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I have the 4" maganflow with 3.5"downpipe my drone with the chip under load was too much. I just put back on a new OEM system. Quieter but some drone under load with programmer. Weird. Anyway, I don't push it as much anymore due to cost of fuel so backing off a little due to temp is OK with me. I don't think it makes much difference with mpgs. Go with BTM first. Of course I now have two good exhaust systems a 4" Maganaflow with a flex pipe and a new OEM system.
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2000 4x4 PSD Limited Excursion The Beast
DPTuner 40Tow, 60Tow, 80Econo, BTS Valve Body, AIS Intake, AIH Delete, MBRP Stainless 3.5" DP and 4" Exhaust, 5" All spring Edge lift, Rize Traction Bars, CV joint driveshaft, 315 BFG ATs on Alcoa wheels, Warn Transformer with multi mount winch power front and back, 1000 watt power inverter, VCR, 4.10 gears and ARB Lockers Front and Back
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