I own a 93 F-150 and havve been looking to increase horsepower, gas milage, ect. Ant a great friend refered me to a Flowmaster exaust system, and i was wondering is it really worth it? And if so what kind:Super 40, 70 Series, 50 Series Delta Flow, 50 Series, or a 40 Series Delta Flow. It is all so confusing. Please Help

(oh and i dont want to spend too mutch money)

 

Well just to let you know, flowmasters are about $80+ a piece.

 

No! Your Truck Probably Has A Large Cat Conv And The Flowmaster Will Make Little Difference. I Think They Are Overpriced And Poor In Quality. I've Had Two Crack At The Spot Welds On The Case. If You Want A Performance Tone, Consider A Magnaflow In Polished Stainless ($60)

 

Unfortunately Flowmaster is just for sound, I put a 40 series with two 3 inch exits to the back of the truck behind the cat and no difference in power or gas mileage, maybe with some serious engine upgrades I might notice something, but for now all I have is a nice sound. Ford mufflers are known to be restrictive, but maybe for a stock moter they do the job fine. If you want to increase horsepower and increase gas mileage, get a superchip or a diablo chip, they increase power greatly and if you keep your foot out of it, the gas mileage will increase.

 

I have a 93 250 4x4, i got 10 mpg towing or not, i put a custom 2 1/2 back from cat. without muffler and added a K&N filter replacment and improved to 13MPG. Not a big increase, but every little bit helps

 

A catback system wont give you that much of an increase, but they do sound mean. It is what you do to the other end of the exhaust system that will give you increased performace. Things like headers, high flow cats, and H or X pipe. That coupled to a good catback system will give you the best increase in performace.

 

Yep- have a flowmaster underneath my '93, and noticed zero difference in performance or mileage. Sure sounds kewl though.

 

I ahve always had the best luck going to my local muffler shop and telling them waht I am looking for. I do not mean Midas, a real muffler shop. I have always got exactly what I wanted and installed for the price of odering something like Flowmaster. That is talking the whole system.

 

Wow that really helps! Thanks everyone!!!

 

I have a 95 150 with a 302. I installed Flowmasters 3" cat back single side exhaust. The system bolted right on and lined up very well with the stock mounts which I appreciated. The kit, which cost me $180 came with all it needed to install and a 70 series muffler. I did not notice any power increase until the truck got into much higher rpms, high enough that I rarely if ever drive it that hard. It sounded "OK", not nearly as loud as I was hoping. The 70 series is the quietest muffler Flowmaster offers. I just recently removed the muffler and replaced it with a straight pipe. The exterior noise is now much more satisfying and the interior noise has toned down a bit. With the 2 stock cats it is much more quiet than I would have expected for having no muffler. With the muffler removed, I noticed that power gains at a much lower rpm and the truck feels as if the higher it revs the more it wants to go, it pulls very well now. The highway driveability has increased as well, it does not downshift nearly as often when going up hills, it can pull through in overdrive. I'd go 3", single side, no muffler, worked well for me.

 

Yea this 2-Cat system on trucks really keeps the sound in.

 

I have a Flowmaster 50 on my F250 and a Flowmaster 40 on my F150. The gas mileage has not changed, and I have not noticed any increase in power.

 

I got a 96 f 150 302 auto I under ssrandys advice put a K&n filter in the original bo42.00) then bought a air intake from a 460 f250 and put it on it comes out beside the radiator and gives alot more air flow(14.00 at dealer) then I got a Magnaflow XL muffler and just spliced it in my original exhaust(57.00) I have noticeable more power and gained at least 3 mpg. My truck gets 17 on the highway and this is in the winter. Just a thought for you but it is fairly cheap and easy upgrade and it does help..

 

Which is better true duals or a cat back system with two pipes?

 

i would say true duals is the way to go. i would also say that unless your putting headers on, don't wast your money on an exhaust upgrade. the stock manifold, cat, and muffeler are all restrictive. so you need to get rid of all the bottle necks. just another persons opinion