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Our intake system utilizes a stock size MAF housing that doesn't require any retuning. You can bolt this on and notice immediate performance gains! Our intake also utilizes a custom billet 5" velocity stack to help funnel as much air as quickly as possible through our intake. This combined with a huge K&N filter gives us the most filter surface area and flow possible. The filter is specifically placed to allow the use of the factory ram air duct. If you want to keep things looking stealthy under the hood we also have an airbox available as well (You can select this from the drop downs below). This helps to isolate the intake from the hot engine bay temps and provide the coldest and most direct intake charge. Backed by a lifetime warranty and the best customer service in the industry. You can buy this knowing it's going to fit and perform better than anything on the market.
We've designed our ETS 2015+ WRX intake to work with the factory tune, but for maximum performance, we still recommend a pro tune.
Above is a log file showing the difference between the factory tune with stock intake and the factory tune with an ETS intake. You can see the difference is .5 AFR leaner, which is still a safe AFR.
We also have a great testimony from Junior Barrios (JR Tuned) referencing power gains from installing JUST our ETS intake system.
"This car was tuned with the stock airbox setup, then again with only the addition of an ETS intake.
Very basic pump gas car and as you see the gains from the intake are substantial. Car is also overall safer now since it takes less effort to make power.
The only alteration to tuning between the two graphs was boost control. I had to lower the wastegate duty cycle to bring the boost back down to where I tuned it with the stock intake. It was over boosting by almost 4psi, but that would be a given since it €™s now able to actually pull in the air easier."
-JR Tuned