Well I did it the other day. I took my 40 series delta flow off of my truck and just put a Y pipe in. Holly cow what a difference. It sounds the way that a truck should sound. You hear it a little more from inside the cab but it is sooooo much better.

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Dedicated to Dale Earnhardt, Gone but not Forgotten......

• -1999 Ford F-150 Supercab Flareside ORP
• -4.6 Liter V-8, Auto, 3.55 LS Rear
• -Deep Wedgewood Blue
• -Flowmaster Delta Flow Series 40 single 2.5" inlet w/dual 2.5" outlets
• -Two 18" Adcar Stainless Steel Exhaust Tips
• -Airforce 1 Performance Intake
• -Lund Lighted Moon Visor (painted)
• -Lund Interceptor Bug Guard (painted)
• -Deflecta-Shield Window Rain Guards (painted)
• -Delecta-Shield Slotted Tail Light Covers (painted)
• -Manik Grille Guard
• -Ford Factory Cab Steps
• -Extang Soft Bed Cover
• -Ford Lighted Ovals Front and Back
• -Tinted Windows (5% totally illegal)
• -Pioneer P725R CD Player w/Flip Face Head Unit
• -Superwhite Headlight Bulbs (from Online Store)
• -K&N Air Filter
• -Air Box Silencer Removed
• -Tail Light Modification
• -Lots of Blue Wire Loom Under Hood
• -Cranked Torsion Bars to Level Truck Out

In Loving Memory of Craig W. Menth Sr.



http://njf150truckclub.homestead.com/index.html
www.my-f150.com/steveo
steveo@f150fanatic.com

 

Did you take it to a shop to take off the muffler and put a piece of exhaust in its place? I have been thinking about taking the muffler off... neglecting the fact that i may loose a little backpressure and police discretion.
I have been wondering if a valved Y-pipe could be installed directly before the muffler. with the Y-pipe splitting off to either the muffler (stock setting) and the other simply bypassing the muffler. You could go back into the exhaust after bypassing the muffler, but it's almost pointless.
By the way. do you have any wav files of the exhaust? Thanks

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1999 F150 4x4 5.4L XLT X-Cab, Tow Pkg, ORP,heavy duty alternator, factory tranny and engine oil cooler. 8.8 front/9.75 LS rear, 3.55 gears, K&N Gen II, 40 Flomaster (w/4" chrome tip), Superchip, 32x11.50 Swampers. My truck: http://www.tamor.org/membersandrides/joelclarke.html
future mods: JBA headers (Jet-hot coated), Flex-a-lite, JL Audio subs, Sony CD-Player, Magnacharger, cowl induction, straight axle conversion (8 inch lift w/crossover steering), 4.56 gears, 38.5x16 Boggers, Dana 60 front, Dana 70 rear (Detroit locker)

 

I had the shop do it. The shop told me that these trucks really don't have that much back pressure. I have not lost any low end power at all the truck seems a lot better. No wave files as of this posting. You will not be disappointed. It is loud but not to loud, passed some cops and never even turn ed there heads. -steve