how much horsepower does a dual outlet flowmaster add to a V6 3.4L

Asked by rusty09 Apr 20, 2009 at 01:06 PM about the 2005 Pontiac Grand Am SE

Question type: Car Customization

i just wanted to know how much extra hp the 80 series flowmaster exhaust adds to my already 170 HP stock V6 3.4L

3 Answers
15

Corey answered 15 years ago

maybe 1 or two. on my 2001 gt i lost alittle low end power but increased in power after 3,000 rpms. unless you do a 2.5 catback then you might see alittle more but not to much. get some headers then you will see an increase

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780

fierogtchuck answered 12 years ago

Ten thousand horsepower. Or one horsepower. Something in between. Maybe. Actually, probably zero.

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