GReddy BRS-503 Instruction Manual Download Page 6

 

 

 

  

 

6-

 

(6)

 

Remove  the  lower  bolt  from  the  factory 
relay bracket and mount the blow off valve 
assembly  as  shown  with  provided  blots 
<NO.7>. 

 

(7)

 

Connect  the  air  bypass  hose  to  the  blow 
off  valve  adapter  using  the  factory  hose 
clam as shown. 

 

(8)

 

Connect  the  factory  air  bypass  valve 
vacuum  hose  to  the  top  of  the  blow  off 
valve. 

    
 
 
 

 

 

(1)

 

Inspect the installation. Reconnect the negative terminal of the battery and start the engine. 

(2)

 

Check and make sure that there no air leeks, clearance problems or irregular sound. 

(3)

 

Lightly rev up the engine couple times to check if the blow off valve is operating. 

 

 

 

    

If irregular idle or engine stall occurs, loosen the M6 lock nut and turn the adjustment screw to 
HARD

HARD

HARD

HARD until the problem is eliminated. 
After the adjustment, tighten the lock nut to secure the setting. 

 

The adjustment is preset to the softest position form factory. Do not turn it further out that 

this position.   

 

Make  sure  to  loosen  the  lock  nut  before  making  adjustment.  Turning  the  adjusting  screw 

without loosening the lock nut will strip out the top housing. 

 

When the adjustment screw is turned in, the stock of the valve decreases. Screwing it in too 

far will affect the proper operation of the valve. 

 

When  venting  the  outlet  to  the  atmosphere,  depending  on  the  application,  the  airflow  meter 
voltage can drop enough to stall the vehicle when the blow off valve is discharged. 
If adjustment of the top screw cannot prevent the engine stall, install e-Manage system and use 
the Anti Engine Stall feature or reroute the discharge outlet back into the intake system after 
the airflow meter. 

 
 

If the engine stalls while operating the vehicle, the steering and the 
Brakes will not operate properly and can be very dangerous. 

Warning

Warning

Warning

Warning    

Adjustment after 

Adjustment after 

Adjustment after 

Adjustment after installation

installation

installation

installation

 

Starting the engine

Starting the engine

Starting the engine

Starting the engine

 

Vacuum hose 

Relay bracket 

Air bypass hose 

Summary of Contents for BRS-503

Page 1: ...uct product This product is for off road use only This product is for off road use only This product is for off road use only This product is for off road use only MAKE MODEL CHASSIS ENGINE YEAR MAZDA...

Page 2: ...the throttle body On some applications there are possibilities of engine stall if the air is released out to the atmosphere It is recommended to re circulate the sir back in to intake system before t...

Page 3: ...s that are reused and replace any parts that are damaged Installation and reassembly caution Installation and reassembly caution Installation and reassembly caution Installation and reassembly caution...

Page 4: ...1 Remove the factory air bypass valve and air hose connected at the bottom port of the air box Charge relief valve Air Bypass Valve PARTS LIST PARTS LIST PARTS LIST PARTS LIST PARTS LIST PARTS LIST P...

Page 5: ...to the adapter 2 using the provided gasket 5 and bolts 7 as shown 4 Stick the emblem 6 to the top housing 5 Cut the factory air bypass valve hose on both ends as shown and reinstall it back to the co...

Page 6: ...is position Make sure to loosen the lock nut before making adjustment Turning the adjusting screw without loosening the lock nut will strip out the top housing When the adjustment screw is turned in t...

Page 7: ...O ring to the attachment being installed and tighten until the attachment flange meets the blow of body Apply silicone grease before reinstalling the O ring O ring will not require excessive force to...

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