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No mufflers = loss of torque?

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Posted by: 98LSC32V

What do you guys think, do you lose torque with no mufflers but you still have all 3 cats in place?

Posted by: rmac694203

I didn't really notice any difference. I guess it depends on the sensitivity of the butt dyno, but all I noticed was it felt faster at high rpm, but that could also just be because it sounds faster, it must be faster, right?

Posted by: k9t8m

Actually eliminating the rear mufflers does decrease torque a bit, but will give you a few extra HP on the top end. Most guys will add single or double X-pipes in order to keep the back pressure (torque) down low, while gaining the HP up top.

Posted by: driller

I don't see how doing anything with the stock manifolds and cats in place would change the torque. The stock manifolds and cats will have way more restriction than any muffler at the rear of the car.

Posted by: chickenviii

funny, i removed the back half off of my exhaust (gen2's are flanged midship) one day i was bored after work so i took it off. needless to say it went back to stock the next day, i didnt like how it sounded too buzzy to me, and i like loud exhaust, and if felt like it was lacking power. i agree with driller, but it did feel like i had to accelerate harder to get moving

Posted by: MediumD

Quote:

Originally Posted by driller

I don't see how doing anything with the stock manifolds and cats in place would change the torque. The stock manifolds and cats will have way more restriction than any muffler at the rear of the car.

+1

Removing the mufflers won't do much of anything either way.

And you do not lose torque with a bigger exhaust... you lose it with a too big exhaust because of poor velocity and scavenging - which are commonly mistaken for backpressure.

Posted by: mespock

I didn't notice anything...

Posted by: turborich

No issues when I removed my rear mufflers & resonator.

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