Just wondering if anyone could give me the scoop on a MAC Prochamber as far as how it effects mileage, horsepower and if having no cat. converters gets your exhaust tips and rear fascia sooty alot. Thanks

 

no cats mean more flow, more exhaust fumes, and black goodness, and its bad for the enviroment.

 

having no cats probably will net you 2hp more than high flow cats......get the cats, it's better for the environment.....and if your ever pulled over for exhaust they will see the cats and you'll be good to go. Also, I'm pretty sure Mac doesn't make the prochamber with cats anymore. Not sure why they stopped making them, but I've heard this from people on several different boards.

 

heard from my local shop prochamber is best power producing midpipe they use. but also heard mac = k-mart brand performance parts.

 

I don't know about the power part of it, but I was worried about buying a mac product, but I have to say my prochamber is great.

 

I got the prochamber off AM and couldn't be happier. My mileage increased (although I got the car dynotuned last week and I was running 18+ A/F ratio!!!!!) Even after the tune, my mileage is still a ton better. I also noticed that the car coasts a lot better now than it did with the 6 cats. Before it'd slow down VERY quickly as soon as I let off the throttle. Now I can coast quite a ways without having to constantly tap the throttle or be in throttle to go anywhere. I do have to say though, I've made 3 50+ mile trips @ about 70mph each and my ears kinda ring after the trips due to the 3.73's + no cats.

 

[QUOTE=Dusstbuster;259944]I got the prochamber off AM and couldn't be happier. My mileage increased (although I got the car dynotuned last week and I was running 18+ A/F ratio!!!!!) EQUOTE]

oh my god 18+ A/F ratio....so how long was the car running that lean before you got a tune?