what exactly is this? i did search but only found whare to buy. dont understand what they mean by a 2step. its like a rev limiter right?

 

I can only speak on my own experiences with the 2-step built into Neptune.

You rev to whatever RPM you would like to engage the 2-step at, hold it at that RPM and then floor it. You then bounce off a limiter at that RPM.

Useful in consistent launches, building boost off the line, etc.

Hope that helps.

 

It's basically a rev limiter used to launch at a desired RPM and/or boost level. You can cut fuel, spark or both. If your EMS is capable of it you can retard the timing. I was able to make 19lbs - 21lbs at 4,500RPM with the timing at -10 degrees I think it was. with a car I tuned. Video is below.

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Modified by 0x64 at 5:54 PM 5/24/2006

 

theres no 2-step in the vid??? ^^^ its just his car idling

 

What kind of wastegate spring were you using on that setup?
I heard the amount of boost you build depends on the wastegate spring is this correct?
Because when I set my 2step in S300 at 5000rpm I make only about 7 psi boost with a 7.25 psi wastegate spring.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboCoop &raquo;</TD></TR><TR><TD CLASS="quote">theres no 2-step in the vid??? ^^^ its just his car idling</TD></TR></TABLE>

Try now

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Importracer_001 &raquo;</TD></TR><TR><TD CLASS="quote">What kind of wastegate spring were you using on that setup?
I heard the amount of boost you build depends on the wastegate spring is this correct?
Because when I set my 2step in S300 at 5000rpm I make only about 7 psi boost with a 7.25 psi wastegate spring.</TD></TR></TABLE>

That's true but with their engine management I could control how much boost it built with the boost control

 

So If I have a MBC set at lets say 14 psi I should be able to build more boost than what I am building now with the S300?