I recently purchased a '10 XLT with the 4.6 3V. I read and read here and on the other F150 forum on adding some sound to my truck and I concluded adding a 12" 2.5"diameter Dynomax bullet to the stock system would be a safe and relatively inexpensive way to do this.I contacted a good friend that installs exhausts and he stated that Ford engines like backpressure and the bullet would indeed increase sound but would kill some performance. I greatly value his opinion on this but I would like different thoughts on this.Help me out,please !

 

Im not an expert but as long as your still running your stock piping size and the stock y pipe you should have sufficient back pressure if thats a concern for you. But then again if it did totally kill back pressure how much loss of power are you really looking at losing here, probably a minute amount to really make any difference. I dont know much about the newer engines design so maybe someone else who does will chime in. Hope this helps

 

Read this and stop talking about backpressure.

 

^^Very useful article there!

 

Spread the word!

 

you will have 0 issues.

 

long read but very good info in there!

 

Every new person should be required to read that before posting in the Exhaust/intake section.

 

Thank you for the advice.

 

Maybe a Sticky with 'The Exhaust Guide' ?? That would cover up about 98% of all questions asked here.

 

^ It already is a sticky.

 

I know that, but I was talking about making the ''myth of backpressure'' a sticky .. just as the exhaust guide is... but I just checked and the myth of backpressure is already in the exhaust guide thus making another sticky for that is pointless.

 

^ Oh. Ya that is also a good idea.

 

Well, I took the bullet and went and talked to my friend/installer today and he talked me into putting in a Flowmaster Super 44 instead. He will install it next week.

 

weak