Product Description
ER BMW F30 / F32 Downpipe Now available for the 2012-2013 BMW 335i (F30 Chassis) N55 Engines! The Evolution Racewerks 4" Race Downpipe for your F30 N55 is what you need! 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. Brush Finish (standard) or optional Polish 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. 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" Race Downpipe, more power is unleashed! You will feel the difference instantly. Our Competition Series Race 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 V-Band flange which we have duplicated and 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. Since the outlet of the turbocharger is 3.5" and the factory exhaust system is 3", the factory downpipes reduces size using short transitions from 3.5" before the catalytic convert and 3" afterwards. Due to space needed for the cataylic converter, the factory downpipes reduce in size using very short transitions. Since our Race downpipes delete the cataylic converter, we have more space. Thus, we use very long transitions. These longer transitions allow the exhaust gas time to smoothly transition from the larger piping to the smaller. Also, since we utilize a larger 4" pipe right after the turbocharger, turbo backpressure is significantly reduced. This results in less exhaust turbulence and backpressure which again improves throttle response and increase turbocharger spool times (less turbocharger lag). Our downpipes are designed to fit perfectly with either the factory exhaust system or your aftermarket exhaust system. There are no compatibility issues whatsover. The downpipes will come by default in Brushed Finish. We also offer a Polished Finish as an option. 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. NOTE: The F Series (1,2,3,4 Series) N55 cars all share the same downpipe. When first introduced, the downpipes had a 3.5" v-band flange inlet on the turbocharger side. On 07/13, BMW decided to change the downpipe. This new downpipe featured a 4" v-band flange inlet instead. Thus, the previous downpipes are not compatible with the new ones. Below is the breakdown on which downpipe to chose based on production date: 335i (U.S. Spec) - Up to 07/13 have the old downpipe (BM-EXH007) 3.5" After 07/13 have the new downpipe (BM-EXH012) 4.0" 435i (U.S. Spec) - All 435i have the new downpipe (BM-EXH012) 4.0" M235i (U.S. Spec) - All M235i have the new downpipe (BM-EXH012) 4.0" M135i (European Spec) - Up to 07/13 have the old downpipe (BM-EXH007) 3.5" After 07/13 have the new downpipe (BM-EXH-012) 4.0" IF THE VEHICLE IN QUESTION IS BUILT ON 07/13, IT CAN HAVE EITHER DOWNPIPE. A VIN# CHECK SHOULD VERIFY WHICH DOWNPIPE IT IS. TO BE ABSOLUTELY SURE, A VISUAL INSPECTION NEEDS TO BE DONE. SINCE THE FACTORY PART# ON THE DOWNPIPES ARE DIFFICULT TO SEE, THE BEST WAY TO CHECK IS TO LOOK AT THE PART# ON THE BRACKET HOLDING THE DOWNPIPE. THE OLDER DOWNPIPES HAVE 2 STUDS GOING INTO THE BRACKET AND ATTACHED BY 2 NUTS. THE NEWER DOWNPIPE HAS 1 STUD ON TOP ATTACHED BY A NUT. THE BOTTOM BRACKET IS ATTACHED WITH A BOLT, NOT A NUT. *Note* Most brushed ER Race downpipe options are in stock and ship within 1 business day. Items listed as built to order may be in stock but on some occasions need to be built to order, as a result please expect 2-4 weeks for built to order items. We will notify you of an ETA within 1 business day of your order. THESE PARTS ARE LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AND ARE NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE. A "racing vehicle" is a "competition vehicle not used on public highways." These parts may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event. Competition-only motor vehicles may not be driven to a racing event on a public highway and must be transported on a trailer or other carrier. USE OF THESE PARTS IN ANY OTHER VEHICLE MAY SUBJECT YOU TO FINES AND PENALTIES FOR VIOLATION OF FEDERAL AND/OR STATE LAW, AND CAN VOID YOUR VEHICLE'S WARRANTY. It is your responsibility to comply with all applicable federal and state laws relating to use of these parts, and TGS LLC. hereby disclaims any liability resulting from the failure to use these parts in compliance with all applicable federal and state laws. Note: All California residents will be sent a Vehicle Compliance Waver stating the purchase of this item is for off road use only and will only be used on a Racing Vehicle and not operated on public roads. We will need this waiver signed and sent back to us for our records ER Race Downpipe BMW F30 / F32 335i / 435i / M235i
