I have a pretty simple question. What does the "soft limiter" 250 rpms before your set limiter actually do?

This UTEC is hardwired into a 2003 Maxima if you guys are wondering.

I have my limiter set to 7200 right now, but considering the soft limiter, I am guessing that realistically means I can only make power to 6950. I'm a little hesitant to raise it any higher so I can rev a little further out before shifting as I currently have stock rod bolts and cams/valvesprings in place.

So what do you UTEC tuners do about the soft limiter? Do you set the hard limiter 250 rpms above where you'd normally shift (considering powerband)?

Currently I'm tossing around the idea of getting a WOT box. I would use it for a 2-step first and foremost which would help with consistency launching on slicks, but also for a rev limiter. That way I could set the UTEC hard limiter at say 7400, where the soft limiter would kick in at 7150, then set the ignition cut rev limiter from the wot box at 7200. That way I could actually make power out to my redline without over revving. Is this completely the wrong way to go about it?

Thanks for input!

 

The thing is with the vq it doesnt really make any power above the stock rev limiter so your not gaining anything. Not sure about the early versions of the motor though. Look at some dyno sheets and you'll see it drops off abruptly at that point

 

Thanks for the info, although this is not new to me nor on the topic of this thread. I'm not looking for info on how high to rev, just info about the UTEC's soft limiter and how tuners deal with it. Regardless if power isn't made that high on stock cams, my question still stands (and the stock cams won't be an issue much longer, anyway).

 

This thread is old, but the question still stands. Will be asking the guys at CIN this at some point, but would also like forum input if anybody knows.

 

Ended up just using the N2MB WOT box to set an ignition limiter at 7100, and setting the UTEC limiter to 7400 to avoid the soft limiter, even if I don't know specifically what the soft limiter does. Works great for now.