...should I change the Rev limiter, shift firmness, and shift points on my car?

car is in sig.

Thanks.

 

There's no need to change the rev limiter or shift points unless you install a big cam.

 

Definitely do not raise your rev limiter on a stock valve train.

 

What about shift firmness?
There are 4 levels of increased firmness: 25%, 50%, 75% and 100%.

 

i also have a hppIII but I have all the exhaust
from header's y pipe high flow cat's cut out's
and also will like to know if I can do the same <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />

 

Your stock rev is set at 6200, I personally feel you can raise it to 6300 with no issues. I set my shift for 1-2@+3, 2-3@+6 and 4-3@+9, with shift firmness at 75%. You will quickly notice that the tranny is much better at those settings and you in town driving is much more fun. I also am one of the few LS1 owners that has the power mode installed and I don't ping and I really have noticed an increase in power. You can play from there but I would not adjust the rev any higher than what I stated unless you put in some firmer valve springs. For what I paid the HPP III has been worth the gains. I also run a 160 stat and have the fans set accordingly. My motor runs nice and cool, even in traffic and I really like the responsivness I have gained. I hope this helps you guys. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

 

I got about .1 to .15 improvement in ET & little over 1 mph more with the 1-2 & 2-3 both set at +2. I have a 2002 2.73 w/lid & cutout. I got another .1 improvement w/power tune & near 1 mph gain.

From what I've noticed, certain years, like 99s especially do not take well to the power tuning. I don't know if that is true, just something I've noticed.

I set my shift firmness to 100%. I would set it to 200% if it would let me <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> It seems the 2002 has some aggressive torque management programming which kind of dampens hard shifts. So 100% may not be a preferable setting for yours.

Hope this helps.