Supra Blow Off Valves

Blow Off Valve

Application Chart and Description

Both the 87-92 Supra and 93+ TT Supra come stock with a bypass valve that will allow the turbo air to be routed back into the intake stream when the throttle plate is closed. Some desire more than this simple system. Whether it's purely for sound or the ability to hold a higher pressure, here are your options.

Sound:

Double Sound due to twin valves.

Here is the high pitched sound small valve (WAV),

Here is the deeper sound of the large valve (MP3) on MK4TT,

Here is a good example of what it will sound like (WAV)

Sound output can be lowered with optional insert.

Notes:

Due to the response and flexibility of this Valve, we recommend it overall. It cannot leak due to the reverse push/pull design. Keep in mind the universal kit does not include the flange you need to weld it together. This BOV in most cases does not have a problem that requires it to be re-circulated due to it's fast action.

Route back to intake:

A separate kit can be purchased to route the output of the BOV back into the intake stream for cars with AFM.

Part Number: 1422-SM01US (BOV return kit w/ hose)

Cost: $45 (retail)

Shop: Call Options Auto Salon , 1 800 678 2886

Pic: CLICK HERE

Part Number: 1421-FIT001 (BOV return fitting only)

Cost: $9 (wholesale price for speedtoys.com) + shipping

Shop: Lightning Motorsports email : orders@lightningmotorsports.com

Tell him jeff at speedtoys sent you.

Pictures:

MK3 Kit Installed Pic

MK4 Kit Installed Pic

Universal Kit Pic

MK3 Custom Install Pic

Part Numbers:

1421-SA001 $225 Universal Valve

1410-SA003 $25 Aluminum weld on flange

1416-ST001 $ MK3 Supra Kit (This kit has a pipe that replaces the stock plastic upper pipe with a metal pipe and BOV flange

1416-ST012 $295 MK4 Supra Kit (This kit has an adapter that goes to the stock BOV hose that allows BOV fitment. The return side will be plugged).

Sound:

Extremely loud single flash of air w/ horn

Sound can lowered by removing horn.

Listen: (Idle Rev on MK4 TT without horn)

Listen: (Driving on MR2 T without horn)

Notes: Keep away from the older series as they are slower to respond and have problems with Toyota type AFM systems. This valve can be routed back into the intake stream but would require a custom welded flange.

MK3 Installed Pic

MK4 Installed Pic

PN# Universal Blitz Kit (About $199)

Racing Type 2

This is the choice for the high horsepower crowd. This blow off valve can flow. It is a racing type so it is designed for re-circulation. This HKS version can hold quite a bit of boost.

This sound is not much more than a swoosh of air. Due to the high tension nature, lots of funny compressor surge sounds are often heard.

Notes:

There is no kit for this valve. It must be custom installed.

TYPE S

Sound:

Output changes according to boost. Has a single whoosh sound but is followed by a high pitched whistle that hangs if set very softly. When operated under high boost the sound turns into a high pitched shooting sound, almost like a laser.

Notes: Contains a second port to help prevent leaking under high boost. These valves have a tendency to wear out over time, but are very good for those on a budget. These can be routed back into intake via screw in adapter. It is commonly acknowledged that this valve is for applications under 15 psi.

MK3 Kit Installed Pic

MK4 Kit Installed Pic

Universal Kit (including flange)

PN# 11511050 $244 MK4 Kit (This kit provides a long hose that runs to the stock bov location, the return side is then plugged)

PN# 11511011 $240 MK3 Kit (This kit replaces the rubber hose closest to the fender and keeps the stock BOV in place)

PN# 11501650 $199 Universal Install Kit (Suprastore.com)

PN# 11900481 $15 Re-Route Adapter 16mm

PN# 11900482 $15 Re-Route Adapter 19mm

PN# 11900483 $15 Re-Route Adapter 29mm

PN# 99900061 $80 Replacement Diaphragm

TYPE R

Sound:

Only loud under high boost. Due to the large diameter of the piston and the output port, the sound is not very high pitched. Has somewhat of a deep air release sound.

Listen under low boost (WAV)

Notes: Contains secondary port to prevent boost leakage under high boost. Has a high range of adjustability and a standard or race spring available. It's recommended that you are running at least 15 psi or more to take advantage of this valve. Output can be routed into intake via screw in adapter. There is no supra specific kit, but the Greddy Type S mounted kit can be used if desired.

Universal Kit

PN# 11501660 $229 Universal Kit (Alamo Motorsport)

PN# 11900490 $13 Re-Route Adapter 40mm

PN# 11900491 $13 Re-Route Adapter 45mm

PN# 11900470 $16 Re-Route Adapter 20mm

PN# 11900471 $16 Re-Route Adapter 29mm

PN# 99900062 $80 Replacement diaphragm

PN# 11900451 $35 Aluminum Flange

Sound:

Relatively simple quick flash of air sound. Sound output can be changed by turning the red circle base to desired sound level. Can be quite loud but only at a higher boost/airflow level.

Listen on high rev twin turbo (REAL)

Listen during a boost run (WAV)

Notes: While this Twin Chamber valve does work well with 3sgte, it is not popular due to it's boring sound. Has a secondary boost port to help with response.

MK3 Installed Pic

MK4 Installed Pic

Universal Kit (including flange)

PN# 550-A001 (About $200)

(UK)

Sound:

Single flash of air. Sounds similar to older style blitz.

Listen to dump valve from inside the engine bay (mp3)

Notes: Requires a tube type of installation. Custom fabrication is required.

High quality looks and design. These "dump valves" are tested to hold 60 PSI.

PN# DV 26 EVO Dump Valve (To Air) �88.13

$125 shipping included to USA

TYPE S

XSS.jpg (56979 bytes)

Sound:

Whoosh sound, lower pitch. Capable of 106db.

Listen (Wav) at revving

Notes: Anodized stylish look. Adjustable tension with included washers. Designed for applications under 15 PSI. This is a good entry level valve, but requires custom installation.

$129 universal kit, includes weld on adapter

*Get $30 off XS valves at carparts.com. Just click here, automatically applied.

TYPE H