When turbo exhaust backpressure increases, the stock actuator prematurely blows off the seat, softening boost
in the midrange and killing torque. With twice the diaphragm area and spring pressure of the stock wastegate,
Banks BigHead Wastegate Actuator keeps the valve seated longer and achieves a higher peak boost, sooner.
At peak, BigHead opens the wastegate and holds its position, for precise boost control that gives
you crisp acceleration and more mid-range pulling power.
15 Reviews Hide Reviews Show Reviews
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2 Not sure if this is safe or not
Posted by john on Jan 24th 2025
It takes over 30psi to activate this diaphragm in this actuator ... is that safe? Would you be better of just welding the waste gate shut at that point? I bought one of these and it is sitting on the shelf collecting dust. I went with one [kinugawa] that you can change the spring in it to adjust the open up pressure you want.
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5 Awesome
Posted by Steven Henderson on Mar 1st 2024
This big head turbo waste gate really woke my old truck up. Before I could only get about 8-10psi boost. Ow I’m getting 17-19psi boost at WOT.
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5 Banks Big Head
Posted by Justin on Aug 19th 2021
Yes! this thing is king for how small of an upgrade or needed replacement it is.
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5 AWESOME PRODUCT!
Posted by Scott S. on Dec 21st 2020
Easy install and noticable difference from stock.
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5 Banks Big Head Wastegate Actuator
Posted by Robert Ordal on Jul 5th 2020
Came with instructions and all parts required, even the tiny c-clip.
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5 Banks Big Head
Posted by Rick on Apr 4th 2020
You want that turbo to boost. This will Give it.
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4 Big head waste gate actuator
Posted by Bruce on Dec 27th 2019
Got rid of the cold morning surging , truck pulls better at mid range
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5 Big Head Wastegate Actuator
Posted by Cole on Oct 30th 2019
Always quality stuff from Riff Raff, and easy install with the turbo out
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5 Banks BigHead
Posted by Jonathan Lo on Jul 5th 2019
Installation was a breeze since I already had my turbo off (for WW2 install). Preloaded the actuator to the suggested amount. Prior to doing the WW2 and BigHead upgrades, I had put in a Hydra and 4" exhaust. I would notice when I hit about 12lbs of boost, my stock wastegate would start to shudder. With this one, not even close. With the upgrades I've done (Hydra, WW2, BigHead, MBRP Turbo back 4" exhaust, FRX, HPX) I went from topping out at about 18lbs of boost to maxing out at approximately 25psi before my check engine light comes on and the MAF signals to defuel. About $2k worth of upgrades, but definitely worth it.
Riffraff always provides super quick shipping and awesome customer service!
