Turbosmart Internal Wastegate Actuator - 18PSI | 2008-2015 Mitsubishi Evo X (TS-0601-3182)

Rating: 4.94 out of 5.0 (16)
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Mitsubishi Evo X 18psi Internal Wastegate Actuator by Turbosmart

Designed like any Turbosmart product, with the highest of quality and precision, the Internal Wastegate Actuators (IWG) provide better turbo response and greater sensitivity when managing boost pressures. Each IWG is adjustable with several spring options and packaged in a kit form so they can be fitted as a direct bolt-on replacement for the factory part. It can't get any easier!


  • Silicone diaphragm with Nomex reinforcement to withstand high temperatures.
  • High grade, billet aluminum construction.
  • Stainless steel rods and connecting clevis for corrosion resistance.
  • Locking Collar design cap allows for quick spring changes.
  • 18psi Base Pressure Springs


  • 2008 - 2015 Mitsubishi Evo X

What's In The Box?

  • 1 - Turbosmart 18psi IWG Actuator
  • Necessary Hardware


  • Manufacturer Standard Warranty

Customer Reviews

Based on 16 reviews
Javier Martinez
Easy Install, worthy purchase.

Easy install, totally worth it. It holds boost much better and the change is super noticeable after a tune.
MAP always coming through with the fast shipping!


Came fast and was easy to put on

Tyrone Shields
Easy install

Very easy install , great product and quality. Definitely Worth the buy.

Good product

Quick and fast shipping. Awesome quality and craftsmanship. Just waiting to install this and get a tune.

Dialing in requires attention, but the device is well-built and snappy.

For the Turbosmart Actuator I found the included instructions helpful, and installation fairly simple (I've removed the stock one for downpipe replacement so I was already familiar with the process), but my end result was inaccurate with a consistent 22PSI blow-off using the recommended 2mm of pull.

Having said that I was debating between the 18PSI and 22PSI units so I didn't bother dialing it in since I needed to readjust my control map regardless of the setting having come from the stock actuator. It's possible I actually received a 22PSI unit in the box; I didn't verify by part no. Again for my case I am not concerned.

Otherwise it's solid and well-built compared with the stock unit with a much beefier bracket and has been reliably responsive with no more than about 9% spike: it never releases lower than 21 ½ and never holds harder than 24, which on a fast gear like 2nd where boost can build very quickly is about as responsive as you can get. You can actually run a healthy breathing (i.e.: IC, DP, full exhaust) but stock turbo Evo with this and an empty reactive wastegate map all day and be fairly happy (~320 whp give or take). The release response is snappier than stock with a slightly more pronounced "pssshht", but nothing you'd really notice unless you were looking for it.

I'm told it "holds pressure" better than stock; I am getting better response and carrying a little more PSI through the top end (as much as +3 pounds through 6000-7000), but I also replaced my IC at this time and I can't properly attribute the improvement to either part. More likely the upgrades were somewhat complimentary.

All told a nice addition to any Evo-in-Progress.