Product Name:  
Product Description:  
BOV Kompact Supersonic Honda CTR  
BOV Kompact Supersonic Honda Civic  
CTR/RS  
Product Number:  
TS-0203-1017  
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IMPORTANT NOTES ON YOUR BOV  
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Turbosmart accepts NO responsibility whatsoever for incorrect installation of this product which is potentially hazardous and can cause serious  
engine damage or personal injury.  
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The Kompact series BOV is designed for use as a factory replacement  
Ensure the engine is cold prior to installation.  
RECOMMENDATIONS  
- Turbosmart recommends that your Blow off valve (BOV) is fitted by an appropriately qualified technician  
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KIT CONTENTS  
Please check that the following items have been provided in your BOV packaging  
Part  
Description  
Turbosmart Kompact Series BOV  
Hose Clamp  
Use  
1
2
3
4
5
Main unit  
Fix plumb back hose to BOV  
M6 Flange Bolts  
Mount BOV to turbocharger compressor cover  
Connect BOV to signal source  
Turbosmart sticker  
Hose  
Turbosmart Sticker  
Figure 1 - Kit Contents  
TOOLS REQUIRED  
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5mm hex key  
Screw drivers  
Pliers  
Socket Set  
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ABOUT YOUR KOMPACT SERIES BOV  
A direct fit high performance replacement for the factory all plastic unit, the Turbosmart Kompact BOV suits the Honda Civic  
CTR/RS. The Turbosmart unit is made of billet aerospace grade aluminium with high temperature seals that allows for minimal  
leakage and a complete seal across the bypass aperture providing as much performance as possible.  
Benefits include:  
Direct fit upgrade for the factory BOV on Honda Civic CTR/RS  
All billet CNC construction and attractive anodized finish  
Manufactured, assembled and validated in-house at Turbosmart HQ  
Straight Nipple  
Connected to the factory  
control solenoid  
Vent to Atmosphere Port  
Only on “Dual Port” Models)  
Vents excess air to  
Flange Mounting Holes  
Bolt to diverter flange  
(
atmosphere  
Flange Slot  
Allow easier fitment on CTR  
Flange  
Bolts up to the flange on the  
Turbo/Intake pipe  
Sealing O-Rings (Underneath)  
Ensures the valve does not leak  
compressed air  
Figure 2 i30N Kompact BOV Overview  
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FITTING YOUR BOV  
After Removing the intake pipe from the CTR, the signal hose  
can be disconnected, and the three bolts removed from the valve.  
Identify Diverter valve location  
1
Identify the location of the factory Diverter Valve assembly, the  
diverter valve of the Civic is located on towards the front of the  
vehicle on the left when viewed from the front, it can be easily  
accessed on the RS variant however some parts will need to be  
removed to allow access on the CTR.  
NOTE!  
It may be required to remove auxiliary components to  
access the diverter valve, ensure you consult your local  
specialist or a service manual for correct disassembly  
procedur
CTR Diverter Valve  
RS Diverter Valve  
Diverter Valve  
Located under air  
box.  
Mount your new Turbosmart Kompact BOV  
3
RS  
Ensure both O-Rings are installed in the bottom of your  
Turbosmart BOV, align the slot in the bottom of the flange with  
CTR Diverter Valve  
Remove the OEM diverter valve  
2
Remove the signal hose from the valve by releasing the spring  
action hose clamp.  
Remove the three bolts holding the diverter valve to the charge  
Bolt down using the supplied bolts.  
CTR  
Screw in one of the supplied bolts into the lowest mounting hole  
for the diverter valve. This only need to be screwed in a couple  
of threads.  
Ensure the O-rings are fitted to the flange of the BOV and slide  
the BOV into position past the heater hose aligning the slot in the  
RS Diverter Valve  
3
flange with the pre-installed bolt. Manoeuvre the BOV to allow  
the other two bolts to be installed. Before tightening down  
ensuring the O-Rings are sitting correctly in the grooves.  
Install Signal hose  
4
Ensure O-Ring is on supplied nipple and screw into the  
cap of the BOV.  
Follow the OEM signal hose to where it meets hard-line running  
over the top of the engine. Remove the factory rubber vacuum  
hose and replace with supplied hose using hose clamps,  
Connect the other end of the hose to your new Turbosmart BOV.  
Trim to length for desired fitment and use supplied cable ties to  
tie the hose in place  
Congratulations, your Turbosmart Kompact Series BOV is  
installed and ready for use. Double check all connections and  
mounting screws. Start your engine and check for leaks.  
ADJUSTING YOUR BOV  
The aim of the adjustment on the Dual port is to make sure that the piston is hard closed at idle and that the piston closes fast enough  
to minimise backfiring and not stall the engine. In most cases, the cap is in the correct position from factory.  
INSTALL THE BOV WITH THE FACTORY SETTING FIRST BEFORE PERFORMING ANY ADJUSTMENT.  
Adjustment to the BOV is made by rotating the cap. To increase the spring force on the piston, rotate the cap clockwise in the direction  
of hard as marked on the top of the cap. To decrease the spring force on the piston, rotate the cap anticlockwise in the direction of  
soft as marked on the top of the cap - CAUTION - Do not rotate the cap beyond the O-Ring groove.  
Start with the BOV cap at the maximum soft position (The indicator O-Ring should be completely covered by the edge of the cap)  
With the engine at idle the exhaust port should be closed off by the pistonthe piston should be hard against the seat and not  
floating or moving  
Free rev the engine and back off quickly, the engine should return to normal idle speed if the engine drops below idle or stalls  
increase the spring tension by one turn  
Repeat this process until the engine free revs and returns to normal idle speed  
Test drive the car and ensure that when decelerating or changing gears that the engine has minimal backfiring and no stalling. If  
backfiring is excessive or stalling is noticed then check all connections made during the installation, otherwise increase the spring  
tension  
TROUBLE SHOOTING  
The following points should be checked if you find that your engine is dipping below normal idle, stalling or if the BOV is functioning  
poorly. Please note: the following checks will cure 99% of problems experienced with a BOV.  
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Check the vacuum hose for splits, cracks, loose connection, kinking or any obstruction old or fatigued hose may collapse  
under vacuum causing an obstruction.  
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With the engine running remove the vacuum / boost hose from the nipple in the cap of the BOV, there should a loud hissing  
sound. The engine should idle poorly, double check by covering the end of the hose with your finger otherwise the hose is  
blocked.  
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Check to see if the BOV is blocked or contaminated with dirt or debris.  
Ensure that the vacuum / boost source is not shared and that the vacuum source is directly from the inlet manifold.  
Check the seal between the charge pipe flange and the BOV. Make sure the supplied O-Rings are installed properly and  
the BOV Flange is secured on the compressor cover flange with the 3 supplied screws.  
Ensure the spring clamps are secured on silicon hoses and fittings.  
If the valve does not open properly or is slow to react, it could be due to the mapping of the drive by wire system from such  
things as aftermarket chips and engine tunes. Check with the tuner that the mapping of the throttle is the same as OEM.  
The valve may not open if the engine is just free reved. Check that the valve operates by driving the vehicle.  
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