Product Name:  
4 Port solenoid  
Product Description:  
Product Number:  
Eboost2 4 Port solenoid kit  
TS-0301-2003  
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ABOUT THIS PRODUCT  
Your four port solenoid is designed to allow you to have a large range in boost pressure settings when using an e-boost and  
an external wastegate.  
The four port solenoid can be used with either the e-boost or e-Boost2 electronic boost controller.  
The external wastegate has a top and bottom port as described in the diagram below. Pressure on the bottom port opens the  
wastegate valve and pressure on the top port holds the valve closed.  
When the four port solenoid is de-energized it feeds pressure to the bottom port and exhausts the top port of the wastegate.  
When energized it feeds pressure to the top port of the wastegate and vents the bottom port.  
In this way the controller can add pressure to the top of the wastegate and effectively add to the wastegate spring pressure so  
a higher boost pressure can be achieved using a soft wastegate spring.  
IMPORTANT NOTES  
Set your minimum boost pressure by choosing a wastegate spring pressure that will give you your desired minimum boost  
pressure with the e-Boost set point at a low value.  
By increasing your next set point value on the e-Boost the four port solenoid will feed more pressure to the top port of the  
wastegate and raise your boost pressure to levels much higher than your wastegate spring pressure. IMPORTANT: Refer to  
e-Boost instructions for full details on setting your boost pressure.  
Changing your connection method can cause a higher than expected increase in boost pressure.  
RECOMMENDATIONS  
Turbosmart recommends adjusting your e-Boost back to its minimum setting and measuring the new minimum  
boost pressure achieved by the new setup before increasing your boost again.  
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HOW TO INSTALL YOUR 4 PORT SOLENOID KIT  
Please check that the following items have been provided with your four port solenoid.  
Qty  
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Description  
Four port solenoid valve  
6mm barb nipples  
Use  
Optional Accessory for use with Turbosmart e-boost & e-boost2  
Screw into solenoid valve body & connect to silicone hose  
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TO INTAKE SIDE OF TURBO  
“FOUR PORT” CONNECTION METHOD  
Port (A)  
Connect the four ports on the e-Boost four port solenoid according  
to the diagram as follows.  
Port (EX)  
Port (IN)  
Top Port  
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Port (A) connects to the “Top” port on the Waste-Gate.  
Port (B) connects to the “Bottom” port of the Waste-  
Gate.  
Bottom Port  
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Port (IN) Connects to a “boost only” pressure source,  
typically from the compressor housing on the  
turbocharger. If your turbocharger does not have this  
fitting, connect to a “boost only” pressure source before  
the throttle-body or butterfly. Do not connect to the  
intake manifold, as the pressure signal will have both  
vacuum and boost pressure.  
Port (B)  
BOOST ONLY SOURCE  
Port (EX) vents pressure from the e-Boost solenoid.  
Connect this hose to the intake side of the turbo,  
between the air cleaner and the inlet on the front of the  
turbocharger. Otherwise connect a short piece of the  
silicon hose and face the vent downwards to stop water  
or debris entering the solenoid  
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PORT (EX) - TO INTAKE  
PORT (A) – TO TOP  
SIDE OF TURBO OR VENT  
PORT OF WASTEGATE  
PORT (B) TO BOTTOM  
PORT OF WASTEGATE  
PORT (IN) - BOOST ONLY  
PRESSURE SOURCE  
If you are unable to achieve your desired boost pressure it is normally due to exhaust manifold backpressure forcing the wastegate  
valve open. To increase your maximum boost pressure further, fit a heavier wastegate spring to increase your minimum & maximum  
boost pressure. If you are still unable to achieve your desired boost pressure ensure that your turbocharger is correctly sized for your  
application.  
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 authorised 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 Pty Ltd 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 Pty Ltd, after receipt  
of the product from our authorised 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 Pty Ltd is not responsible for voiding any original manufactures warranty.  
All warranty claims must be returned to the authorised reseller, you must return the product and sales receipt, at your own expense, accompanied by a letter stating the reason  
for the claim. Proof of purchase must be provided with any warranty claim and will be verified with the authorised 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 Pty Ltd 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, labour 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 Pty Ltd and to hold Turbosmart Pty Ltd harmless for any claim related to the item of the equipment purchased. Under no  
circumstances will Turbosmart Pty Ltd 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 PTY LTD 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 PTY LTD 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 SIXTY (60) 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  
Turbosmart Pty Limited P.O.Box 264 Croydon, NSW, 2132 Australia ABN: 69 081 069 794  
Tel: +(612) 9798 2866 Fax: +(612) 9798 2826 Email: [email protected]  
www.turbosmart.com.au www.turbosmartusa.com www.turbosmart.co.nz  
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