Hey guys...looking to get a bit of a performance tune into the cobalt...i have HPtuners, but not the pro edition...just looking to see if someone had any extra time to come up with a tune for me...Rob, Mase...if either of you two could help me out i would appreciate it a whole lot... mods are as listed in my sig.
Thanks.

Also if it helps my AFRs sometimes dip into the high 10s...like 10.9, 10.8 at WOT and i know thats way to rich...plus the fact that its about 25 degrees here everday doesn't help that...

 

Moved to Tuning

 

looks like u need either a more all around tune or a winter tune depending on temps during summer

 

for just basics start by setting your PE fueling.... adjust enrichment rate, rpm limit in PE ramp in can come down a bit too. Then work on timing, start ramping timing up and then log to see knock levels and back off areas where there's knock. Then you can start working on the VE tables, check out the forums on HPtuners.com for how to do that. This is a good starting point with HP since these are fairly basic changes and you will get used to making changes and logging to see what's going on if you're not comfortable using the software yet. I wouldn't recommend using what someone else has for many reasons but mainly, how can you trust someone sending you something over email especially if you have no way of verifying they know what they are doing. Again i'm assuming you're new to HP tuners. Also, you'll never learn how this stuff truly works if you don't get in there and do it yourself.

I'd also recommend starting with the stage 2 VE tables as well... they are a little bit more accurate than the stock ones.

 

yea but what about the PE fueling?...and i can't find the timing tables and maps...the MAF tables are there but i can't find the timing tables...also the program won't monitor knock for some reason? do i have to register the product to get it to do this or is there a problem with my software? i mean i figured out how to get into the PE tables and change settings but i don't know how to calculate the tables yet so...im kinda stuck unless i go to a performance shop and get it dyno tuned...but thats gonna cost me $100 an hour around here...but yea i'd probably get it dynoed afterwards anyway but if you could give me some advice or screen shots or something like that then that would help a lot..

 

timing is under: Engine - Spark control. there are 2 main tables, high and low octane. the rest are modifiers based on engine run conditions. as a n00b tuner, i dont recommend messing with your timing yet. with your mods you really have no need to anyways.

PE (Power Enrichment) determines your desired a/f ratio while above a certain PSI and/or RPM, usually used when you are on the throttle hard and require more fuel than the stoichiometric 14.7:1. the values for PE are based on the equation 14.7 divided by desired afr.( ie: if you want an afr of 11.4:1, you would take 14.7/11.4=1.289)
a good place to start for some basics is DOC's FAQ posted here

 

alright thanks...well in the next few weeks i have a 2.7 pulley, and injectors coming and i wanted to get a basic gist of how to tune it first so thanks...and i know about cooling mods so don't even begin to flame or anything like that...but what about the cylinder air mass by rpm tables...and i can't get the knock sensors to show up and actually read knock. but thank you for the advice

 

forgot to add how to get KR readings.
for Knock Retard, you need to load the PID into your log table in the scanner. right click on an empty cell, insert, PID list > Engine > Retard > Total Knock Retard (*)
then put it in your chart display by doing the same.

 

alright cool...thank you very much
and it automatically put it the chart display...thank you again