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I have a 2007 mustang gt convertible with I believe 300 hp…

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I have a 2007...
I have a 2007 mustang gt convertible
with I believe 300 hp stockI added headers , straight through , chipped with special tune , special program for the 4 o2 sensors we removed , also has air raid air box , & 4:10 rear gears & tuned for it
how many horse power could I be running now? I think at least 400-420 ?
Submitted: 11 months ago.Category: Ford
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Answered in 2 hours by:
9/7/2017
Ford Mechanic: Matt, Engineer replied 11 months ago
Matt
Matt, Engineer
Category: Ford
Satisfied Customers: 23,444
Experience: BEng hons Mech engineering, in auto industry 22 years
Verified

Hello

with those modifications I'd expect about a 15% gain in power so about 345Bhp

but why not just put it on some rollers and be sure? as that way you can check if the AFR is correct at the same time and a quick power run can be done in about 20 minutes at most dyno shops.

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Ford Mechanic: Matt, Engineer replied 11 months ago

Hi
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