TiAL Sport MVS External Wastegate 38 mm - V-Band, Complete Spring Set, Black

How do I choose the spring setup?

• Set the springs for the lowest boost you want, because an external boost controller can only raise boost above the spring rating. Springs of different outside diameter can be combined, and the resulting pressure is the sum of the springs installed; the spring chart lists each one.

Do I need to connect the coolant ports?

• It is recommended. Using the water cooling ports can significantly increase wastegate lifespan.

How should I test it before installing?

• Use regulated shop air with an accurate gauge on the lower actuator port only, raise pressure slowly and watch the valve. It should begin to open near the spring pack rating; never exceed 2 bar. Test again after every spring change.

Is air escaping past the valve stem on the bench a fault?

• No. There is no positive seal between the stem and guide, so some air past the stem during bench testing is normal and does not affect function on the engine. The upper diaphragm chamber should not leak.

What is it made of?

• Stainless steel and aluminum: a CNC-machined aluminum actuator housing, a housing and valve cast and machined in house, a coated valve stem and a Nomex-reinforced silicone diaphragm. The diaphragm chamber has M10 signal ports, two on top and three on the bottom.

Shipping

• In stock orders typically ship within 1 to 3 business days.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Special order items follow a lead time we confirm with you individually before the order is committed.
• Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
• Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
• Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
• Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
• Product images may be representative. The SKU and specifications in the listing are what ships.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty