Sound of Flowmaster on Seville STS (4.6L Northstar, 300HP)

Sound of Flowmaster 40 Series mufflers on 1996 Cadillac Seville STS, by request.

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Cadillac Seville With Flowmaster Super 44 Exhaust
Before and after 2004 Cadillac Seville 4.6L 275 HP V8 with dual Flowmaster Super 44 mufflers Part# 942446





Cammed out 1998 Cadillac STS
Our official Test Car, with a custom set of camshafts under the hood and modified Exhaust (not street legal).





Cadillac with 40 series Flowmaster
My Lac with Super 40 Flowmasters





Cadillac STS Turbo - 650 HP - QuickRev.com
This is a brief video of Mark's turbo Cadillac built by QuickRev! Mark ran a new record time of 11.82 @ 119.41 MPH. Congrats Mark! ***Click (more info) for modification list*** 99 STS Cadillac 4.6L 32 Valve double overhead cam North Star 650-700 Wheel HP @ 21 lbs of Boost turbo mods: -70 mm single turbo -Raptor blow off valve -turbo Smart waste gate -Custom Intercooler -turbo oil scavenge pump -3 bar map sensor -Electric Exhaust cutout -Custom made Burns stainless steel piping -Corsa cat back Exhaust Chassis and electronic upgrades: -PCS standalone transmission controller -Holley 950 Commander Standalone engine management system -Greddy Profec B custom dash mounted electronic Boost controller -Custom paddle shifter on steering wheel -Power Stop slotted rotors w/ hawk pads -Walbro 255 fuel pump -Transmission cooler Motor upgrades: -Darten Sleeved block -Arias forged pistons -Eagle forged rods -ARP head studs -Cometic head gaskets -Ported heads, throttle body and intake -Mod motor fuel rails -60 lb injectors -Braided Stainless Steel Teflon fuel lines -Aeromotive fuel pressure regulator -Upgraded valve springs -stock 300hp cams




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