Product Name:  
Mitsubishi Dual port  
Product Description:  
Fits Lancer EVO VII – X  
(7 - 10), Ralliart Colt  
Product Number:  
TS-0205-20  
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IMPORTANT NOTES:  
Please thoroughly read and understand these instructions before commencing this installation.  
The thread on the cap for the vacuum source is AN#3. The standard swivel nipple can be changed to a AN#3 fitting if desired.  
RECOMMENDATIONS  
Turbosmart recommends that your Blow off valve (BOV) is fitted and adjusted by an appropriately qualified technician  
Turbosmart recommends that a boost gauge be permanently fitted to the vehicle  
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HOW TO INSTALL YOUR BOV  
Please check that the following items have been provided in your Mitsubushi Dual port kit.  
Quantity  
Description  
Mitsubishi Dual port BOV  
Port Blanking plug  
Use  
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1
2
1
Model Specific blow off valve  
To blank off a port to convert the BOV to full atmospheric or plumb back  
To secure the vacuum lines to the BOV and the engine  
To connect vacuum source to the BOV  
6mm Hose clamps  
400mm of 5mm Silicone vacuum line  
1) Installation on a EVO (Diagrams are from a Mitsubishi Lancer EVO X)  
1)  
Remove the two hose clamps holding the standard BOV to the piping  
Loosen  
Loosen  
2)  
Remove the piping and vacuum line off the standard BOV  
Inlet to BOV  
Plumb back return  
1
3)  
Remove the standard vacuum line and replace it with the provided silicone vacuum tube. Secure the end with a hose clamp  
Remove  
Push provided hose onto  
vacuum supply barb  
4)  
Install the Turbosmart Dual port BOV in the same orientation as the standard BOV. Secure the hose ends with the standard  
hose clamps and insert the vacuum line into the vacuum port of the BOV securing it with the supplied spring clamp. Start the  
engine and check for leaks around the piping.  
Note: The Dual port is supplied with a blanking plug for the vent to atmosphere side of the BOV to convert the BOV to full recirculation  
mode. Simply unscrew the trumpet and screw in the supplied blanking plug. Alternatively, the blanking plug can be used to convert the  
BOV into full vent to atmosphere mode by installing the blank onto the plumb back side. An additional 34mm hose blank (sold  
separately) is required to block off the plumb back hole in the intake pipe.  
ADJUSTING YOUR BOV  
Each BOV needs to be adjusted to suit the vehicle it is being mounted on. The aim of the adjustment on Vee Port’s, Supersonic’s and  
Dual ports 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. Plumb back BOV’s are equipped with a spring which are designed to keep the piston open at engine idle and hence the  
cap can be left in the middle position.  
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 first O-Ring indicator 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 piston – the 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  
MAINTENANCE  
Turbosmart recommends that the following maintenance procedure is carried out at six monthly intervals or at higher intervals if the  
environment is very dusty or wet. Regular maintenance will ensure that your BOV is operating at its peak performance and will extend  
the working life of the product.  
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Remove the cap of the BOV by rotating in an anti-clockwise direction CAUTION, the cap is under spring force, remove with  
care!  
Carefully remove the piston and thoroughly clean the piston and the bore of the BOV  
Inspect the surface of the piston and the bore of the BOV for scoring or excessive wear, silver coloured marks on the bore are  
an indication of excessive wear  
Check the Base O-ring and the Cap O-ring for any damage – replace if necessary  
Lubricate the bore and the piston with Uni-Glide™, hydraulic oil or sewing machine oil – DO NOT use grease or viscous oils  
Re-assemble the BOV in the reverse order  
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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 intercooler flange and the BOV. Make sure the supplied gasket is installed and the BOV Flange  
is secured on the intercooler flange with the two factory bolts.  
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Ensure the spring clamps are secured on silicon hoses and fittings.  
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TURBOSMART  
ONE YEAR LIMITED WARRANTY  
Turbosmart is a company built on Customer Satisfaction and Service. That is why all of our products go through regimented test procedures before they are packaged and  
shipped. Turbosmart stands behind its products for one full year after purchase. Terms of Warranty, Service and Returns are as follows:  
Limited Warranty: Turbosmart warrants its products to be free from defects in material and workmanship under normal use and if properly installed for a period of one  
year from date of purchase. If found to be defective, it will be replaced or repaired if returned prepaid along with proof of date of purchase. This shall constitute the sole  
remedy of the purchaser and the sole liability of Turbosmart to the extent permitted by law, the foregoing is exclusive and in lieu of all other warranties or representations  
whether expressed or implied, including any implied warranty of merchantability or fitness. In no event shall Turbosmart be liable for special or consequential damages.  
This warranty is only valid on products purchased from Turbosmart Authorized Dealers.  
Service: After the warranty period has expired, repair service is charged based on a minimum and maximum charge rate. (Contact Customer Service for current rate).  
Returns: When returning a Turbosmart product for repair, it must be accompanied by a completed Customer Warranty Form and RMA number. To access this form  
please go to our website www.turbosmartonline.com and you will find it on the Downloads page.  
THE TURBOSMART PLEDGE  
DO NOT USE ANY TURBOSMART PRODUCT UNTIL YOU HAVE CAREFULLY READ AND UNDERSTOOD THE FOLLOWING AGREEMENT.  
Please call if you have any questions or do not understand this agreement. Refer to our brochure, website or catalogue for terms and conditions and further information  
regarding your product. Turbosmart appreciates your business and pride ourselves on our customer service. We are always happy to offer you advice and will provide you  
with help in any way we can. The purpose of this agreement is to avoid any problems or hard feelings.  
We sometimes make mistakes, as do our dealers, distributors and suppliers. Even customers can sometimes order the wrong parts. Do not use, modify, install, trial  
assemble, nick, drop, scratch or adjust any part until you first check for any damage. Damage must be reported immediately. NO EXCEPTIONS. If there are any  
components missing please contact your authorized reseller immediately upon receipt of your shipment. Missing components must be reported within five (5) business  
days of receipt. Parts returned for any reason MUST BE IN RESALABLE CONDITION. It is YOUR responsibility, “THE CUSTOMER” to carefully package any returns to  
avoid shipping damage. Insurance is highly recommended. Credit cannot be issued for damaged goods.  
Turbosmart warranties the quality of the products it designs and manufactures to be free of defects in material and workmanship. This limited warranty is extended only to  
the original purchaser and may not be transferred or assigned. This limited warranty applies to any product, which after careful inspection by Turbosmart, after receipt of  
the product from our authorized reseller, is found to have a defect in either material or workmanship. Any modifications to the product will void any and all warranties and  
will not be exchanged. Before installation, check new car warranty. Turbosmart is not responsible for voiding any original manufactures warranty.  
All warranty claims must be returned to the nearest Turbosmart Office, you must return the product and sales receipt, at your own expense, accompanied by the Customer  
Warranty Form stating the reason for the claim. Proof of purchase must be provided with any warranty claim and will be verified with the authorized reseller from which the  
product was purchased.  
If all the above procedures are followed, and the product is found to be defective in either workmanship or material, Turbosmart shall either repair or replace the product, at  
its sole discretion, and sole cost. This limited warranty does not cover or apply to any personal injury, labor charges or any other incidental costs or damages caused by  
the defective product. The individual purchaser acknowledges and agrees that the disclaimer of any liability for personal injury is a material term for this agreement and the  
individual purchaser agrees to indemnify Turbosmart and to hold Turbosmart harmless for any claim related to the item of the equipment purchased. Under no  
circumstances will Turbosmart be liable for any damages or expenses by reason of use or sale of any such equipment.  
THIS LIMITED WARRANTY IS THE ONLY EXPRESS WARRANTY, WHICH APPLIES TO TURBOSMART PRODUCT AS EXPRESSLY GIVEN IN LIEU OF ANY OTHER  
WARRANTY EXPRESSED OR IMPLIED, INCLUDING THAT OF MERCHANTABILITY. ANY IMPLIED WARRANTY INCLUDING THAT OF MERCHANTABILITY AND/OR  
FITNESS FOR A PARTICCULAR PURPOSE IS HEREBY LIMITED BY THE SAME TERMS AND TIME LIMITATIONS SET FORTH IN THIS LIMITED EXPRESS  
WARRANTY AND OTHERWISE EXCLUDED. EXCEPT FOR THOSE OBLIGATIONS ASSUMED HEREIN, TURBOSMART ASSUMES NO OTHER OBLIGATIONS IN  
CONNECTION WITH THE SALE OF ITS PRODUCTS.  
IN THE EVENT THAT THE INDIVIUDAL PURCHASER DOES NOT AGREE WITH THIS AGREEMENT THE BUYER MAY PROMPTLY RETURN THIS PRODUCT, IN A  
NEW AND UN-USED CONDITION, WITH A DATED PROOF OF PURCHASE, TO THE PLACE OF PURCHASE WITHIN SEVEN (7) DAYS FROM THE DATE OF  
PURCHASE FOR A FULL REFUND. THE INSTALLATION OF THIS PRODUCT INDICATES THAT THE INDIVIDUAL PURCHASER HAS READ AND UNDERSTOOD  
THIS AGREEMENT AND ACCEPTS ITS TERMS AND CONDITIONS.  
Happy motoring!  
The Turbosmart Team.  
Head Office: Turbosmart Pty Limited, PO Box 264 Croydon, NSW, 2132 Australia  
USA Office: Turbosmart USA, 1185 Park Center Drive, Suite Q, Vista CA 92081 USA  
Ph: +61(2) 9798 2866  
Ph: (760) 727 7610  
Fax: +61 (2) 9798 2826  
Fax: (760) 727 7963  
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