Exhaust UpgradesHome | Free Mods | Intake | Ported Heads & Manifold | Exhaust | Gears | Transmission | Brakes | Parasitic HP | Fuelling | Interior | Weight | Performance | HP Gains | PartsThe stock exhaust system on a 1995 Mustang GT is a true dual system that can be divided into three sections: Front: Cast iron exhaust manifolds. Middle: 2-1/4" H-pipe with four catalytic converters and crossover. Rear: Two mufflers with 2-1/4" tailpipes. The main points of restriction are the manifolds, catalytic converters, and the mufflers. The stock 2-1/4" pipes present minimal restriction on an engine producing less than 400hp.
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Stock Exhaust
Upgrades to the exhaust system are usually close to the top of a Mustang owner's modding list because these produce decent horsepower/torque gains at relatively low cost. |
Modified Exhaust
My first upgrades were to replace the stock mufflers with two free-flowing 2-1/2" straight-through units, and I also replaced the rear two catalytic converters in the H-pipe with two more 2-1/2" straight-through mufflers and 2-1/2" piping on either side. These were welded into the existing pipework. |
MAC Long Tube Headers
These free-flowing HTS-coated MAC 1-5/8" long tube headers (part no. MAC-TF94015) replaced the restrictive stock exhaust manifolds. The stock manifolds don't look so bad until you see that the primary pipes are pinched down to a width of just 5/8" near the flange (height is 1-1/8"). |