Flow masters

Chevy#1

New Member
Joined
Jan 15, 2014
I just installed a flow master exhaust system on my silverado it is a duel exhaust I've heard things about new exhaust systems improving the power or somthing like that is this true?
 
Higher flowing exhaust with a higher flowing air filter/intake can help improve power and fuel mileage. Think of your engine as a big air pump. The easier it is to move air, the more efficient it will be. Alot of times, the benefits of an aftermarket exhaust are negated by the drivers wanting to hear the exhaust and being less liberal with the skinny petal, thus ending up with less fuel economy.
 
You won't really feel "seat of the pants" horsepower increase just be installing flow masters.

Like the Sgt. said, Think of the engine as an air pump. But I'll add that the exhaust can only put out as much air as the engine can suck in. did you do anything to the air intake as well? and when you say a "flow master exhaust exhaust system" are you talking from Exhaust manifolds to Tail pipes? or you put on some flow master mufflers?
 
Yea it's straight from the manifolds and I haven't done any thing with the intake do u have any suggestions?
 
I have always felt that Flowmasters were more for sound rather than performance, not saying that dont help at all but....the exhaust going through all those chambers VS. something like a magnaflow where it s a straight through design.....just my .02
 
Cherokeekid88 said:
I have always felt that Flowmasters were more for sound rather than performance, not saying that dont help at all but....the exhaust going through all those chambers VS. something like a magnaflow where it s a straight through design.....just my .02
Click to expand...

From what I understand it all depends on your setup and what you wanna do. A more free flowing system, less back pressure gives you more power in the higher rpms while a more restrictive system like a chambered one gives your more torque in the lower rpms. I am not an expert, just what I've been told.
 
Today's vehicles are tuned pretty damn close to best your going to get MPG wise, with all the cafe standards etc, it's important for automakers to squeeze every mile.
 
Bogleparsons said:
Today's vehicles are tuned pretty damn close to best your going to get MPG wise, with all the cafe standards etc, it's important for automakers to squeeze every mile.
Click to expand...

This.

If GM could have gotten better MPG out of one by just using a different muffler, don't you think they would have jumped on that?

I mean, Ford is building an aluminum F150 just to get a little bit better fuel economy.
 
mbalbritton said:
You won't really feel "seat of the pants" horsepower increase just be installing flow masters.

Like the Sgt. said, Think of the engine as an air pump. But I'll add that the exhaust can only put out as much air as the engine can suck in. did you do anything to the air intake as well? and when you say a "flow master exhaust exhaust system" are you talking from Exhaust manifolds to Tail pipes? or you put on some flow master mufflers?
Click to expand...
I agree its an air pump.... Here is where i have a different view on a fuel injected more. The o2 sensor will always adjust the fuel to get the correct air fuel ratio, so more air in and out also requires more fuel.
 
Unless you are changing something inside the engine that requires more air (maybe programming at the very least), all an aftermarket intake or exhaust will do is make noise.
 
No exhaust system will make more power. At best an exhaust system will rob less power. If your current system isn't robbing power, then an exhaust change will not help.

And yeah, snappy nailed it.

Mpg is pretty optimized as stated above....you can get a little more dyno number out of less restriction on the intake side easier than on. Exhaust. In my experience with new stuff.
 
Back
Top