SpeedCircuit

Looking to flow more air into your 4B11T? Check out our ported intake manifold! Designed to flow more air and make more power, this beautifully ported manifold will fit the bill.

This price includes a reconditioned intake manifold, however, if you send us a good core, we will credit you back up to $200 depending on condition.

This is our heavy duty 2.5" stainless steel downpipe from our SpeedCircuit Turbo kit for the Mazda Protege.

NOTE: THIS DOWNPIPE WILL NOT FIT A STOCK MAZDASPEED PROTEGE TURBO KIT.  It will not fit a Mazdaspeed Protege Turbo / T25 flanged turbos.  This is made to bolt up to a Ford style 5 bolt discharge.  If you are not sure what you have, this probably will not fit!

• TIG-welded construction
• Heavy duty and built to last
• Heavy duty and built to last
• Stainless flanges unlike other downpipes that use mild steel flanges that will rust and break
• Dump tube for an external wastegate that routes back into the downpipe. Includes a flexible section in the tube.
• Includes flexible section towards rear of the pipe
• Includes two O2 bungs - one for your primary O2 sensor and one for an optional wideband sensor.
• Designed for optimal flow supporting 400hp

Shipped without a flange on the inlet of the wastegate dump tube, so it can be used with various different setups.

Do you have a dual pump setup in your Evo X and wish you had a good way of triggering the secondary pump? Traditionally, people have used a hobbs switch for this purpose, and while it works, they can be unreliable and a bit clunky. It will often require another bung welded into the intercooler piping, extra wires and hoses running through the engine bay, and it's just not as tidy as most people would like it to be.

We teamed up with ripnet and came up with a great new solution. This kit allows tuners to trigger a secondary fuel pump based on load using ECUFlash. The kit includes a plug and play connector and a software patch for your ECUFlash ROM.

Requirements:

• Must use a supported ROM ID. The supported IDs are listed below.
• The car must run a 3 port boost control solenoid connected to the brown connector.
• The factory 2-port solenoid which uses the black connector must be unplugged.
• The car must be an Evo X, this specific kit will not work on a Ralliart
• A secondary fuel pump must be installed and wired up with a relay. The secondary pump should not automatically run when the car is started.

Here's how it works:

1. Plug the provided cable into the black connector which was originally connected to the black 2-port boost control solenoid.
2. Run the wires through the car to the relay which controls the secondary fuel pump.
3. Connect the blue wire to 86 on the relay and the red wire to 85.
4. Go to this website and generate a license key with the coupon code that you were provided. Note that this will require your VIN number.
5. Download the appropriate XML for your ROMID here.
6. Open the downloaded file in a text editor such as notepad.
7. Select all of text in the file by pressing CTRL+A, and copy it by pressing CTRL+C
8. In a text editor, open the XML file that matches your ROMID in following folder (note: this may require Administrator permissions on your PC): "C:\Program Files (x86)\OpenECU\ECUFlash\rommetadata\mitsubishi\evo"
9. Before the "</rom>" closing tag in the end of the file, paste the text from the downloaded file by pressing CTRL+V
10. Save the file. If the file won't save, be sure your have Administrator rights to that folder.
    
11. Launch ECUFlash and open your ROM file.
12. Scroll down until you see "Secondary Fuel Pump"
13. Open "Secondary Fuel Pump - Data", and press the "+" sign to make it say "Data Present".
14. Open "Secondary Fuel Pump - Function Call", and press the "+" sign to make it say "Data Present".
15. Open " Secondary Fuel Pump - License Key" and enter the License Key that you generated.
16. (Optional) Open "Secondary Fuel Pump - Intercooler Sprayer Enabled" and use the "+" and "-" keys to toggle whether or not you want that feature enabled. This will trigger the intercooler sprayer light on your dashboard to turn on when the secondary pump is being fired.
17. Open "Secondary Fuel Pump - Load vs RPM" - Set the load points for when you would like the secondary pump enabled at various RPMs.
18. Open "Secondary Fuel Pump - Load Hysteresis" to edit the hysteresis of the trigger.

Currently Supported ROM IDs:

• 52680022 (GSR 08-09)
• 56890013 (GSR 2011)
• 59580004 (GSR 13/15/FE)
  

Note: These will work with the Tephramod v1-3 versions of these ROMs (i.e. replacing the third to last number from 0 to 1, 2 or 3). For example, the Tephramod v3 ROM ID 52680322 will work the same as the standard ROM 52680022.

ROM IDs Currently in Development:

• 52690022 (MR 08-09)
• 55570006 (GSR 2010)
• 55580006 (MR 2010)
• 58010005 (GSR 2012)
  

Other ROMs can be added upon request.

Modern cut T-Shirt with our updated logo on the front and the back shoulder.

Silver colored tee with three-color print.

Tultex brand shirts, pres-shrunk, 100% cotton.

These shirts run a little on the large side, and are a generous length.

Tired of your lower coolant hose and thermostat outlet always getting in the way of your hopes for a nice big downpipe or intercooler piping? Finally, we have your solution.

This kit contains a purpose built silicon hose and straight water outlet neck to route things safely out of the way.

Only available in black.

Titanium Steel spark plug cover for the Evo X, Ralliart, and Lancer.

Designed for optimum fitment with the oem aluminum valve cover, this spark cover not only looks great, but isolates the coil packs from the heat of the exhaust manifold and turbo. Bolts on in seconds. Includes stainless steel hardware.

Ready to upgrade your restrictive, cluttered OEM intake to a single piece, 3" mandrel bent free-flowing, great sounding CAI? Now's your chance!

This high quality intake system is available in powder coated aluminum. The cone filter sits in the driver's side fender well to pull cold, clean air.

This kit features:

• Black Coupler
• High quality stainless steel T-Bolt clamps to ensure a secure fit and no damage to your coupler
• A quality cone filter, ensuring both maximum airflow and dirt filtration
• These are currently only available in a wrinkle black finish on aluminum piping.

Benefits of this intake include:

• Improved throttle response
• 15hp power gain
• Opens up the engine bay
• Smoother power throughout the RPM range
• Awesome sound
• A show-quality piece to set your engine bay apart from the crowd.
• A part that will last the lifetime of the car.
• Silicone hose couplers available in Black, Blue, and Red!
• Since the stock MAF housing is retained, it will have no ill effects on your idle or driveability.

Installed Photos:

Click here for installation instructions!

Upgraded intake piping for the 991.2 3.0T Carrera / T / S / GTS

Our Intakes are made from 3" Stainless Steel as opposed to the plastic piping used in the factory setup. The kits include:

• 2 x Mandrel Bent Stainless Steel 3" Intake Pipes w/ brushed finish - MADE IN USA!
• All necessary clamps (6 x Large Clamps, 2 x Small Clamps)
• 2 x Hump couplers
• 2 x Transition couplers
  

CURRENTLY TAKING PREORDERS! PREORDERS WILL SHIP Q1 2025. TAKE ADVANTAGE OF OUR $500 DISCOUNT FOR PREORDERING WHILE SUPPLIES LAST!

Our aim was to produce the best commercially available turbo kit for the Evo X, and here it is. Designed to maximize response, power, reliability, and ease of installation.

Features include:

• Garrett G30-770 or G30-900 Turbocharger in the A/R of your choice. G35 Turbos may be available as a future option. Turbo will arrive modified with an aluminum elbow and vanjen flange welded to the compressor outlet.
• Single scroll V-Band turbo inlet and V-Band turbo outlet.
• Top mounted turbo for ease of access.
• 1.5" Stainless Steel tubular manifold
• The first and only kit with 50mm external wastegate for optimum boost control.
• Stainless steel braided wastegate line to prevent melting, overboost, and subsequent engine failure.
• Stainless steel braided turbo coolant return line to prevent melting and loss of engine coolant.
• Aluminum hard line for turbo coolant feed line to prevent melting and loss of engine coolant.
• Oil return line half constructed of stainless hard line and half stainless steel braided line for durability, flexibility, and ease of installation.
• The first and only kit with a true 4" intake and MAF flange. Includes a velocity stack and an intake heat shield. Available with and without BPV recirculation port.
• The first and only kit with a 3.5" downpipe. Available in a either a 2-Bolt exhaust flange or a V-Band flange.
• The first and only kit that uses vanjen style quick-release clamps. These clamps add flexibility to the system as well as reliability due to the fact that silicon couplers can fail due to heat exposure, leaving you stranded. They also allow for a quick and easy removal of the UICP and the intake. Simply press the release buttons and open the clamp.
• Upper Intercooler pipe with vanjen clamp.
• Wrinkle black powder coating on intake and UICP.
• Designed to function with our Firewall Heat Shield XXL, which is strongly recommended.
• Titanium Spark Cover recommended.
• Installation guide included
• Initial tuning shows 500whp on 93 Octane @ 27psi on an Evo X MR, all while hitting peak boost at around 4500rpm! Tests done with a G30-770 Turbo with .83 A/R. Expect about 10% extra power on a GSR, and even more power on E85. 
• Two year warranty on all SpeedCircuit fabricated parts*. 
• All SpeedCircuit parts MADE IN USA!

Overview of the prototype turbo kit. Production kits will vary slightly:

*Warranty details:

• Warranty period begins on ship date.
• Warranty only covers defects or failures due to design or fabrication.
• Warranty does not cover abuse, accidental damage, or mis-installation.
• Warranty only covers SpeedCircuit brand parts and does not include turbocharger, wastegate, or any component produced by a third party.
• Customer is responsible for shipping the failed part to us for repair or replacement.
• Warranty does not cover labor.
• Warranty does not cover cosmetic damage.

Our SpeedCircuit High Output Catpipe delivers virtually the same performance as our decatted testpipe without any of the smell and the ability to while being conscious of emissions. This is the perfect solution for enthusiasts that want to retain a catalytic converter while not losing any power.

We have a new catted testpipe available for the more discerning enthusiast! We have taken our traditional pipe design and gone with a Vibrant Performance GESI high output cat for maximum performance. With virtually no loss in performance between our decatted pipe and this one, you'll be happy that you paid the premium to keep exhaust smells to a minimum.

This 3D printed guard prevents damage to the USB port/cable on your Tactrix Openport 2.0 dongle.

One common problem with the Tactrix dongle is the mini USB cable being easily snagged when plugged in, causing damage both to the cable and the port itself. This can render your Tactrix unusable!

Simply snap this guard over your Tactrix dongle and use as normal. This will prevent both your cable and USB port from being damaged from a typical snag.

NOTE: TACTRIX CABLE NOT INCLUDED

Replace your fragile, rusted stock valve cover bolts with this beautiful stainless steel bolt kit! Includes all stainless bolts and cup washers in a variety of colors.

• 18 x Colored Cups
• 18 x Long Bolts
• 16 x Threaded Standoffs (two long bolts do not use a threaded standoff)
• 4 x Short Bolts for Coilpacks
• 4 x M6 Washers for Coilpacks

Installation Guide:

Replace your standard stock valve cover bolts with this beautiful stainless steel bolt kit! Includes all stainless bolts and cup washers in a variety of colors.

• 15 x Colored Cups
• 15 x Long Bolts
• 15 x Threaded Standoffs

Installation Video:

This bracket was made for the Mazdaspeed Protege running an upgraded GT2860 series turbo. It was designed to allow the compressor outlet to point downward, allowing for a cleaner path to a front mounted intercooler setup, similar to what was found on our T3 turbo kits.

Made in USA from stainless steel.

These turbos by Tial are a bolt-on upgrade replacement for the factory turbos. Capable of 650-770whp. These are an upgrade for all of the 991.2 3.0L turbo motors including the Carrera, Carrera T, Carrera S, and Carrera GTS.

These are brand new turbochargers and do not require your cores to be sent in. 

You will receive a refund for your cores of $2000 for a functioning K03 Turbo (from a Carrera/T/S) or $2600 for a functioning K04 Turbo (from a GTS).

• M14x1.5 Grade 5 Titanium
• 20pcs total (4 x 17pt locks, 16 x 19mm bolts)
• Standard Length
• Available in bare or burnt Titanium 
• Includes security key
• 33% lighter weight than OEM steel bolts
• Won't rust
• 145,000psi tensile strength

Specify your bore and compression ratio in the order notes.

Please allow 8 weeks for delivery.

Specify your bore and compression ratio in the order notes.

Please allow 8 weeks for delivery.

In general, we recommend .020" over and an 8.5:1 CR.

Our used and open box items are sold as-is! No returns accepted on used or open box items. 

Never used before, was only used to make a templet of the cut down for the fitment of the ETS turbo. 

Our used and open box items are sold as-is! No returns accepted on used or open box items.

Few scratches. Overall good condition. Material is stainless steel. 

Our used and open box items are sold as-is! No returns accepted on used or open box items.

Good condition. Material is stainless steel.