AARON-SS-TC

iTrader: (3)

So, i was wanting to get people to gather their info and post what kind of tune they have. Nobody says how their car is tuned, they just say "hey, i got 24psi tune" and thats it.
Give details of how your car is tuned or has been tuned and the pros and cons of it.

Ill start:
2008 ss/tc tuned at 24psi max that tapers to 22psi around 5800rpms till my stock 6200rpm redline. 14* of timing is all it would take without having knock. I have 55% boost in 1st gear.
It was very smooth and stock feeling as fas as power delivery, but much faster.
I def. want a more aggresive feel and tune after i get my intercooler and forge bpv installed.Looking to maybe raise my timing for more midrange power, plus i think i wanna have 75-100% boost in 1st-2nd gear and set my redline to 6500-7k in 1st, then keep the stock 6200 for all other gears...

I also have a stage 3 KY clutch ready to be installed as well, because my clutch took a dump just 200 miles after i got the tune

BlackARCA06

iTrader: (5)

Sub'D

brycerice13

2009 ss t/c boost spikes to 23psi then holds at 21 till redline at 6700, 14* advance at top end. Boost is almost instant, fuel enrich is .77 at top end. Just calibrated my maf sensor and it smoothed out everything as far as acceleration. Want to try a E47 tune eventually when i get some time.

CmplXty

I will as soon as I can figure out what in gods name is making my fuel trims go straight to hell after 2-3 days of running a tune. Too nervous to add boost ;/

jthomas9

subd

SSlobalt

2008 Cobalt SS

Tuner: IAmBroke (Tom)
Software: HPT
Fuel: E47
Tune: Peak of 21.6 psi at 5K RPM, tapering to 17.6 psi at 6300RPM, with a max of 21.6 degrees of advance. Slow boost ramp and lower boost levels due to slipping OEM clutch.

09CobaltSS1

No offense man, but I hope for your sake that you are wrong about your PE settings. A .77 lambda is going to put you at around 11.3a/f which is just silly rich for a LNF. I also sort of doubt that you're holding 21psi to 67000rpms. I don't know, maybe I'm missing something and you're running something larger than the stock turbo. Either way, that's still rich. Who tuned you just out of curiosity?


**Edit: I just pulled up a log you posted on the hpt forum and wow you definitely weren't lying. You're running a .75 enrichment wot, but you're only holding 15.5psi.... not 21.... Lean that bad boy out a bit man, dial back some timing in the 120-220% load columns 3000-5000rpm range starting at maybe 18* and smooth it out to about 14-15* peak in the upper rpm/upper load areas. I'm not sure if you saw, but you're getting a few degrees of kr at tip in because you're set at 21-25* in those ranges and it needs some smoothing. You definitely need to dial in your maf a bit better as well.... **


As for my own tune; 24psi max boost holding about 19psi to 6500rpm, no torque limits in any gear, 6700 rev limit, 22° timing wot on an e47 ethanol blend tuned by me.

Gremlin85

iTrader: (8)

24psi tune, slow ramp below 3500rpm, holds to about 20psi at 6500rpm where I've set my redline. 1st gear limited to about 65% tq until 4500rpm and ramps to 100% at 5500rpm. I'm running 93 Octane from the same Mobil station and pump every time and I've been able to squeeze 16.5* of timing up top. Meth injection is almost completed and I'll retune for that. Tuned by me with stuff I've learned from every other tuner on here.

I change my tune more times than I can count. Little things like tq reduction in 1st, timing and boost ramp rate. Always experimenting

:EDIT: I run a .82 Lambda at WOT

I experiment with that as well (anything from .80-.88 Lambda) to see how it effect exhaust temps, timing and 0-60 times and 60-100.

Chevycobaltss3

iTrader: (2)

Having a set or of .77 is fine, it is rich. The lnf loves the leaner Afr, but the obtain also are easy to blow ringlands. The richer mixture helps by adding a cooler combustion and relieves a little stress by cooling.


My cars no point to talk about.... Lol

09CobaltSS1

Gotta love the slow ramp.. I've got mine ramped in to reach full boost but about 3500rpm as well, but no torque management. It's just a preferance of mine. I just like being able to fully control everything manually with my feet and hands in any gear.. Or maybe I'm just a glutton for punishment and I just like to work too damn much....

Yeah? .74-.75, or even .77 just strikes me as very rich for DI especially on the stock turbo, but **** I'm definitely still learning so maybe I just learned something new.... lol... I mean there's no chance of washing down the cylinder walls with that much fueling?

Gremlin85

iTrader: (8)

I'm slowly pushing myself to remove my tq limitations just so I don't have a computer messing with me when I want to go crazy lol.

I should also have added that I run a .82 Lambda at WOT.

09CobaltSS1

yeah exactly! I hate when you're just in the mood to do something stupid for no good reason other than.... well.... because you can! but you can't when the nanny wants to tell you no no my child! No wheel spin for you!

I actually agree with you on the .82lambda. That is what I was running for quite a while on my gas tune with great results. I know everyone preaches .87-.88 but I just fealt more comfortable with .82 and my power numbers were always solid so I kept it. Now on my e47 tune I've been running .85-.86lambda wot with good results.

Gremlin85

iTrader: (8)

Truth!

I learned a lot from my mistkes lol. .82 lambda on pump gas is what I do now and it's been great. e47 can go a little leaner (.88) but I guess safer is better no matter what.

robk

iTrader: (3)

My tune is as follows: 3rd and 4th boost spikes 26, holds steady 23-24. Timing taper 24* midrange at 2520rpms to 26* @3000 and holds to redline...AFR is 12.3 rich for safety purposes. This is an HP on E47, fully bolted, with wiesco's

robk

padlock

iTrader: (9)

subb a dubb dubbd

AARON-SS-TC

iTrader: (3)

wow, looks like i started an awesome thread...lol...great info on here so far.

09 cobaltss1 and gremlin85, you guys said there is no torque management in your tunes now, so does that mean your boost comes in earlier without restrictions?
i want mine like that, and i want 100% boost in every gear with a raised redline in first gear...
I thought that would help balance out the power through the rest of the gears by doing that as well.

2010SS

iTrader: (3)

1 you dont want 100 percent boost in first unless you want to be under the car more than in it, and 2 you would be better served keeping first at 6200 and movng the others to 7000 or 6700 to be a but safer...

As for me
My tune depends on the day .right now I'm working with James and we've got 26* up top with around 25-26 psi on e47... In working in my own time on what boost reduction works best for 1st gear... 6800 redline

Chevycobaltss3

iTrader: (2)

Afr is variant with each car on ethanol based tunes. Safeness wise .87-.90 is safe, but only e and it also depends on boost... I have a few cars on e running .82 but this depends on the owners wants and the car. This will allow more tq in midrange but lower whp up top if it is like so .

AARON-SS-TC

iTrader: (3)

Quote:

Originally Posted by 2010SS

1 you dont want 100 percent boost in first unless you want to be under the car more than in it, and 2 you would be better served keeping first at 6200 and movng the others to 7000 or 6700 to be a but safer...

really? very interseting. Maybe you or someone else could explain better so i can get a better way of how i can get my car safe, but more aggressive.

09CobaltSS1

Basically yes. Granted at times it can be a handfull to keep the tires planted, but manually having full control of the boost via the throttle just fits my driving style better. You definitely need to know how to pedal the gas and get used to where the boost starts to hit hard to know how to control wheel spin. Plus it just adds a fun factor when you want it..

I personally sorta disagree with this, but I can understand where you could think that can be an issue. It really depends on the person's driving style and flat out what they like.

Unless you're not comfortable with pedaling the gas a bit through 1st and 2nd (which you still have to do to an extent even with torque management active anyways unless you bog the snot out of the car with torque management) or plan on being a dummy by bouncing the limiter the entire time, then there will be zero issues with removing all torque management at all. The boost CAN come on quicker, but again, as long as you know how to drive and control the throttle there is no issue at all. I personally like to drive my car, not let the car drive me.... again that's just my preferance..

brycerice13

I had my car tuned from Church Automotive Testing (Shawn Church)
I just got Hp tuners about a week ago and have already started doing some tweaks to that tune as I can see a few things need to be fixed. I did a MAF calibration and it fixed the kr issues, but when i get some time in going to start playing with a little more timing advance and lean out the enrich table. I want to try a e47 tune also but like i said I need some time to play with it and im kinda busy lately.

casionerd

iTrader: (3)

Trifecta. 23psi peak at WOT. Don't know what it does at 6500 rpm because I shift before then. At WOT AFRs are at exactly 12.0 and stay there according to my Interceptor. I think 1st gear is 15psi. If I knew how to use my Interceptor I could give more stats but all I look at is boost and AFRs.

Only engine mods are K&N SRI, ZZP catless DP and ZZP hotside CP.

Sloco Productions

iTrader: (2)

http://www.flickr.com/photos/79715393@N06/7133959121/http://www.flickr.com/photos/79715393@N06/7133959121/ by http://www.flickr.com/people/79715393@N06/, on Flickr

http://www.flickr.com/photos/79715393@N06/6987878668/http://www.flickr.com/photos/79715393@N06/6987878668/ by http://www.flickr.com/people/79715393@N06/, on Flickr

E85 tune by Trifecta....i would actually like to go in and see the details....need to get a cable (guy i bought it from kept the cable)....i peak at 22 but hold around 19-20

this was a dyno day in minneapolis they didnt hook up A/F so i couldnt tell if its rich

AARON-SS-TC

iTrader: (3)

this is how i feel. i am 32 years old and wanna be able to drive the car how i want, not let the car drive me...obviously traction will be an issue if i lay into the pedal in 1st and 2nd gear, but if i wanna do that, then i wanna have the option...lol

what about changing the redline to higher rpms? what gears would be best to do so to?

Chevycobaltss3

iTrader: (2)

Tune varys on the owner of car. If you have 100% in each gear mainly 1,2nd toil just spin and itll be.more difficult to drive as a daily..