exhaust question

[kdmranch]

What would the horsepower difference be on a 91Z with B&B exhaust if I were to run with a X pipe in place of the resonator? Car is stock with stock exhaust now. I have a 90Z with watkins headers and corsa exhaust, no X pipe, but the sides are tied together. will the 91 be louder with a B&B system with the X pipe and stock manifolds than my 90 is headers and the corsa? Thanks!!

[GOLDCYLON]

What would the horsepower difference be on a 91Z with B&B exhaust if I were to run with a X pipe in place of the resonator? Car is stock with stock exhaust now. I have a 90Z with watkins headers and corsa exhaust, no X pipe, but the sides are tied together. will the 91 be louder with a B&B system with the X pipe and stock manifolds than my 90 is headers and the corsa? Thanks!!


About 5-10 HP with the X Pipe and the straight B&Bs, and hell yes it will be louder. It will be difficult to hold a conversation in the car but you can still always talk to youself :mrgreen: Turn up the radio and rock on.


Also if the Corsas are in good order several people here would love to buy them from you. If you are a sado type install the watsons with B&Bs and an X-Pipe for even a more horsepower gain.

[bradslt5]

does your car have the cats still. that makes a difference . i have 2 90s one fully ported with jeal headers and a custom exhaust its quieter than my wifes car that is stk with desert developement exhaust. the xpipe i found make alot of resonance unless one goes with one of the xpipe mufflers on the market . also removing the cats makes the car alot raspier. i have come up with a quiet exhaust for car with headers that doesnt cost any power at all . . here is what it is . 23/4 in to a 3in magnaflow xpipe muffler. 23/4 from there with a small balance tube right at the upturn(a 7hpimprovement on my car)to flowmaster 539712 70series mufflers . i cut off the factory tips and installed them on the mufflers so that it looked like a factory stk setup. we did a same day comparo on a chassis dyno in bakersfield . the car made 423.3hp and 371.6 tq with the desert developemt exhaust 3in and with this setup made 429.7hp and 377.2 tq with this setup. its a very quiet setup with just enough bark when @ full throttle to be heard . my buddy is working on putting in some perferated stainless to line the inside of the tipps to quiet it even more. what i have been looking for is to make it sleeper quiet . which i fanally think i have gotten . at least for me . loud just gives this old guy a headache and lets everyone know where you are.

[kdmranch]

does your car have the cats still. that makes a difference . i have 2 90s one fully ported with jeal headers and a custom exhaust its quieter than my wifes car that is stk with desert developement exhaust. the xpipe i found make alot of resonance unless one goes with one of the xpipe mufflers on the market . also removing the cats makes the car alot raspier. i have come up with a quiet exhaust for car with headers that doesnt cost any power at all . . here is what it is . 23/4 in to a 3in magnaflow xpipe muffler. 23/4 from there with a small balance tube right at the upturn(a 7hpimprovement on my car)to flowmaster 539712 70series mufflers . i cut off the factory tips and installed them on the mufflers so that it looked like a factory stk setup. we did a same day comparo on a chassis dyno in bakersfield . the car made 423.3hp and 371.6 tq with the desert developemt exhaust 3in and with this setup made 429.7hp and 377.2 tq with this setup. its a very quiet setup with just enough bark when @ full throttle to be heard . my buddy is working on putting in some perferated stainless to line the inside of the tipps to quiet it even more. what i have been looking for is to make it sleeper quiet . which i fanally think i have gotten . at least for me . loud just gives this old guy a headache and lets everyone know where you are.

Thanks for the input! Sounds like you've come up with a great combination for your car. The 91 has stock exhaust. The 90 has Watkins headers with corsa exhaust, no cats. I have a B&B system coming for my 91 with both the resonator and x pipe. I was hoping that I would be able to run the B&B system with the x pipe behind the stock exhaust manifolds and cats and still have a reasonable sound level in the car. I could tolerate a little more rumble than the 90 has with the corsa, but I dont want it to sound like a street racer either. I think that the resonator will be the way to go.

[Jeffvette]

What would the horsepower difference be on a 91Z with B&B exhaust if I were to run with a X pipe in place of the resonator? Car is stock with stock exhaust now. I have a 90Z with watkins headers and corsa exhaust, no X pipe, but the sides are tied together. will the 91 be louder with a B&B system with the X pipe and stock manifolds than my 90 is headers and the corsa? Thanks!!

Do you like the way your exhaust sounds with the watsons and the corsa system?

[kdmranch]

Do you like the way your exhaust sounds with the watsons and the corsa system?

Yes, I do like the header/corsa combination. I have never heard an LT-5 with the B&B system so I don't know what to expect.

[GOLDCYLON]

Yes, I do like the header/corsa combination. I have never heard an LT-5 with the B&B system so I don't know what to expect.

PAIN :mrgreen:

[Jeffvette]

It has a more muscular tone to it as opposed to the corsa which shrieks on the top end. I had the misfortune of driving a ZR-1 from Texas to Oregon with the old style B&B with headers and a X pipe. I would go to bed at night and I could still hear the exhaust and ringing in my ears. Before spending the money to go for a ride in a car with the system.

[kdmranch]

It has a more muscular tone to it as opposed to the corsa which shrieks on the top end. I had the misfortune of driving a ZR-1 from Texas to Oregon with the old style B&B with headers and a X pipe. I would go to bed at night and I could still hear the exhaust and ringing in my ears. Before spending the money to go for a ride in a car with the system.

I have a 69 Chevelle with the chambered exhaust behind an L-78 and I love the throaty rumble that it has, that is what I would like to get to with the B&B. But I sure as he~~ dont need my ears ringing at bedtime.
PAIN, no thank you!