Thank you for showing the REAL easy way, and saving me some money.”   Joe S. “Hello there, Want a more in-depth explanation? Three step is a third rev limiter essentially and allows you to No Lift Shift. When the fuel is cut to the cylinders it causes a very abrupt cut to the revving of the motor, hence it is called a HARD CUT rev limiter. Some 2 step controllers that you might look into are the following: Want to know more about your particular Make and Model vehicle? On my personal car I have the 2step rev limiter set to 4200 RPM, the main limiter set to 6800 RPM, and the fuel cut set to 10,000 RPM so it never engages. Increase the 2step rev limiter to a higher RPM, b. Consistency is very important when trying to get a high power car out of “the hole” in drag racing. /* 160 x 600 for right column */ Increase the rev limiter to a higher RPM. You would like to build less boost on the line because you are just laying wheel on the line. Meaning if you set your rev limiter to 4200 like I did, then set your ignition retard rev to 3900. For example you could have a rev limiter set up at 4200 RPM and another at 6500 RPM. This content is imported from YouTube. Two-step, and Three-step. var gaJsHost = (("https:" == document.location.protocol) ? All Rights Reserved, For the latest Automotive news and stories visit the websites below. Depending on your settings and how much timing retard you are using, you are essentially exploding fuel in a place it was never intended to be. Check the timing map of the car and make sure that has been dialed in on a good running car. It will all come down to having peak power without washing the tires. So you see, I can’t just tell you some settings and you go put them in, and away you go. A 2 or 3 step is a very good way to build boost off the line and be able to hold boost between shifts. That is the goal for all of us every time, but how to get there will be different for every car. This increased manifold pressure in-turn will spin the turbine and give the engine boost pressure usually never seen on the starting line. a. Pick an RPM where you believe your motor makes peak torque. This is said time and time again, and it is a common misconception. A rev limiter works by either retarding the timing or cutting the fuel to the motors cylinders. d. The turbo is amazingly large in size compared to the engines displacement, so that no matter what you do, you just can’t get enough air, pressure, and heat into the exhaust manifold to spool the monster turbo you have. For short, most people just call it “two step”, but it is exactly as the name implies, it is a rev limiter that instead of just one setting, has two settings that are stepped one after the other. A 2 step rev limiter is a great thing for those with a manual transmission that want to improve there launching with the car. If you can't see the YouTube video above, click here. If you would like to build more boost on the line there are two things you can do: a. The Bee*R is what I will be using, and it is fairly cheap. Unfortunately there is no magic number for every car, and every set-up, because there are so many variables. Be sure to not stay on the 2step limiter too much. This is based on the size motor, size turbo, tire size, dif on the car, suspension set-up, and many more. An aftermarket two-step rev limiter lets you set one (lower) limiter for launch, and a higher limit for when you're upshifting as you accelerate away.             Don’t have any questions, just wanted to say thanks for putting this info out there.  So much mis-information on forums, good to read some solid info. This way the exhaust pressures and temperature never build up for too long. Not dancing. Turn the 2step rev limiter to a lower RPM where the motor makes less torque. It has one purpose in mind, making lots of noise and propelling you forward as fast as possible. The 2 step rev limiter can be a very dangerous thing. c. If boosted, decrease the difference between your target 2step RPM and the ignition retard RPM. Below in the article, I will talk about how you go about choosing the ideal settings for each of these parameters. Anytime you can decrease the number of variables to something, you will gain consistency. Basically, it all boils down to ignition control. Meaning that is it not stepped, but instead just one RPM setting that when hit, is just held there. This is called a soft cut since the motor slowly starts to loose power, and will not continue to rev higher. Step 3: Set the ignition retard rev to a few hundred RPM less than your desired RPM to start with. Step2: Based on the RPM you chose set the fuel cut to an astronomical level so the fuel cut never steps in. An aftermarket two-step rev limiter lets you set one (lower) limiter for launch, and a higher limit for when you're upshifting as you accelerate away. Car launches great but once the 2step rev limiter turns off and the engine is allowed to rev and make full power the wheels just break loose killing your time. Exhaust manifolds and wastegates can crack from the extreme pressure and heat, also valves can drop or become warped, and who knows what else.