|07-03-2012, 04:19 PM||#1|
EVOLUTION RACEWERKS | Tester needed for N20 Downpipes on e89 Z4 28i
With the recent successful release of the N20 downpipes for the new F30 328i, we're now expanding the love to Z4 owners who also has a N20 engine. With that being said, we're looking for a E89 Z4 28i in the socal area to testfit our catless downpipes. We'll probably need the car for 1-2 days and in exchange you will receive our downpipes at 50% off and free installation.
If you're interested please pm me or shoot me an e-mail at firstname.lastname@example.org
More info of the downpipes are listed below:
Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars. Thus, removing as much exhaust flow restrictions will increase horsepower and torque significantly. The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. The factory catalytic converter is made up of catalyst material formed into "honeycomb" weaves. Exhaust gas must pass through these tiny "honeycomb" weaves on their way to the exhaust system thus causing a major exhaust flow restriction. It also causes turbulence after the catalytic converter which causes the exhaust flow to slow down (which increases restriction). By replacing the factory downpipe/catalytic converter with our Competition Series 4" Catless Downpipe, more power is unleashed! Our dyno testing has shown around 14-16whp average peak gains and upwards of 24wtq peak gains! While peak horsepower is nice, for dyno charts, what's more important is the power curve. If you look at the dyno charts, torque hits MUCH earlier and harder. The torque curve is BROADER throughout the RPM band. More usable power. This equates to faster turbo spool up (less turbocharger lag) and better throttle response. You will feel the difference instantly.
Now available for the 2012+ BMW 328i N20 Engines!
Horsepower gains of 14 to 16whp average (gains will vary based on modifications of your vehicle).
Higher Max Horsepower Power Curve
Torque gains of 16wtq average (stock boost) up to over 24 wtq (Software upgrade) (gains will vary based on modifications of your vehicle).
Higher Intial Torque Curve. Torque curve hits faster and higher and longer.
Better throttle response and faster turbo spool up times.
Mandrel Bent 4" piping. Smooth transition to the exhaust system.
100% Stainless Steel Construction
100% TIG welded for better quality welds
Precision CNC machined turbocharger V-Band flange.
Stainless steel flex section like factory that allows proper exhaust movement and flexibility.
Mirror polish or brush finish
Available with high temperature black thermal coating to reduce underhood temperatures.[*]Optional - Additional O2 sensor bung for wideband O2 sensors (comes with pre-installed plug)
Optional EGT sensor bung for EGT gauges (comes with pre-installed plug)
Compatible with the factory or aftermarket exhaust systems.
Track tested durability.
Includes all hardware for complete installation.
Limited Lifetime Warranty.
Blue Line - Stock Baseline
Red Line - BMS JB4 Tuning
Green Line - BMS JB4 Tuning with Evolution Racewerk Downpipe
Our Competition Series Catless Downpipes is constructed out of 100% 304 grade stainless steel and utilize mandrel bent piping. They are 100% TIG welded by our in house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a 4" V-Band flange which we have CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel rods. The O2 sensor is positioned at the factory location.
Stainless Steel CNC Machined O2 Sensor Bungs and Laser Cut Brackets
The factory downpipe utilizes a flex bellow section that allows the exhaust system to move. This eliminates undue stress on the exhaust components like the exhaust system, downpipe, turbocharger and exhaust manifold. Many of our competitors do not feel it is important to keep this. While you do not see any adverse affects right away, over time, the stresses caused by not having a flex section and having a rigid exhaust system will cause premature wear and tear. Any stress failures like cracks will form quicker than usual on exhaust manifolds and exhaust components. Also, without a flex section, the exhaust system cannot properly deflect impact. Especially on lowered cars, whenever the exhaust system contacts the ground, the entire system gets pushed up. Without a flex, you can imagine how much stress is put into exhaust components like the exhaust manifold when the exhaust is pushed upwards. We fully understand that durability of our products is important. Thus, like BMW, we incorporate a flex section into our downpipe. Our flex sections are 100% stainless steel (cheap flex sections only have stainless steel center braids and steel caps) to ensure corrosion resistance.
100% Stainless Steel Flex Bellow Section
Ceramic Thermal Coating - The purpose of ceramic coating downpipes is to keep heat from the exhaust gases inside the downpipe from radiating out. This keeps underhood temperatures lower and less heat absortion by nearby parts/surfaces. Another added benefit is that by keeping in heat (energy) in the exhaust gases inside the downpipe, exhaust flow velocities stay up, resulting in lower backpressure. The ceramic coating also adds additonal corrosion resistance. We utilize the best ceramic coating possible. Our thermal coating can resist up to 2000F of heat. It is available in black only (all the other colors cannot withstand heat that high).
Additional O2 Sensor Bung - An additional O2 sensor bung can be added so that you can easily add a wideband o2 sensor and gauges so that you can monitor air/fuel ratios. The additional O2 sensor bung will come pre-installed with a plug so that you do not need to run the o2 sensor right away.
Optional EGT (Exhaust Gas Temperature) Bung - An additional 1/8" NPT bung can be added so that you can easily add a EGT sensor and gauge. The optional EGT sensor bung will come pre-installed with a plug so that you do not need to run the EGT sensor right away.
|08-12-2012, 01:11 AM||#7|
Drives: I'm a hypermiler
Join Date: Jul 2011
Location: los angeles
looking forward to the results of this...patiently eager for the N54 engine one soon. =)
2015 M4 Mineral Grey with SO, 2015 BMW i8, 2014 Hyundai Santa Fe
2013 Tesla Model P85 (sold), 2010 RR Phantom, 2014 S550, 2012 Porsche Panamera S
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