1994 Mufflers

[jeasen]

I want to upgrade the exhaust on my 1994 ZR1. My first thought was Corsa, but after reading a report on the 1994 exhaust system by Haibeck Automotive it appears that the bottle neck in the 1994 factory exhaust is the mufflers. Only 1 psi difference across the cats, no difference in pressure across the resonator, but 4 psi increase in front of the mufflers. A Corsa system would not do anything for the difference in pressure across the cats, and there is nothing wrong with the resonator. So maybe just a muffler change??

Anyone know of a non restrictive replacement muffler for the 1994 ZR1? It appears the the diameter of the pipes leading to the factory muffler is 2 3/4". The LT1 mufflers are 2 1/2" or 2 1/4" and would be no improvement over the stock ZR1 mufflers.

There is nothing wrong with my exhaust system I just want to add a little more performance.

I guess I could just remove the mufflers and replace them with a straight pipe but I am concerned about the noise that would make?

Anyone have any suggestions or thoughts on this?

[jonszr1]

you might go look on the corvette action center , and see what hib halverson put on for mufflers. i believe they were 3 chamber flowmasters

[Kb7tif]

Originally Posted by jeasen

I want to upgrade the exhaust on my 1994 ZR1. My first thought was Corsa, but after reading a report on the 1994 exhaust system by Haibeck Automotive it appears that the bottle neck in the 1994 factory exhaust is the mufflers. Only 1 psi difference across the cats, no difference in pressure across the resonator, but 4 psi increase in front of the mufflers. A Corsa system would not do anything for the difference in pressure across the cats, and there is nothing wrong with the resonator. So maybe just a muffler change??

Anyone know of a non restrictive replacement muffler for the 1994 ZR1? It appears the the diameter of the pipes leading to the factory muffler is 2 3/4". The LT1 mufflers are 2 1/2" or 2 1/4" and would be no improvement over the stock ZR1 mufflers.

There is nothing wrong with my exhaust system I just want to add a little more performance.

I guess I could just remove the mufflers and replace them with a straight pipe but I am concerned about the noise that would make?

Anyone have any suggestions or thoughts on this?

Headers. You will like them. A bit loud though.

[secondchance]

I don't know whether it's the muffler design or the pinching of pipe as it connects to the factory muffler.
I personally like the 92 and later factory muffler tips. I think Corvette Central carries Magnaflow mufflers and it looks like it retains factory style tips (a wide black rectangular tip).
Does anyone had experience with Mangaflo?

[ZZZZZR1]

Originally Posted by Kb7tif

Headers. You will like them. A bit loud though.

Negative.... That is the sound that an LT5 should sound like!





David

[1990 415]

Definitely go with headers and straight pipe. I have this on both of my ZR-1s and it sounds awesome. Straight pipe gives the sound of a serious performance sports car.

[902066]

Originally Posted by 1990 415

Definitely go with headers and straight pipe. I have this on both of my ZR-1s and it sounds awesome. Straight pipe gives the sound of a serious performance sports car.

Lets here a sound clipp of one of your cars, for those of us thinking of going this route. Please

Originally Posted by 902066

Lets here a sound clipp of one of your cars, for those of us thinking of going this route. Please

You'll have to show up at BG, he is internet impaired.

[32valvZ]

Originally Posted by jeasen

I want to upgrade the exhaust on my 1994 ZR1. My first thought was Corsa, but after reading a report on the 1994 exhaust system by Haibeck Automotive it appears that the bottle neck in the 1994 factory exhaust is the mufflers. Only 1 psi difference across the cats, no difference in pressure across the resonator, but 4 psi increase in front of the mufflers. A Corsa system would not do anything for the difference in pressure across the cats, and there is nothing wrong with the resonator. So maybe just a muffler change??

Anyone know of a non restrictive replacement muffler for the 1994 ZR1? It appears the the diameter of the pipes leading to the factory muffler is 2 3/4". The LT1 mufflers are 2 1/2" or 2 1/4" and would be no improvement over the stock ZR1 mufflers.

There is nothing wrong with my exhaust system I just want to add a little more performance.

I guess I could just remove the mufflers and replace them with a straight pipe but I am concerned about the noise that would make?

Anyone have any suggestions or thoughts on this?

You will never notice a performance difference by changing mufflers on any car. Sound difference, yes, but not a noticeable SOTP feel. Listen to us and bolt on some headers and then a nice Corsa or B&B cat back system. Youll have performance along with the sound improvment.

[1990 415]

Originally Posted by Jeffvette

You'll have to show up at BG, he is internet impaired.

I take that personally - even if it is true

I will have my 415 with straight pipes at BG in May. I'll be glad to give you an earfull. I detest mufflers on a ZR-1.