meckeard

All,


I believe I have dual exhaust on my car. If so, would a Y pipe be useless? Wouldn't it be more restrictive since the exhaust would be going to a single "lane" using the y pipe?


Thanks.

TechCam97

iTrader: (5)

Why do you believe that you have dual exhaust? A true dual setup and a nice y-pipe setup will flow fairly similarly. Most people have not noticed any big gains with going with a true dual setup over a y-pipe. The deciding factor for many people (myself included when I had my old Z28) was the sound of the true duals versus the y-pipe. True duals on our cars just sound heavenly.

meckeard

I bought an 02 Firehawk and read that SLP added true dual exhaust. Car is being shipped but it's 100% stock. That's why I say that.


I'm asking because I am looking at my first mods and I see y pipes as being common and was wondering if this is something I would skip if I had dual exhaust.

Mike TA

iTrader: (6)

If you have true dual and wanted to keep true dual you would not buy a y-pipe. That being said, if nothing has been altered on the car I dont think it has true duals. I am not aware of any set up that came from the factory with a true duall exhaust, even the SLP cars.

HCI2000SS

iTrader: (2)

Being shipped by whom? Have any pics of the exhaust?

TechCam97

iTrader: (5)

If it's factory, then it is not a true dual setup. All fourth gens came with a y-pipe from the factory, even SLP cars. What they were probably referring to is a dual outlet exhaust, which would be true.

meckeard

No pics of the exhaust. I'll have the car tomorrow and will check. I could've sworn I read it had true dual exhaust all the way back but maybe I misread.

RPM WS6

iTrader: (3)

Not unless someone has modified the exhaust since original delivery. As stated above, no 4th gen F-body came from the factory with true dual, ever, not even SLP cars (such as Firehawk/SS) had this as an option.

So if the car is 100% stock as you state, then it has a Y-pipe setup and the biggest restriction here are the stock manifolds, not the Y-pipe. Many/most LT headers come with aftermarket Y-pipes (cats or no cats) since the stock one won't fit with LTs.

As also mentioned above, going to true dual is really more about sound than power. A good Y-pipe setup will make about the same power, but will never sound as good as true dual. Y-pipes sort of sound like a Kazoo on crack when the cats are deleted and a loud muffler is used, true dual setups don't have this problem. To get a catless Y-pipe setup to sound good, you have to be considerably more mindful of muffler selection.

RevGTO

iTrader: (12)

You are confusing a "dual outlet" exhaust with a "true dual" exhaust. As stated above, our cars had the former with a Y-pipe, not the latter. It means that there are two tailpipes exiting from a single muffler.