Speed Inc has a large portfolio's of custom turbo systems built on late model domestic vehicles. Dipping into the 8's in the 1/4 mile and speeding above 199mph in a standing mile. Built around efficiency and dependability, these vehicles can be driven regularly on the street. Advancements in dual stage fuel injection, large high impedance injectors, 3-bar programming for factory PCM's, and adaptable after market PCM's have helped each project obtain awesome power results while not being a 'race car'.
This is the latest turbo vehicle to roll off the dyno at Speed Inc.
Engine:
408ci LSx Motor (Iron block)
234/234 @.050 113lsa Camshaft
Patriot Cylinder Heads
GM LS6 Intake Manifold
Stock LS1 Throttle Body
Turbo System:
GM Truck Exhaust Manifolds
(2) Precision PT67 P-trim Turbos
(2) Tial 38mm Wastegates
50mm Tial BOV
Dual 3" downpipes
4" Single exhaust
Magnaflow Muffler
Hot Side - High Temp Black Ceramic Coating
Cold Side - Gloss Black Powder Coating
PCM/Fuel:
HPTuners 3-bar OS
(2) 255L Walbro Fuel Pumps
RC 75# High Impedance Injectors (66psi base pressure)
Dyno runs were made through a T400 trans and 12bolt rear end.
Engine was pulled to 7,350.
New Speed Inc. Twin Turbo 408ci dyno results 
