So I have been searching for a couple hours here and cant seem to find any solid info or faq on the use of Hptuners and tuning for the SS/NA. And the info on the sight is dull at best so any information, or tips, that are posted will be very useful...being as iam getting Hptuners in a week or so it would be nice to put together a little library of tips and tricks

any info is useful such as...
- 2.0SS/SC Injector swap tuning
- Tuning for basic bolt-ons
-Adjusting timing
-fuel maps
-.........ETC.......

 

Yeah best of luck with it. I gave up after throwing cel's for over a month and God only knows how many re-dos. Illmatic is having nothing but problems and so is everyone else with the 2.4 from what I can see.

Not trying to sound dickish but the 2.4 is a HUGE PITA to try to tune. Best of luck and I hope you crack it so we all can benifit from it.

 

Hmmmm what are some of the common problems ......I thinking if we can get all the info in one spot it will be much easier to come up with a solution ...

 

HPTuners is a great tool for the LE5, however the E67 ECM is one of the most complicated GM ever came out with. On top of that, the latest .18 version has issues logging with the scanner portion that they've been working on.

The problem I've seen is that people don't understand how to set it up for the 2.4 to properly see what's happening, then start guessing on what to change based on whatever. I've seen a couple of "tunes" that really make me wonder. If you can't see and understand just what's happening, how can you fix it?

For example: The Injector Fiasco
The factory tune will go pig rich into the 10's on the upper end with the IDC near 90. Find out why and put the AFR under PE where it should be and everything's fine. I'm turning over 7,000 RPMs with intake mods, header and exhaust and my IDC's never go over the high 70's at 12.8 AFR. If the engine isn't asking for more fuel, a bigger injector ain't gonna give any HP gain. It'd take some serious mods beyond simple bolt ons to require a larger injector. I've seen a tune where the larger injectors were scaled wrong and that will definitely throw a code (lean in this case).

This stuff (HPTuners and the newer ECMs) is very complicated. If you don't take the time to do a lot of reading and learning you'll never get it right and may blow it up!

Best to find a tuner near you that is familiar with the LE5 (not many from what I've seen) and let them get it right.

Jack, you might try Matt at Tune Time or maybe ProMotion Tuning in Fredericksburg, VA. The only two that I can recommend near you. There may be others.

Cloudio, don't know about your area, but if you've got HPT coming, you might ask on their forum for help.

Biggest problem I see is that once someone figures it out, they're not willing to share it.

 

I've been working with illmatic.. and let me say. Not really liking tuning that PCM. The car is def running better, but still having problems logging it and the random CEL which hasnt been on for 2 days now at least. I just have more experience on the ss/sc's and will probably just stick to that for the time being

 

Yeh, 06black, the LE5 is a completely different animal than the SS/SC!

For the logging problem, with no traditional VE tables, the E67 needs different PIDs and the histograms have to be set up differently (MAF Hz instead of VE). If you've got the new .18 version, it won't log **** right. If you have an earlier copy, try that until they can fix the problem.

 

i never had a problem

ryan.

 

Doc was gonna give my 2.4SS a shot, but his millitary provoked move to Sacremento put that on the backburner for a while. I don't want a heavy tune.......i'd just like to dial in my mods a bit better, adjust the a/f ratio, get rid of the CEL's, maybe raise the redline a tad, and of course tune it to accept the SS/SC injectors I have sitting idley by on my bedroom floor.

I'm right up the street from Pro Motion Tuning. They recently just tuned my roomates '06 STI. They did an "open ECU" tune, meaning they altered the ECU directly w/o the help of a special piggyback unit and/or software, which is actually better in the long run, b/c un-like a piggyback unit which the stock ECU can sometimes overpower, it will never be re-written/over-written by the pesky factory ECU. All he got installed was an aftermarket downpipe, cat-back, CAI and BOV, and w/ tuning, it pushed right about 300whp, which isn't too shabby for such minor bolt ons.

However, while they are experts in tuning, I highly doubt they have much......if any......knoledge of the new 2.4 ECOTEC platform......let alone tuning it. They even said so themselves that I have the only modded 2.4SS they've ever seen to date in person. I'd love to get dyno tuning, but im still on the fence as to whether or not i'd trust my car in their hands. Tuning expertice............yes..........but HP Tuners + 2.4SS.........doubt it. So for now, my SS/SC injectors will collect dust, my CEL will remain a glow........and I will wait........

 

I hope just doing the basic stuff like raiseing the rev limiter and adjusting spark are not to hard, Myself and another 2.4 are going to start tuning here in the next week or so.

 

yo so far the tune we have setup on my car had some issues at first..but now the computer is learning it and adapting really well. yes paul and i have to go in a tweak some things..and i def wanna get a better log in there..i mean it didnt pick up knock or idc% which we wanna figure out. other than that..running good. once it said and done..pm paul or me we can def hook u guys up if ur interested.

guys this tune is making total difference with the injectors. gm maxes out the stockers and this helps alot and yes i have much better mpg i avg 2miles more a gallon, which isn't bad for mods. any question cloudio?

 

I've talked to tune time already and it'll cost me $300. I'm waiting for the Hahn turbo kit before I screw with it again, I'll probly drive to Hahn and let them do the whole thing cause I'm sick of playing with it.

 

i dunno terry...this tune is lookin good so far. u mite have to go with this tune i have setup...i mean it still has to be tweaked..but i dunno turbo is so much money and so much work..and there goes that factory warranty. at least i can put everything back to stock easily. if custom turbo setup, that wud b a pain..i dunno man..this tune mite help..lol

 

Ok well first and foremost for the 2.4l guys out there who have the 2.0ss/sc injectors does its really make a difference?? being as I just have full boltons and have no plans of going FI should i even consider getting ahold of a harness and injectors or will the stockers suffice my goal is to tune to take full advantage of my boltons and possibly raise the rev limiter ....I wasnt aware we could raise it to 7,000rpm's is this the most it can safely handle ????

geez so far this sounds like a big mess Iam starting to think maybe skipping the tune aint such a bad idea lmao


was it tough tuning it to take advantage of your boltons and are the 2.0 injectors really necessary to take full advantage of I/H/DP/E ???
this sounds great i just cant afford to take a risk that may put me in a heap of trouble right now...any remarks??

 

I HAD the 2.0 injectors in it and yes they + the tune are worth around 15 hp according to the few who have dynoed it.

Ill, I know my warrenty will go bye bye but it'll be too much fun! As for the cost, lets just say my next paycheck will be in the $2000.00 range.

 

Hmmm so its apparent its a pain in the ass Iam enthusiastic becuase ive heard the 2.4 responds great to a good tune however there seems like theres always some kind of problem sooner or later ......and if we could figure out the VVT "tweaks"iam sure that would to be good for some ponies I hear its ridiculously complicated however....

did you lose them cause of tuning problems???

 

They are sittng in my garage along with the harness, all nice and neat in a box.

 

hptuner's site blows *****. it seems like all they try to do on the site is sell you the pricy software, when most people just want a single tune. its pretty much useless for the average guy wanting a single tune....

i'm wanting to tune, but i cant find anyone that has the software in the stl area.

good luck

 

Same here but apparently if you know what your doing there are benfits to owning the software

 

i mean yes i got a cel but my computer learned the fuel tables we setup for it. i havent seen it for 4 days now..i think thats a good sign. are u auto or manual? mine is auto and i can tell u its shifts really hard and firm on WOT. driving normally its good too. i getter better gas mileage and this helps the car out really well. the VVT can not be accessed yet by hptuners,..yet. i mean do u have someone with hptuners around by u..cuz 06blackg85ss and me cud def hook u up.

 

What did you end up logging for STFTs and LTFTs (after a while)? What about KR and where?

 

well for some reason on my laptop it didnt read all. it didnt read kr for some reason and the ltft was around 6.3 at the end of the log and the stft was 1.6.

 

iLLmaTic3s, That 6.3 LTFT is spot on for the calculation error I've seen for the larger injectors. You just confirmed what I've already seen.

If you didn't get KR logged, was it even being logged??

 

Ya I have an auto aswell....LOL theres not even somone in my area that drives a cobalt ss...let alone has hp tuners lmao

man if i was up in NY with you guys I would def. jump all over that offer

 

that was at the end of the log...then wut shud it be then? something with my laptop was not able to log kr and idc for some odd reason...

 

the only thing about hahn is i have heard that they lock their tunes so if you do any other type of modification you would have to have them reflash it, and i seriously doubt they are going to let you in on any details, i really want to become more educated on tun but it looks like that is where everyone is at, wanting to learn. im going to keep an eye on this thread, it has already been quite useful, i cant wait for someone to make a major breakthrough and let us all in on the info.