Am going to purchase a gibson catback soon and wanted to know if anyone did a muffler replacement first and then the gibson and what kind of diffrence was there?

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------------------------- 99 SILVER XLT/REG.CAB/4.2/5SPD/3.55/K&N Airbox Mod/Rhino muffler/Westin Black nerfs and now SuperChiped

 

mike150. I installed the gibson 3" cat-back first then I changed the muffler. I noticed when I changed the muffler I lost some low end power. The gibson was great but a little to quite.

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99 F-150 XL 4x4. RC Flareside 4.6 5spd, 3.55LS. gibson 3" cat-back, K&N Gen ll.Westin step bars.Ventshade window deflectors and bug deflector and a cool white shifter ball. The SILVER BULLET. Rock and Roll...Baby!!!

 

Henry,

What muffler did you use to replace the Gibson?

 

Thanks Henry Ellal.The muffler I have on it sounds very good on the 4.2 and flows well but would like to get some more low end grunt.

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------------------------- 99 SILVER XLT/REG.CAB/4.2/5SPD/3.55/K&N Airbox Mod/Rhino muffler/Westin Black nerfs and now SuperChiped

 

cruzer. Used a muffler from summit racing equipment, #sum-630330. has a little drone at certain rpm's but it does sound good. the slight loss in low end torque was worth it.

Henry

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99 F-150 XL 4x4. RC Flareside 4.6 5spd, 3.55LS. gibson 3" cat-back, K&N Gen ll.Westin step bars.Ventshade window deflectors and bug deflector and a cool white shifter ball. The SILVER BULLET. Rock and Roll...Baby!!!

 

Henry,

Thanks for the info. I have a 3" Gibson and I'm planning to change the muffler. The performance is good, just not enough rumble.

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'99 F150 XLT,Wedgewood Blue, 4.6 V8, SC, Penda liner, K&N filter,
Superchip, Gibson 3" stainless single

 

I am looking into a Gibson cat-back also. I was wondering if anyone has put on the dual-sport truck and does it work with the 1999 supercab 4x4 w/ORP? Someone told me I might have problems installing it. Can someone help me? Thanks...

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Todd in Alaska

1999 F-150 4x4 Lariat, SuperCab, Amazon Green/Harvest Gold, Off-Road Pkg, 5.4L, 3.73 Limited slip, Towing Pkg, and every other option possible... K&N filter, Ventvisor Vents, Bugflector II, Extang Platinum Soft Tonneau

Future Mods: Gibson exhaust, SuperChip, Smittybilt Outland Grill Guard, Smittybilt Sure Step Nerf Bars, Lund Moonvisor