After Reading posts in the Pickup Forum it sounds like the MagnaFlow muffler replacement on the stock tubing is the answer for me. I am leaning toward the 20" long 4" diamer inlet/outlet stainless steel. I am worried about this "Drone" everyone talks about. My goal is to allow my truck to breath better but I don't care for the extra sound. I want to keep it simple (and cheap) with just a muffler replacement and no other mods to the exhaust. To you guys with MagnaFlows on the Excursions only, what is the sound like? Any drone (flutter) inside with windows up? Thanks.
Cliff, I believe the drone is taken care of by a flex connector, http://www.epiflex.com/ and has little to do with the muffler, my 2000 x had the drone a lot worse with the stock exhuast then my 2002
mike
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2002 Excursion LTD(PCM:NQW5)Pheltech Tru-Cowl Induction Hood BTS transmission ITP fuel system, 38/15.5/20 Toyo's on Weld 12" wide wheels,15k warn and warn 9.5k rear 4:56's ARB air lockers front and rear. Trail ready front bumper,Road Armor rear bumper light force driving lights, PIAA backup lights,Dakota digital gages, F5 DP tuner chip,Hypermax stage 2 injectors,4" exhaust, 11" Edge lift, King shocks, edge crossover steering, ORU ram assist steering
Fabtech ladder bars,TN turbo, Dynatrac conversion kit. Alpine F1, Zapco amps. two dc1100.1, three dc1000.4, 1 dc750.2, driving seas reference series front stage and Zapco competition rear fill and 2 Jl audio 13w7 subs
AP Racing big brakes, Amp Research running boards
I don't know who makes it for ATS but I just ordered the Duramax 4" ATS stainless steel muffler, after talking with tech support from ATS. I want a full flow but quiet inside the cab muffler. It should be here friday and I already have my EPI flex connector ready to go.
mike
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2002 Excursion LTD(PCM:NQW5)Pheltech Tru-Cowl Induction Hood BTS transmission ITP fuel system, 38/15.5/20 Toyo's on Weld 12" wide wheels,15k warn and warn 9.5k rear 4:56's ARB air lockers front and rear. Trail ready front bumper,Road Armor rear bumper light force driving lights, PIAA backup lights,Dakota digital gages, F5 DP tuner chip,Hypermax stage 2 injectors,4" exhaust, 11" Edge lift, King shocks, edge crossover steering, ORU ram assist steering
Fabtech ladder bars,TN turbo, Dynatrac conversion kit. Alpine F1, Zapco amps. two dc1100.1, three dc1000.4, 1 dc750.2, driving seas reference series front stage and Zapco competition rear fill and 2 Jl audio 13w7 subs
AP Racing big brakes, Amp Research running boards
I have a 20" Magnaflow and I cannot tell any difference in before or after the installation. ie, exhaust temp performance, reduction in drone. I had the drone before and still have it. I have added the epiflex pipe with no reduction in drone. The muffler works fine probably a little more rumble outside but none inside. The drone is definitely in the exhaust. Iam now considering a banks stainles upgrade to a 3 1/2" down pipe and 4" exhaust. I hope this helps.
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2000 Excursion Limited White 2WD 7.3 Diesel A Pilar 3 guages, PP III. Magnaflow 4 muffler, TURBO DIESEL badge. Cherry wood console extention. Bilstein shocks
I just got back from a hard run with my 31' TT. I replaced the Walker/stock pipe configuration with a Jardine system. It's not stainless but is a 3 1/2" flared out to 4" down pipe to 4" back through a 4" Magnaflow muffler. I believe it dropped my EGT a little more, my flutter is gone, and didn't pick up any drone. It sounds low and mellow and not at all loud.
The issues I had with this kit is that I didn't specify that I have added a rear sway bar so that the crossover pipe should have been slightly longer to better clear the sway bar and the shock. Also the muffler didn't have a big enough pop out to accommodate the 4" pipe. I ended up going to a professional shop to finish my install.
I paid $425 plus freight for the kit that includes clamps, hangers, and a 5" chrome tip. I installed it and the next morning ran from Bakersfield CA to Las Vegas NV with the 31'er in tow. For those of you not familiar with the rout, there are some pretty steep grades along the way. I am thoroughly pleased with the performance of this exhaust and as a kit just needs alittle tweeking. I Talked with Matt of Pinnacle Performance at 1 800 934-3569 in Dubois Wy. Not sure how long the price will hold.
HTH
Oley
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(Member Since April 2000)
2000 Excursion LTD, AXD1, TS 4 way tuned at BTS
3 WD gauges on the post with EGT in exhaust manifold and 203* T-stat
FleetGuard pre-pump spin-on fuel and Oil Guard by-pass oil filters and homemade ccv re-rout
{homegrown air intake} Western Diesel Ram Air scoop with HUGE 'TYMAR STYLE' paper filter,
ATS turbo housing W/Wicked Wheel on stock Garret, with Riley air charger boots
and intake heater deleted also Billet aluminum air intakes
{Exhaust is} Jardine 4" with 3 1/2" DP
{She's been} "hutcned" & "TT"d & HX oil crossover hosed
BTS/W V10 cooler, BD TorqueLoc, and Cyclone fan clutch, Mag-Hitec tranny & rear end pans
For ride and tow she's got the Hellwig rear anti-sway bar, Edelbrock IAS shocks,
Firestone Ride Rite over-loads, Tekonsha Prodigy, and Hensley Arrow
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