In this video we install Doug Thorley 4-2-1 headers on our 2004 V8 4th gen 4runner. Towards the end of the movie, we do a sound comparison and dyno it. We make at least 37.4 ft-lbs more torque!!! We plan to tow our track miata with this 4runner - so every bit more torque helps. This vehicle has been completely transformed!

We did all of the common bolt-ons at the same time:
Doug Thorley headers installation
Y-Pipe Installation
O2 simulator installation
Gibson catback exhaust installation
Volant air intake

Parts:

Doug Thorley Headers (off road use only): [ Ссылка ]

Y-Pipe: [ Ссылка ]

O2 simulator (off road use only): [ Ссылка ]

Gibson cat-back exhaust:
[ Ссылка ]

New Fastenal engine mount hardware (class 10.9):
[ Ссылка ]
[ Ссылка ]

NGK spark plugs:
[ Ссылка ]

Rubber splash guards/rain guards:
[ Ссылка ]

Milwaukee Cordless Ratchet:
[ Ссылка ]

Milwaukee 1/2" Impact:
[ Ссылка ]

BudBuilt Skid Plate (AL, bare metal):
[ Ссылка ]

Headlights (custom FX-R Bixenon projector retrofit on OEM Toyota headlights):
[ Ссылка ]

Music by Kurtis Tyler (check out his Spotify!): [ Ссылка ]

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