HorsepowerFreaks has created the most reliable and powerful E46 M3 production turbo kits on the planet performing on BMW M3s around the world.
HPF E46 M3 turbo kits come in several different daily driveable stages designed to provide the ultimate powerband from the weekend warrior to the all-out road racer.
Each kit includes our state of the art "2 piece" turbo manifold produced by "Steed Speed" specifically for the E46 M3. Each turbo manifold is literally carved out of a large chunk of steel with each individual section welded together. There are several reasons for this incredible design.
#1) Assembly takes 1/4 of the time as the head flange simply bolts right up without any interference, then the main section is bolted on with 4 bolts.
#2) There is no chance of warpage or cracking with this manifold as opposed to tubular manifolds that tend to warp and/or crack over time as the pipes and the flanges have different rates of thermal expansion.
#3) Each manifold will be exact in every dimension to precisely .001" which is just not possible where individual pipes are cut and welded together.
#4) Every runner has an individual path directed to the turbo flange. These short clean runners provide the ultimate quick spool characteristics. Top end power is also improved over a comparable log style manifold as each runner follows it's own path the turbo as opposed to all runners going down the same channel.
#5) This manifold directs air flow from all 6 runners into the wastegate. This is not possible where merge collectors are used on tubular manifolds. This allows the computer to ramp up boost much quicker as the wastegate can remain closed until the last possible second and then opened quickly without creating boost spikes.
#6) In addition to manifold design, every manifold is also ceramic coated to keep under hood temperatures at stock levels retaining factory under hood conditions.
Each turbo kit comes with complete installation instructions (with full color pictures), and is entirely bolt on with no cutting, wiring, welding or tuning required. This includes every component you will need down to the last nut, bolt and washer and it all fits!!
* 91 Octane (518hp)
* 110 Octane (731hp)
* Multiply by 0.82 for rwhp
* Factory Internals
