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I have been shopping around for a new exhaust system. It has proved to be a lot more expensive and risky than I thought. I want one that will make my Ferrari sound like a Ferrari.(Loud and robust, without sputtering)

I had a used Ansa system on from my mechanic, but it had a whole on the bottom. It just did not sound good at all. I have since put it back to stock. Can anyone suggest anything? Cusom fabrication???
 

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Everyone uses Tubi for some reason. Borla is another excellent exhaust that you can get for a lot of Ferraris but I'm not sure how much performance they add. I would guess anywhere from 20-50bhp. I'm not familiar with Ansa, are these performanc exhaust?
 

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I have a Borla stainless steel header and exhaust system on my Jeep CJ-7 and it is awesome! Much more performance than the stock exhaust but not loud like other perfomance exhausts for the 4.2 liter I-6. It has a nice low, mellow tone.
When the time comes to change the exhaust on the Ferrari I will try and get a Borla!
 

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Hey, BCI, Why don't you have a local muffler shop make you up a system of pipes and hangers using 2 flow master mufflers. They are found in Pep Boys etc. That way you have 2 independent pipes coming off the headers and 2 seperate exhausts. Then you can purchase 2 dual pipe extensions to fit on each side where they come through the rear valance. Once you pull that orig. muffler and pipes out of that cavity you have plenty of room to work with.
 

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My 1976 308 GTB came with an Ansa muffler installed. The original OEM muffler was given to me separately.

The Ansa has a nice sound and nice dual chrome tips. I understand that many owners replace their aftermarket muffler tips with the Ansa tips. The Ansa tips for Ferrari are not prone to surface rusting as other Ansa systems are notorious for. My Ansa system has been in place for 15 years and there is no sign of rusting of the tips. The black paint on the muffler is prone to peeling in the center of the muffler secondary to heat. This would ordinarily not be an issue in the 308s with the baffle valance covering the muffler, but my early GTB has the three-piece rear valance without the black baffle. The higher positioning of the Ansa exhaust tips in comparison with the OEM muffler necessitated the removal of the center portion of the valance. This exposes the muffler like on the 365 GT4 BB Boxer. I purchased an excellent high temperature black paint from Hirsch Auto to make the muffler more presentable.

Barry
 

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Magoo said:
Hey, BCI, Why don't you have a local muffler shop make you up a system of pipes and hangers using 2 flow master mufflers. They are found in Pep Boys etc. That way you have 2 independent pipes coming off the headers and 2 seperate exhausts. Then you can purchase 2 dual pipe extensions to fit on each side where they come through the rear valance. Once you pull that orig. muffler and pipes out of that cavity you have plenty of room to work with.

Could you explain more on how to do this? For example, which flowmasters should I use? My fear is I'll go to a local shop and get the deer in the headlight look.
 

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FerrariGuyHI,
I'll let Magoo correct my errors, but I believe what he is talking about is a true dual exhaust versus a Y pipe. You'll sometimes see cars with two mufflers at the end rear bumper but under the car they connect to one pipe that then connects to the engine's exhaust port. A true dual exhaust never shares pipes with the other. So for a V8 4 of the cylinders have one exhaust pipe all the way to the back with a muffler, and the other 4 cylinders also have their own seperate pipe. This will of course improve you airflow out of the car, now you just need to pump more air in (better intake, etc) and you'll really improve your performance.
 

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Ferrari's exhaust layout is determined by the firing order of the engine. Since it uses a 180* crankshaft, the engine has alternate-bank firing (a perfect LRLRLRLR....). It esentially is two four-cylinder engines, so each header can be independant and is. This is what Magoo is suggesting, a narrow muffler connected to each manifold. Simple and clean.

American V-8's however use 90* crankshafts and their firing order is unbalanced (LRRLRLLR....). This results in an uneven exhaust pulse and the fix for that is a "Y","H", or a "Crossover" pipe. This allows the flow from one manifold to help scavenge the exhaust gases from the other and maintain an overall smooth flow. You can run independant pipes like you mention Andrew, but it'll be better if you have that crossover pipe.

(*= degrees. The position of the con-rod throws/pins when viewing the crankshaft dead-on its nose)
 

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308 dual Flowmaster

I did the two seperate 2inch flowmaster with 2 inch pipe and some oval stainless tips I found at one of those aftermarket rice rocket stores. The system is simple and sounds great. Costs about $500 total and took about 6 hours at the muffler shop . RC
 
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