47 AM
b337y b337y is offline
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Originally Posted by TurdFX4 View Post
you'll lose a bit of power.

I cut the muffler off of my '99 ZR2 sonoma and it killed my power. obviously not the same motor but just an example
bump
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  #8  
Old 01-12-2010, 01:56 AM
Fx4wannabe01 Fx4wannabe01 is offline
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Quote:
Originally Posted by TurdFX4 View Post
you'll lose a bit of power.

I cut the muffler off of my '99 ZR2 sonoma and it killed my power. obviously not the same motor but just an example
Actually.....what caused your lack of power was most likely the elimination of a full tailpipe....
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  #9  
Old 01-12-2010, 08:05 AM
Jay FX4 Jay FX4 is offline
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bump
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  #10  
Old 01-12-2010, 11:56 AM
Jp7 Jp7 is offline
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port the head, bigger cam, tougher springs and valves if you want it to be more powerful.
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  #11  
Old 01-12-2010, 03:12 PM
Kingoverace Kingoverace is offline
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start with the simple things, unless you got the time n money to do it right like Jp7 said... Otherwise, the simple bolt-ons will atleast feel better, K&N(though some hate it), add a e-fan, and underdog crank pulley, this is only free-ing up HP, not exactly making it a race truck.
Check you gear ratio, for more torque I would make sure you got the 4.10's!
And Jp7, You got pics of that Evo? I dream about Evo's like teenage boys dream about $ex!
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Old 01-12-2010, 09:47 PM
b337y b337y is offline
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as in yea your gonna lose alota power unless ur pushing major whp
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  #13  
Old 01-12-2010, 09:57 PM
PowerRanger PowerRanger is offline
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i cut out my cat and all it did was make it sound better
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  #14  
Old 01-12-2010, 10:05 PM
Jay FX4 Jay FX4 is offline
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Originally Posted by PowerRanger View Post
i cut out my cat and all it did was make it sound better
That's not all it did....
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  #15  
Old 01-13-2010, 05:22 PM
TurdFX4 TurdFX4 is offline
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Quote:
Originally Posted by Fx4wannabe01 View Post
Actually.....what caused your lack of power was most likely the elimination of a full tailpipe....
well thats what I meant. cut the muffler off, therefore no tailpipe, and then the loss of power! lol
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