Cobb Focusing - 6 and Mazdaspeed 3 Subaru WRX/STi XLE BPV

With the introduction to Cobb Tuning building a return to generating tough elements, their expected launch of-a bypass valve is welcomed. Many of us have now been waiting for a valve that is an easy task to regulate, appears wonderful and operates 100% with no racing on-the turbo compressor.Question: So what exactly is a BPV and what is the-difference between a ( Blow off valve ) and a (Bypass Valve )?Answer: Its simple.. It all boils down seriously to whether or perhaps not your car runs on rate density or mass air. You will not have a large air meter, if you've an automobile that is rate density. So, efficiently, you can operate a Off Valve which give off a very noisy WHOOSH noise as you shift gears when in increase. A By-pass Valve takes that increased air its ventilation, and recirculates it back in the consumption. The significance of this on a large air vehicle is, that air had been metered and measured, therefore, venting that air to the setting may cause your can to get wealthy. You are allowing it to hit in-the air and effectively eliminating air once measured, so the car will add more fuel convinced that air is still incoming. Many enthusiast choose the sound of-a BOV, but usually they wind up doing damage to their catalytic converters as a result of the wealthy problems integrated into managing a VTA ( Vent To Atmosphere ) system on a MAF equipped car.Question: Whats the intent behind these valves anyways?Answer:1) Boosted vehicles produce incredible levels of pressurized air that is moved very quickly through the consumption system. This air may go very quickly into the engine, once the throttle human anatomy is available. After the human anatomy closes, that quick air has no spot to get. You've a good amount of air trapped in-a little spot ( charge pipes ) that may rush, causing considerable harm to your consumption system and even your cars cover. On turbocharged cars specially, its principal work as a Valve (BPV )/Blow Off Valve (BOV), is to generate this boost pres-sure to prevent this pressurized air from being diverted straight back toward the turbo impellers. If this pressurized air is not released, the diverted air could cause the turbine wheels to slow and possibly even booth, causing wear and damage to the turbocharger. A turbochargers impeller wheels could rewrite excessively of over 60,000 RPM, therefore if the impeller was to fail, you would see a of damage.2) Its second function will be able to carry top boost during gear change with no considerable lack of boost during this event. A good BPV/BOV can take a higher sum of boost, for the time of changing gears, without degrading performance.3) One thing to remember on a Mazda, the inventory BPV leaks, perhaps at as low as 8 psi of boost. That is almost half of the rated 15 psi a rate can produce stock!Cobb Tuning posseses an response for those looking for that noisy hit off sound but with a margin, the Cobb Tuning XLE BPV. It could be setup to run in 3 ways, one being a hybrid function which allows a minute number of VTA without placing the car in-a condition. You get that noisy WHOOSH but you also get that important relied atmosphere, recirculated back in the system.Even though this device will come in at a large cost of $299, its no actual more expensive then the most over-rated BPV on the industry, the HKS SSBOV.. Used Subaru cars. The Cobb XLE does not require any kind of flange adapter. The HKS needs an adapter to-be suited to it before it can be attached to a Mazdaspeed 3 or 6. Since it runs on the snap ring.. Installing the adapter is a pain. Probably the most troubling the main HKS is simply how much plastic is found in the valve, but more overwhelming, its inability to-be variable. $300? Actually? There are numerous reports on our forum regarding the HKS slipping apart... The plastic inside is breaking... This is definitely not the sort of device i'd like inside my car. Phase aside, we have a fresh BPV in the marketplace thats venturing out be worth the $299.The Cobb Tuning XLE BPV is one unit that can be used to several vehicles. First off, if you want to substitute your Mazda with a scoobie, this is often done with an easy part change and never have to buy a new device. Below are the specs on the Cobb XLE:FEATURESBody* Human body, mounting flange and secondary store address are constructed of 6061 T6 aluminum. * The human body is hard anodized for extra power. * The main store is square in shape to offer optimum cross sectional area for venting condensed air as rapidly as possible. * The secondary outlet cover may be removed to enable incomplete vent to atmosphere or full vent to atmosphere processes. * Unit peak is simply 3.5 inches from bottom of flange to prime pre-load adjuster,allowing it to suit into the smallest of locations. * Human anatomy to rising flange software is o-ring enclosed, allowing flanges of various patterns to work with multiple applications.Piston* Lightweight aluminum piston allows faster response time than heavier pistons. * The metal piston has-been hard anodized and impregnated with Teflon to provide smooth movement, reduce surface use and minimize maintenance. * Rounded piston page smooths venting as it goes through they tube. Once the BPV is closed * The rounded piston report partners using a rounded piston chair for outstanding sealing. * Tight ceiling o-rings are used to seal piston to cylinder bore appropriately at normal engine operating conditions without compromising piston speed.Preload Adjuster and Spring* Adjuster allows change of spring preload for fine tuning discharge pressure. * Spring and spring seat are made out of 303 stainless. * Spring preload adjustment system and fasteners are stainless steel.Operation* Valve vents condensed atmosphere very quickly because of light elements, dock form and low sliding friction. * Unique exhaust noise as a result of speed of air discharge. * Construction products make the XLE BPV compatible with alcohol/water shot due to natural oxidation resistance. * Lighter than many aftermarket BPVs and BOVs.OPERATING MODESFull Recirculation - Outlet is plumbed back in the intake tract pre-turbo. This setting supplies the most useful driveability with investment based MAF systems. This arrangement generates the least quantity of noise.Hybrid Mode - Outlet is plumbed back to the intake area pre-turbo and the auxiliary port cover is removed. The additional port is starts, audibly venting to atmosphere, once the piston is over 307 open. Less-than 30% open leads to whole recirculation to improve driveability.Full Atmosphere - additional dock and Outlet are open to atmosphere. Recommended only for MAP based atmosphere metering. That arrangement provides the highest noise levels.ADJUSTMENTSpring Preload - Spring preload determines the pres-sure differential throughout the BPV piston required prior to the BPV opens and releases the condensed consumption charge. The COBB XLE BPV could be adjusted by loosening the locknut and turning the allen-head shaft clockwise for more preload or counter-clockwise for less preload. Once preload is placed, the locknut is retightened and ensures the modification is secure.Installation:Parts List:* Bypass Valve * O-ring (Mazdaspeed 3 Ap-plication Only) * Paper Gasket (Mazdaspeed 3 or LGT/08+ WRX Applications Only )Tools Required:* 3/8' Ratchet * 10mm & 12mm Socket * 10mm & 12mm Open End Wrench * PliersTools Necessary for Maintenance:* 3mm Allen Key * 4mm Allen Key * 13mm Open End Wrench * Moly-Based GreaseInstalling this item could not be easier. The stock bpv is dark in color, built of plastic can can be observed on a Mazda right at the cold tube on the stock TMIC1) Have a pair of pliers and eliminate the recirc hose on the back-of the valve (huge 23mm hose). Information the pliers to-the butterfly clamp, compress pliers to produce pressure and slip right back clamp 3 inches from the lip. Pull on the line to relieve it from your valve.2) Simply take the pliers and remove the tiny vacuum line-in exactly the same way as you did the above mentioned recirc hose.3) Remove the (2) 10mm screws holding on the BPV onto the pipe and set them down to the side, we will reuse these.Now, you have to decide if you want to work full recirc o-r hybrid mode. You'll have to eliminate the trap door about the valve using a 3mm allen key/bit, if you choose to run the higher hybrid method. Theres only 4 of these keeping it on, so its actually simple.Once you have decided which route you will take, eliminate the paper gasket from the package and place it on the device, using equally products to keep it in place. Simple place the device straight back onto the BPV flange and retighten it. Now word-of warning here.. Should you be using an TMIC, I strongly recommend using a ratchet expansion with a 10mm deep well outlet handy tighten both screws evenly. Give one good 1/4 inch prank on both bolts, once they are hand small and that's it. They scarcely demand much torque and we keep reading about Hercules breaking off his products within the cold tube o-r burning the threads.Once you got it torqued back, only join both tubes and take it out for a drive. I seriously doubt you'll have to make any corrections to-the valve, but when you do, keep reading.Adjustment:Adjusting this valve is just a no brainer. Simple place a 13mm open-end wrench onto the jam nut located on top where the vac line attaches, then take a 4mm allen/bit and move clockwise to increase spring pressure ( increase the chance of compressor surge / vent slower ) or counter-clockwide to decrease spring force ( decrease the chance of compressor surge / vent faster ).Now a term to-the wise for you personally noobs.. Growing the spring tension here doesn't raise the number of increase this valve can hold. If you wish to keep more raise, an alternative spring should be fitted in this valve.Maintenance:It is recommended that each time you modify your oil you inspect your COBB Tuning Bypass Valve to ensure the piston remains moving freely. You certainly can do so by unbolting the BPV from your vehicle mounting flange and moving on-the piston. It's advised to-remove the piston from the human body and clear and re-grease the piston, we advise ARP Ultra-Torque Fastener Assembly Lubricant, P/N 100-9911, If you can feel some resistance, but any moly-based fat will work great. I like the redline red moly that I used during both Cobb STS and TWM Performance STS installation.Disassemble the COBB Tuning BPVIn order to get rid of the piston, unbolt the bottom flange from the human anatomy utilizing a 3mm allen key. With regards to the BPV type you've, this may be 5-6 socket head cap screws. Be careful to not cut-the o-ring, when removing the piston. If your o-ring is ruined, it is possible to contact COBB Tuning for a replacement.Reassemble the COBB Tuning BPVTo reassemble the BPV, force the piston back in the body, to ensure the piston doesn't protrude from the body. You can maintain the piston at that point by placing your hand over the vacuum connection.Place the bottom flange onto the human anatomy and re-clock the flange. Secure the flange with the 5-6 socket head cap screws, based on the product, using a 3mm allen key.Conclusion:I am therefore pleased to see this easy device hit the market that not only looks and sounds awesome, but is fully-functional, adaptable and isn't finicky right from the field. For a long time I was owning a Forge Valve that had a 2 shims and spring. It gave me issues with no shims, it also gave me issues with a shim. It was 75% on I hold-all of my boost all through move, mark with 2 shims.With the Cobb XLE and its noisy, meaning people know you're on the boost. Additionally, it does not sound like a couple of ninjas having a sword-fight under-the lid like the Forge does.Keep your eye on-the device needing grease, esp is you are operating the hybrid mode or your vehicle is in-a lot of humidity like rain or snow. This will def dysfunction the grease in-the piston.Also keep in mind that the paper gasket BECOMES necessary o-n both scoobies and Mazda's. I've seen some genius's make an effort to go right o-ring and until your flange is hundreds of degree, you are likely to drip some raise without the gasket. Therefore, use the gasket guys... For our program to keep this valve from leaking.I would like to thank Gary Sheehan for accidentally setting this in-the package while obtaining the Cobb FMIC V2.0 out-to us It's re-usable and needed!