[Evolution Racewerks]

Hi all!

I'm proud to finally announce that our track use N20 downpipes are officially out of testing stages and is now available to the public!



Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars such as the new 2012 BMW 328i. Thus, removing as much exhaust flow restrictions as possible 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 further increases restriction). By replacing the factory downpipe/catalytic converter with our Competition Series 4" Catless Downpipe, we are able to unleash significantly more power out of the engine. 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 and the torque curve is significantly broader throughout the RPM band. This equates to faster turbo spool up (less turbocharger lag), better throttle response, and more usable power. You will feel the difference instantly.


Key Features:

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


OPTIONS

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.

First two and last pictures are the stock downpipes.

[robbieracer]

Looking forward to those dyno results. Looks like a nice quality craftsmanship.

[mfear]

needs more watermark..

[ƒ°]

Originally Posted by mfear

needs more watermark..

Word. I can still see some of the pipe in the images.

[Micleg]

Originally Posted by mfear

needs more watermark..

Haha, a bit of Homer in that reply... Need...more...watermark.

[Q4P]

You guys get this beast FBO and put that new JB tune on it and you should make close to 300 WHP. It may prove to be a very potent DD.

[Evolution Racewerks]

Sorry for the excessive watermark but our designs have been known to be stolen and copied in the past so it's better to be safe than sorry this time around. FBO 328i will be coming soon, keep posted!

[SGScuba]

The extent and intrusiveness of the watermarks is pretty annoying. I think if it were a different color or a different shade of red (say brown), it would stand out less and therefore be less distracting.

[bmrm396]

good stuff, NOW HOP ON THE 335!!! haha

[Grumpy514]

@ the watermarks. No reason for that many watermarks, other companies will soon have their downpipes out as well. No biggie.

[Evolution Racewerks]

Just ran this setup at the NASA event over the weekend at Buttonwillow raceway. Huge improvement in terms of response and power!

[vaisms]

Originally Posted by Evolution Racewerks

Hi guys,

As you all know, we've been very busy over here at ER recently with our new F30 328i and I'm glad to introduce our latest product: the N20 catless off-road downpipes!

The downpipe features are as follows:

4" diameter starting at the turbos.
Converges to factory style 3" w/ factory style flex section.
All of this eventually converges to mate perfectly to the stock exhaust.

We will have the car on the dyno very soon once our exhaust and intercooler is completed. Expect to have a full range of N20 products from us soon including, but not limited to, intake, downpipes, full catback/turboback exhaust, and FMIC.

The downpipes will be ready for production in about two weeks and will come in brushed finish, fully polished, and ceramic coated. Look out for a intro sale very soon!


First two and last pictures are the stock downpipes.

Hi!

Do you know if these downpipes would be applicable for F30 320i petrol running on same N20 engine. I reckon it should be?
We get these cars in Asia, instead of the 320i diesel.
Let me know pls?

Thanks

Daniel

[jj970]

How do the DP's sound? I have a new f30 n20 and I'm interested. I can drive up from San Diego.

[jeanchristophele]

Originally Posted by jj970

How do the DP's sound? I have a new f30 n20 and I'm interested. I can drive up from San Diego.

Moreover, can we have a sneak peak youtube video?

Subscribed.

[Evolution Racewerks]

updated with dynos and more information!

[chancejat]

how hard is the installed compared to the n54??

[sutter2k]

Originally Posted by Evolution Racewerks

updated with dynos and more information!

So roughly stock n55 numbers. Perhaps a little more torque. Seems like a nice place to be. This is on 91?
How much more power do you think is left in this platform with stock turbo?

Is there a reason the graphs are a little bit lumpy? Is there knock or jb4 tune is not all the way dialed in?
Why are horsepower and torque not crossing at 5252 rpm?

[jj970]

Originally Posted by sutter2k

So roughly stock n55 numbers. Perhaps a little more torque. Seems like a nice place to be. This is on 91?
How much more power do you think is left in this platform with stock turbo?

Is there a reason the graphs are a little bit lumpy? Is there knock or jb4 tune is not all the way dialed in?
Why are horsepower and torque not crossing at 5252 rpm?

You forgot to dyno it with no tune and just the downpipes.

[Evolution Racewerks]

Originally Posted by jj970

You forgot to dyno it with no tune and just the downpipes.

Just dp's no tune

[Evolution Racewerks]

interesting fact: our flex section is actually of higher quality and cost more than the oem flex section

[joneffingvo]

bump! for some awesome stuff!

[DimSum]

How does it sound after?