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New Arrivals from Powerflex!
New Powerflex Transfer Case Bush Insert!
New Powerflex Bushes for Audi RS2 & Quattro Models
New Forge Arrival
New Arrival: Precision Raceworks Auxiliary Fuel Systems
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We’ve just added three new products to our lineup:
Upgrade your ride with these high-performance rear lower toe link inner bushes, designed for improved handling and durability. Available now!
Upgrade your drive with our latest Powerflex Transfer Case Bush Inserts, designed specifically for the E9x, X1 E84, and X3 E83 models. These easy-to-fit inserts fill the void in the OE rubber bush, reducing movement, enhancing stability, and prolonging the life of your bush.
Choose the perfect fit for your setup:
Perfect for maintaining performance and reliability, these inserts are a must-have for any enthusiast. Shop now and experience the difference!
Celebrate the 30th anniversary of the Audi RS2 with Powerflex’s new rear differential upgrades:
These parts are available in two options:
Both parts are also compatible with S2, 80/90 Quattro, B5 A4 Quattro, and S4/RS4 models, and come with a Lifetime Warranty for peace of mind.
Upgrade your Audi’s performance today!
New Arrival Alert!
Unleash the full potential of your BMW B58 engine with the Forge BMW B58 Carbon Induction Kit!
Highlights:
Optimize performance, reliability, and style in one sleek package. Get yours now!
Take your X3M, Supra, and M2 to the next level with Precision Raceworks’ Auxiliary Fuel Systems (AFS). Designed for stability and performance, these systems deliver unmatched fuel control for your port injection setup.
Why Choose Precision Raceworks AFS?
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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 the ER Competition Series 4.5" Catless Downpipe, more power is unleashed!You will feel the difference instantly. While the 32whp and 16wtq gains are awesome, one of the best aspects of the downpipe is that the gains are not just peak gains. Examine the dyno graphs and you will notice the powerband shifting to the left. What this means is that turbo lag is reduced with power coming on faster. Gains are throughout the powerband as well. Your car will feel like a totally different beast. As if it had woken from it's sleep!
We also recommend to replace the downpipe gasket when installing the ER downpipe.
Toyota A90 2019+
BMW 1 Series
• 2016+ F20/F21 B58 M140i/x BMW 2 Series
• 2016+ F22 F23 B58 M240i/x
BMW 3 Series
• 2016+ F30 F31 F34 GT B58 340i and 340ix BMW 4 Series
• 2016+ F32 F33 F36 B58 440i/x
Also fits G30 540i, X3/X4/X5 M40i/x & G29 Z4 M40i
ER B58 4.5" Downpipe Dyno
SO WHY 4.5" PIPING?
The new turbochargers on the B58 engines utilize a much larger 4.5" outlet compared to the 4" outlet on the older N55 engines. If we ran a 4" downpipe flange inlet so that we can use 4" tubing, a "step" would be formed between the turbocharger outlet and downpipe inlet. Exhaust gas for the turbocharger would hit this "step" and a lot of turbulence would form at this point and cause backpressure. Backpressure this close to the turbocharger would greatly affect performance. Thus, to ensure that we get unobstructed flow from the turbocharger outlet to the downpipe inlet, we had to CNC machine a new 4.5" flange to match. This allows a seamless transition and eliminate any possible turbulence which would cause backpressure. Though this presented another challenge for us as 4.5" tubing is not readily available and hard to source. The ER motto "Performance, No Compromise" prevailed at the end and through hard diligence and many phone calls, we finally found a source for the material. Even though the material was considerably more expensive than standard 4" stainless steel, we wanted to give our customers the best by producing the best product possible.
The ER Competition Series Catless Downpipes is constructed out of 100% 304 grade stainless steel and utilize mandrel bent piping. They are 100% TIG welded by ER's 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 4.5" and the factory exhaust system is 3", the factory downpipes reduces size using short transitions from 4.5" 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 catless 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 4.5" 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).
The ER 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.
BM-EXH018 (BMW)
TO-EXH001 (Toyota)
Manufactured by
Evolution Racewerks (ER)
Warranty
Evolution Racewerks (ER) Limited Lifetime Warranty (Non-Transferable)
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