you bought the muffler alone, and not the whole system?
I bought the whole system for mine, and the inlet opening for the muffler is much bigger in diameter than the oulet. The inlet was so much bigger that the system required an adapter for the muffler to fit on the headpipe. I also had 2 outlet's, so it was easy.
If the inlet and outlet are the same size, then I'm sorry, but I don't know what to tell you....maybe someone else can.
Sorry, should have gave more info. I have the Gibson Swept Side Kit - single 3in openings on each end of muffler. And yes, this system also has an adapter to connect the 3 inch Gibson to the 2.5 inch Ford headpipe. The Gibson installation instructions are great except for specifying the direction of the exhaust flow through the muffler.
MANDREL BENDING IS A PROCESS OF BENDING THE PIPE WITH OUT SHRINKING OR CRIMPING IT'S DIAMITER. IF YOU LOOK AT YOUR STOCK SYSTEM IT LOOSES ITS INNER DIAMETER AT THE BENDS THIS CAUSES UNEEDED BACK PRESSURE. AND THE POINT OF A PERFORMANCE EXHAUST IS TO FREE UP UNEEDED BACK PRESSURE. SO IN ANSWER TO YOUR QUESTION MANDREL BENDING IS BENDING THE PIPE WILL MAINTAINING EVEN FLOW.AND YES A SINGLE LARGER DIAMETER EXHAUST IS THE MOST PERFORMING.
IF YOUR MUFFLER IS A OFFSET MUFFLER THAN WHEN YOU LOOK INTO THE MUFFLER ONE SIDE WILL HAVE A SHORT TUBE WITH OPEN LOUVERS AND THE OTHER SIDE WILL HAVE A LONG TUBE WITH CLOSED LOUVERS. THE SHORT TUBE WITH OPEN LOUVERSIS THE INLET. GOOD LUCK!
dealgib, have the sweptside installed but did not check to see which side was which but the muffler had a side marked inlet should I have looked or are they all marked with a little stick on piece marked inlet and what diffrence will it maked putting it on wrong? thanks
------------------------- 99 SILVER XLT/REG.CAB/4.2/5SPD/3.55/K&N Airbox Mod/Gibson Sweptside/Westin Black nerfs and now SuperChiped
I'm no automotive engineer I'm in the medical field but don't you need some back pressure or else you loose some of your low end torque? If I'm wrong please correct me, I'm trying to learn. This is a great site for learning.
1999 Harvest Gold F-150 4x2 SuperCab XLT Styleside, 4.6, Auto, Air box Mods, Tow Pkg, Alarm, Snug-Top Hard Tonneau cover(painted to match), 6-disk Pioneer CD changer, Kenwood Tri-Band Ham radio (2m,440,220), Billet grille, Bug Deflector, Clear corner lights, tinted front windows.
Planned Mods: Cat back exhaust, Headers, Superchip, 2/3 inch lower.
My understanding is you will get some (enough?) back pressure from the Catalytic Converter and then a little more from even a "free" exhaust. I think.
97 F-150 SC Lariat, Styleside, White over Gold, 4.6L (Windsor), Automatic, 3.55 rear end, electronic 4X4, w/ every option of Lariat and ORP packages except the 17" wheels (I even got the OR decals now!) Almost completed the Towing Pkg. options, MOD's so far: K&N air box mod, Gibson Super Truck, clear Bugflector II, Leer TSC 600 hard cover, Bridgestone Dueler OWL ATP 265/75 R-16's, TrailMaster Invader N7 shocks, Smittybilt step bars, Ford moulded mud guards, "White-white" head lamps, Cloud Rider Design's SS Grill and bumper opening, Bosch Platinum + 4's, Hayden 30K+ Tranny Cooler, Superchip on the way!
MIKE150 IF YOUR SYSTEM WAS MARKED INLET OR OUTLETAND AND THATS THE WAY YOU INSTALLED IT THAN YOUR KIT IS FINE ON SOME APLICATIONS THE MUFFLER CAN BE ROTATED FOR A DEEPER SOUND. BUT THE WAY YOU INSTALLED YOURS IS PROPER FOR OPTIMAL PERFORMACE.
GOLDIE-YOU ARE CORRECT YOU DO NEED BACK PRESSURE FOR LOW END AND TORQUE PERFORMANCE THIS IS MAINTAINED THREW THE MUFFLER AND CAT. PRESSURE AFTER THE MUFFLER IS NOT NEEDED AND IS A BURDEN ON PERFORMANCE THAT IS WHY A MANDREL BENT TAIL PIPE ASSEMBLY IS BEST FOR PERFORMANCE IT ALLOWS A FREE FLOW AFTER THE MUFFLER.OUR SYSTEM TAKES A STOCK BACK PRESSURE OF 66% FLOW WITH 34% RESTRICTION TO A 95% FLOW WITH A 5% RESTRICTION. THIS IS OPTIMAL FOR LOW AND MID RANGE PERFORMANCE. REMEMBER IF THIS HURT YOUR SYSTEM AT ALL IT WOULD NOT COMPLY WITH A MANUFACTURERS VEHICLE WARRANTY LIKE IT DOES.
CPHILIP YOU ARE ALSO 100% CORRECT UTILIZING THE STOCK CONVERTER AND OUR PATENTED MUFFLER PREMIUM PRESSURE IS PROVIDED.
THANK YOU EVERYONE FOR YOUR COMMENTS THEY WERE ALL GOOD QUESTIONS.
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