Go Back   F150online Forums > Powertrain & Mechanical > Exhaust & Intake Systems
Sign in using an external account
Register Forgot Password?
Register Photos Vin Decoder FAQ Members Search Today's Posts Mark Forums Read VendorsGarage

Exhaust & Intake Systems SPONSORED BY:




Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-11-2009, 06:23 PM
Member
Garage is empty, add now
 
Join Date: Feb 2009
Location: iowa
Vehicle: 2008 ford f150
Posts: 78
08 f150 straight pipes?

im wanting to put dual square tips in front of the back passenger tire without a muffler. now will i lose hp or mpg, will it be stupid loud, anyone done this? any thoughts or suggestions would be appreciated. thanks
Reply With Quote
  #2  
Old 02-11-2009, 06:25 PM
Member
Garage is empty, add now
 
Join Date: Feb 2009
Location: iowa
Vehicle: 2008 ford f150
Posts: 78
it has a 5.4 and its a supercrew that might help
Reply With Quote
  #3  
Old 02-11-2009, 07:57 PM
Member
2004 Ford F-150
 
Join Date: Apr 2008
Location: Ft Myers, FL
Vehicle: 2004 FORD F150
Posts: 43
I just did it with my 4.6 2007..Yes I lost mpg, Yes I lost HP, Yes it was loud as SH%T...I ended up sticking a muffler on there and routed it out the side..Sounds bearable and gained some hp and mpg..(not much)
Reply With Quote
  #4  
Old 02-11-2009, 11:45 PM
Technical Article Contributor
2007 Ford F-150
My Garage
 
Join Date: Mar 2008
Location: Mansfield, P.A.
Vehicle: 2007 Ford F-150
Posts: 15,263
100000407687965 darrenws6
Send a message via AIM to DarrenWS6 Send a message via Yahoo to DarrenWS6
You'll have a minor loss and minor mpg loss.
__________________
2007 Ford F-150 Lariat Supercrew 5.4L 4x4

Exterior: PTM handles/bumpers/mirrors, Harley Davidson grill, PTM Leer 700, 3M 5% tint, Glossy pillars
Interior: Black leather, Audiophile, Weathertechs
Drivetrain: 3" Magnapack SI/DO, PHP Gryphon 93oct, PowerSlot Rotors, Hawk LTS pads, 20" XD Monsters 295/60-20 Nitto M/Ts, Rancho Quiklift/RS9000XL, Moog BJs
Reply With Quote
  #5  
Old 02-12-2009, 12:43 AM
Senior Member
1998 Ford F-150
 
Join Date: Jun 2006
Location: Huntsville/Cypress, TX
Vehicle: 1998 Ford F150
Posts: 2,970
Send a message via AIM to MmmBuckles
i have straight pipe out the side lightning style. i didnt lose any hp or mpg. and it sounds great
__________________
Reply With Quote
  #6  
Old 02-12-2009, 11:56 AM
Senior Member
Garage is empty, add now
 
Join Date: Aug 2008
Location: Columbus GA
Vehicle: 2007 Ford F-150
Posts: 209
Send a message via AIM to eckomaninred Send a message via Yahoo to eckomaninred
I did the same thing to my 07 before I installed my turbo. I dont know about the MPG, or HP losses, but it was WAY too loud. I had a magnaflow strait through muffler too. I would get head aches driving to work and on road trips. It WAS fun to be on the high way with some one right next to you with their window down and just mash it, but other than that I dont think it was worth it. It looked really good, just too dang loud.
__________________

'07 F-150 FX2 Sport 5.4 3v
STS Turbo Kit (61mm Garret, Intercooled)
MODMAX Forged Crank, JDM Fuel System
Manly Rods, Manly 18cc dished pistons
Groundforce Supension, 4.10 Gears, Built Tranny
Reply With Quote
  #7  
Old 02-13-2009, 11:05 PM
Senior Member
Garage is empty, add now
 
Join Date: Jan 2008
Vehicle: 2008 Ford F-150
Posts: 1,253
yeah, i got headaches when mine was straighpiped... granted I just unbolted the stock muffler and left it. I went down to I think like 10 mpg city... but I had no backpressure, which is basically all you need to keep the mpgs and power. I put a flowmaster 50 series SIDO at 45 degrees out the back. If you run the pipes out the back I believe you would get more backpressure that was, b/c of more piping.
__________________
Reply With Quote
  #8  
Old 02-14-2009, 02:09 PM
Member
Garage is empty, add now
 
Join Date: Feb 2009
Location: iowa
Vehicle: 2008 ford f150
Posts: 78
shouldnt the cats provide plenty of backpressure? i dont get why removing the muffler would cause loss in hp or mpg.
Reply With Quote
  #9  
Old 02-14-2009, 02:22 PM
Senior Member
1998 Ford F-150
 
Join Date: Jun 2006
Location: Huntsville/Cypress, TX
Vehicle: 1998 Ford F150
Posts: 2,970
Send a message via AIM to MmmBuckles
Quote:
Originally Posted by PCBC View Post
shouldnt the cats provide plenty of backpressure? i dont get why removing the muffler would cause loss in hp or mpg.
yes the cats provide plenty. taking the muffler off is not gonna make a noticeable difference in mpg or hp. the reason most people see a drop in mpg is cause they cant keep their foot out of it because of the new sound.
Reply With Quote
  #10  
Old 02-14-2009, 03:32 PM
Suspended
Garage is empty, add now
 
Join Date: Sep 2004
Location: Arizona
Vehicle: 2007 Ford F 150
Posts: 842
Send a message via AIM to alomar
I have my muffler hacked out and exiting lightning style also. The sound is really personal preference. It is VERY loud, but I personally love it. Never gets old, dont bother me, and I love the drone. On the other hand, my mom hates it.

http://s99.photobucket.com/albums/l2...raightpipe.flv
Reply With Quote
  #11  
Old 02-14-2009, 04:57 PM
Senior Member
Garage is empty, add now
 
Join Date: Jul 2008
Location: Chicago IL
Vehicle: 2004 Ford F-150
Posts: 964
Send a message via AIM to Eff One Fifty
im not a fan of the sound, its very easy to obtain on an old car too you just wait for the muffler to rot out. thats all i think about when i hear it. To each his own but i like it loud but i like it to have a nice tone to it too. you lose all nice tone when you have it hacked off in my opinion.
__________________

ROLLING ON 40's~~Airbags on there way!
Reply With Quote
  #12  
Old 02-14-2009, 05:59 PM
Technical Article Contributor
Garage is empty, add now
 
Join Date: Nov 2008
Location: Oregon
Vehicle: 2006 Ford F150
Posts: 785
Send a message via Skype™ to brianjwilson
I think straight pipes sound like crap also. Reminds me of an old rusted out POS. Makes me think of the equivalent of a honda civic with a huge coffee can muffler on it. Lots of noise, no performance.
Plus you will lose low end torque by losing a lot of back pressure. And you're going to annoy the **** out of everyone who has to listen to the truck. Stuff like this is the reason why more and more places are requiring vehicle inspections.
Have a system put together with a decent sounding muffler and call it good.
Reply With Quote
  #13  
Old 02-14-2009, 06:24 PM
Suspended
Garage is empty, add now
 
Join Date: Sep 2004
Location: Arizona
Vehicle: 2007 Ford F 150
Posts: 842
Send a message via AIM to alomar
Quote:
Originally Posted by brianjwilson View Post
And you're going to annoy the **** out of everyone who has to listen to the truck.
That's a negative?

Personally I know more people who love the sound of my truck than hate it. But to each their own. Some people like fart cans on honda's, some like magnaflow, some think their chit dont stink. It makes the world go round.
Reply With Quote
  #14  
Old 02-14-2009, 06:55 PM
Senior Member
Garage is empty, add now
 
Join Date: Jan 2008
Vehicle: 2008 Ford F-150
Posts: 1,253
to each his own... Take into consideration you won't have that "performance tuned" sound. And at low speed when you punch the gas, it will sound like bullets shooting off... My buddy has true dual straight pipes running straight out the back on his '03 5.4.... it sounds nice when he cranks it, but like I said, when he takes off it sounds like a loud pop gun. On the other hand, another guy that has an '08 or '07 5.4 on campus is straightpiped and sounds NICE when hes cruising.
__________________
Reply With Quote
  #15  
Old 02-14-2009, 06:56 PM
Senior Member
Garage is empty, add now
 
Join Date: Dec 2007
Location: SoFo, Georgia
Vehicle: 2004 Ford F150
Posts: 669
shouldnt this thread be in the exhaust forum?
Reply With Quote
Old 02-14-2009, 06:56 PM


 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -4. The time now is 11:05 AM.


 
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company
Contact Us Advertising Privacy Statement Terms of Service Jobs Forum Text Archives
Emails & Contact Details

Search Engine Friendly URLs by vBSEO 3.5.2