High-flow diesel exhaust systems for trucks and SUVs. 4" and 5" systems, DPF-back kits, and performance upgrades for maximum power and efficiency.
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Best AP Exhaust catalytic-converter for 2008-2006 Ford F-150 Left | Direct Fit | EPA/CARB Compliant | 645200
$981.88
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2012-2009 Ford Escape Rear | Direct Fit | EPA/CARB Compliant | 645197
$519.48
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2011-2005 Toyota Tacoma Rear Right | Direct Fit | EPA/CARB Compliant | 645196
$986.66
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2011-2005 Toyota Tacoma Rear Left | Direct Fit | EPA/CARB Compliant | 645195
$1,401.40
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2010-2005 Volkswagen Jetta | Direct Fit | EPA/CARB Compliant | 645194
$1,662.64
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2009-2008 Chevrolet Trailblazer | Direct Fit | EPA/CARB Compliant | 645185
$1,245.46
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
Best AP Exhaust catalytic-converter for 2017-2011 Chevrolet Silverado 2500 HD | Direct Fit | EPA/CARB Compliant | 645184
$1,719.20
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2007-2005 Ford F-250 Super Duty Fro | Direct Fit | EPA/CARB Compliant | 645176
$1,405.94
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
Best AP Exhaust catalytic-converter for 2006-2004 Jeep Wrangler | Direct Fit | EPA/CARB Compliant | 645174
$2,420.98
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2006 Chevrolet Silverado 1500 | Direct Fit | EPA/CARB Compliant | 645173
$1,383.10
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2020-2015 Ford F-150 Left | Direct Fit | EPA/CARB Compliant | 645170
$947.74
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
Best AP Exhaust catalytic-converter for 2020-2015 Ford F-150 Left | Direct Fit | EPA/CARB Compliant | 645168
$859.34
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
Frequently Asked Questions
What size exhaust for deleted diesel?
4" is minimum for deleted diesels; 5" is ideal for heavily modified trucks. Larger diameter dramatically reduces EGT and backpressure, crucial when deleting emissions equipment. Straight-pipe or single muffler designs flow best. Note: Emissions deletion is illegal for street use.
Will bigger exhaust help my stock diesel?
Yes! Even stock diesels benefit from 4" turbo-back systems. Expect lower EGT (50-100°F drop), slightly better MPG (1-2), and improved throttle response. Gains increase dramatically with tuning. Larger exhaust is essential foundation for any diesel performance build.
Turbo-back vs DPF-back exhaust for diesel?
Turbo-back systems (from turbo to tip) provide maximum performance by reducing all backpressure. DPF-back systems (behind diesel particulate filter) maintain emissions compliance while improving flow. For stock trucks staying emissions-legal, DPF-back offers best balance of performance and legality.
How much HP does exhaust add to diesel?
On stock diesel engines, exhaust alone adds 10-20 HP. With tuning, the same exhaust supports 50-100+ HP gains by reducing EGT and backpressure. Exhaust is essential before adding power - it's not the biggest power adder itself but enables other modifications to work safely.
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