To not bog you need to have the cutoff set with respect to your gearing, with a few hundred RPM error.
ie) LSJ, F35 tranny, 7000RPM redline - set to ~5100RPM +/- ~100RPM

Too low, and the engine can't lower the RPM fast enough, hence your engine 'dying'.

 

No its not. You can vary the rev limiter by ECT.

Change what I have painted the arrow to and it will change your resume point.



Edit: After trying my hardest on my way home from work to duplicate the problem of hitting the P/N rev limiter while moving I think its safe to say this problem is tuner error.

You guys having this problem are either setting the hysteresis way too wide, using an in gear modifier less than 2 for some reason, or are running your p/n limiter at less than half of your in gear limiter. Any of these errors will cause you to bounce off the p/n limiter.

When correctly tuned, this mod works just fine.

Your p/n limiter can go as low as half of your in gear limiter and you'll never touch the p/n while the car is in motion.

 

as always, Al to the rescue lol. Whenever I decide to pull the cobalt out of the garag one of these days I'm going to try this

 

Are you juicing your stang?

Yep, I had it set to less than half the In Gear RPM. Because I don't launch at 4500rpms. If you want to launch at 4500-5100 rpms then I'm sure it works fine. I don't think most people would enjoy that, and using it as a 2-step for most people is out of the question in ill advised. If you have the capability of launching it safely from those RPMs then you are a step ahead of most people.

 

hmmm I wonder what a 4500 rpm launch would do t my car lol. I'm actually really anxious to try this out now.

 

the whole "fuel cutoff" thing scares me. espeically at 10psi out of the hole.

reminds me of the rev limit on the 96-98 4v mustangs

 

yeah I know that's the one major thing I don't like about our rev limiter.
I've seen in other pcm's it lets you change it to spark or ETC

 

id rather have spark. less chance of **** going blamo!

IE trix.


yep i went there

 

lol, well yeah, I'm pretty sure that helped the motor go boom.
I try and never hit my limiter..... it almost makes scary explosion sounds and large ***** of fire come out of my car occasionally

 

Just don't forget to change your in gear modifier to whatever your redline is divided by your p/n limiter.

Dan said the HHR SS launches at 5200rpm on the stock two step.

You stock engine people are funny.

 

yeah but they have a heavier clutch and axle hub assembly than we do.
and lol, stock motor, but the bitch is putting up one hell of a fight

 

you can still pop forged pistons batman


im not sure why someone wants a 2 step on roots blower anyways. you can go from 0-15 in the blink of an eye.
::shrugs::

ya ya i got 2 step, car go pop pop pop pop vvvvrrrrrrrroooooooommmmmmmmm

i got nuthin

 

lol, well I know us few turbo guys do need it.... my car doesn't build boost for **** in 1st gear

 

big turbo cars yes. lil blower cars. no

 

i build 5 psi easy in neutral without a 2 step..tvs ftw

 

Watch your EGT gauge Robin.

I don't use one but there are a couple turbo cars around here that do, one with a fairly large sized one at that.

 

i has egt

unlike the rest of the masses.........

.....

 

Bet it doesn't move while against the limiter.

 

i have enough track issues as it is right now. a two step is not something i need to further boil the tires more.

 

Its called launch control for a reason...it helps u launch

 

so do my feet

 

 

Obviously not if your having issues

 

eh I can't wait to be able to launch my car, need to get the damn clutch in one of these days

 

dunno, i don't run at the track as it is. thats what the 240 is for