Do I need a tune? (Test Pipes+exhaust system)

Rosstifer · 12-16-2020, 10:59 AM

Hey guys,
I have done a lot of research on the forum over test pipes and can't get the straight answer. Some say no, some say yes.

I have the Agency Power Exhaust System (Pretty sure just the axle back system), and plan on installing active autoworks test pipes.

Do I need a tune for this? Are there down sides of not having a tune after installation? What tune do you recommend if it is needed?

I am sure this gets asked a lot. Sorry for the ignorance.

91foxbody · 12-16-2020, 11:22 AM

If you remove the front cats via X-pipe or test pipes, you'll need a tune to remove the CEL.

12-16-2020, 10:59 AM	#1
Rosstifer New Member 0 Rep 5 Posts Drives: F10 2014 M5 Join Date: Jan 2019 Location: Newburgh, Indiana iTrader: (0)	Do I need a tune? (Test Pipes+exhaust system) Hey guys, I have done a lot of research on the forum over test pipes and can't get the straight answer. Some say no, some say yes. I have the Agency Power Exhaust System (Pretty sure just the axle back system), and plan on installing active autoworks test pipes. Do I need a tune for this? Are there down sides of not having a tune after installation? What tune do you recommend if it is needed? I am sure this gets asked a lot. Sorry for the ignorance.
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12-16-2020, 11:22 AM	#2
91foxbody Private First Class 47 Rep 126 Posts Drives: M3 Join Date: Mar 2016 Location: PNW iTrader: (1)	If you remove the front cats via X-pipe or test pipes, you'll need a tune to remove the CEL.
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