2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

Finally Touched by HP Tuners!

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Old 12-25-2006 | 10:27 PM
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Finally Touched by HP Tuners!

I just got ahold of my friend's laptop with HP Tuners. Within a frew days of sitting down and reading I decided to start making changes.
1. Remove Speed Limiter
2. Have Fans Come On Earlier For Cooling
3. No Delay For Power Enrich Mode
4. WOT Is 88% Throttle, Instead Of 92%
5. Power Enrich Adds More Fuel Than Stock
6. Stoich AFR Is 13.7 Instead Of Stock 14.7
7. Piston Protection Enables At 3300 RPMs Instead Of 3800 RPMs
8. Idle Begins With 1200 RPMs And Steadily Lowers To 950 RPMs Once 170 Degrees Is Reached
EDIT - 9. Changed rev limit to 7000 and so far so good. I wont go higher until I have better springs and cams (then itll be set for 8000)

I feel the car respond quicker and better with more torque overall than I had before. Not tons but enough to feel a nice difference.

To clarify I have the 2.4L with an Ingalls ETD, DC Sports Front Strut Bar, Pep Boys Special SRI, and TWM Short Throw

Once more fuel tuning is done, I will be getting a dyno to justify my changes. I am also going to back the timing up because we are advanced LIKE HELL stock (around 40-45 degrees while in WOT running 93 octane and a SRI), and I want to see if I can drop VVT engagement to 3000 RPMs instead of 4000+ish.

Yes, I have kept good fuel milage because the changes only affect WOT conditions (I burn more fuel when accelerating hard) but when I am just cruising, it's fine. I drove all day today on a full tank and came home with maybe a 1/24 of a tank gone. Then I went out just now and did runs on WOT and came back with 1/16 of a tank gone, which indicates Im using more fuel, but too much (I drive ALOT!).

Last edited by panblackrose; 12-26-2006 at 12:08 PM.
Old 12-25-2006 | 10:29 PM
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why did u put piston protection earlier.
Old 12-25-2006 | 10:31 PM
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you guys run 40 degrees of timing!!!!!!!!!!!!1
Old 12-25-2006 | 10:43 PM
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I put piston protection earlier because I was reading the description (cant remember it now, dont have my laptop with me) and it seemed a good idea. But yes, we run around 40-45 degrees advanced timing during WOT. Its f**king crazy... Plus we run lean as hell stock. The car loves a little fuel!
Old 12-25-2006 | 11:39 PM
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God I want to mess with mine so bad. It's like modding a map in Halo 2.
Old 12-25-2006 | 11:48 PM
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from 92% WOT to 88%. What is this doing. I wont even tell you what I think cause I would think my concept of what is going on means you should be going greater then 92%, but I have never used it and assume my interpretation of this data is wrong. So could you just educate me on this piece of tuning? What is going on here?

thanks
Old 12-26-2006 | 09:55 AM
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Originally Posted by SSBOOST
God I want to mess with mine so bad. It's like modding a map in Halo 2.
nothing like playing warlock and having people ride around on ghosts
Old 12-26-2006 | 10:00 AM
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Originally Posted by panblackrose
I put piston protection earlier because I was reading the description (cant remember it now, dont have my laptop with me) and it seemed a good idea. But yes, we run around 40-45 degrees advanced timing during WOT. Its f**king crazy... Plus we run lean as hell stock. The car loves a little fuel!

Here ya go

"Piston Protection:

Enable RPM: RPM must be above this to enable Piston Protection (fuel enrichment) mode. Set to maximum to disable."

Hey Landon you wanna try that with mine next ?
Old 12-26-2006 | 10:23 AM
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Is there a way to have VVT all the time or is that bad?
Old 12-26-2006 | 10:23 AM
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Originally Posted by SSBOOST
Is there a way to have VVT all the time or is that bad?
Leave VVT engagement at 3,500RPM. Anything sooner and the car cannot create the desired power.
Old 12-26-2006 | 11:28 AM
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I wasn't aware we could adjust anything regarding VVT?
Old 12-26-2006 | 11:35 AM
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Originally Posted by GTP
I wasn't aware we could adjust anything regarding VVT?
VVT can be changed for quicker engagements(as far as I know) like the Honda Civic w/vtec can be changed as well. Without the proper supporting mods VVT engagement coming sooner then stock won't provide any gains IMO.

I could be wrong though. I have just received my copy of pro edition of HP Tuners so I can wait to start programming my car. I've been reading pretty heavily on the program.
Old 12-26-2006 | 11:44 AM
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Originally Posted by ssnipes
from 92% WOT to 88%. What is this doing. I wont even tell you what I think cause I would think my concept of what is going on means you should be going greater then 92%, but I have never used it and assume my interpretation of this data is wrong. So could you just educate me on this piece of tuning? What is going on here?

thanks
It means the car goes to its WOT programming when the throttle is at 88% or more. Lowering this number effectively makes the car think it is at WOT sooner. It is useful in automatic transmission car because it will make the car use the WOT shift profile, harder shifts, holding gears.
Old 12-26-2006 | 11:59 AM
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Ssnipes, setting WOT earlier makes the pedal more responsive and seems to get better engagement and smoother power flow.

Sneaky, if you would like I can send you my mod file and let you use it to see if you notice a difference too, just to make sure I'm not crazy. You'll notice a little more fuel consumed under WOT but there is more torque, how much I don't know. I've had it one for a few days and so far, no problems, the car seems to enjoy not being so restricted. Just pm me.

As for the VVT, I wouldn't set it below stock (around 4000) until I had better cams (trying for JBP triflow)

Remember people, I'm trying to do this without support. There is no information on HPTuners on how to tune the 2.4L with VVT, no one is trying it, or at least hasn't posted. I'm going out on a limb and hoping I don't f**k up, although I am taking it slow and easy as long as I know what is going on with my changes. I just got an AFR (autometer cobalt) gauge and a pyrometer so I can see exactly what else is going on.

By the way, has anyone noticed we have a weak electrical system? Would we benefit from a grounding kit? I hear people speak of gaining horsepower just by doing that...
Old 12-26-2006 | 12:03 PM
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Originally Posted by sneaky
VVT can be changed for quicker engagements(as far as I know) like the Honda Civic w/vtec can be changed as well. Without the proper supporting mods VVT engagement coming sooner then stock won't provide any gains IMO.

I could be wrong though. I have just received my copy of pro edition of HP Tuners so I can wait to start programming my car. I've been reading pretty heavily on the program.
I think you're gonna find that the VVT tables are inaccessible.
Old 12-26-2006 | 12:06 PM
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Not entirely, its all in the fuel tables. I think I might be able to reach it. I'll try once I sit down with my laptop.

Off to Richmond for the day!!! Will, yes I will tune your car just gimme a call later on 650-2839 I'll just charge you what it costs to use them credits you "gave" me just playin man
Old 12-26-2006 | 12:07 PM
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Whoops! I forgot to add that I changed the limiter to 7000 instead! Ill edit it now.
Old 12-26-2006 | 01:59 PM
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Can you change the Speed Limiter to anything you want? Let's say 70mph if you don't want your friend to **** with your car.
Old 12-26-2006 | 02:46 PM
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Won't work for me. I am supercharged
Old 12-26-2006 | 03:47 PM
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did you take off tq management?
Old 12-26-2006 | 10:42 PM
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Originally Posted by SSBOOST
Can you change the Speed Limiter to anything you want? Let's say 70mph if you don't want your friend to **** with your car.

Yes. its also helpful for when you let your girlfriend drive it.

when my business is said and open (here in march of 07), im gonna tune the company vehicles to no more than 70mph.
Old 12-27-2006 | 02:49 AM
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So VVT is like VTEC? Does it sound like VTEC?
Old 12-27-2006 | 03:00 AM
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Changing stoich AFR is a bad idea, no idea what you think you would gain from that, other than more visits to the gas pump and a burned out cat. Changing PE and piston protection (which is just another uneditable enrichment method) is a bad idea without logging on a wideband to see what actually is happening.
Old 12-27-2006 | 03:50 PM
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I'll look into that Witt, I plan on making a trip to Dynotuned Performance in Hampton within the next couple of days. I'm still just playing around seeing whats up with the system. If I kill my cat, good, a reason to buy a highflow system.

As for speed limiter, I upped it from 120 stock to 150 for the hell of it, but yes you could tune it for 70 if you want to keep people from messing around. If I remember correctly, you can set the rev limit for each individual gear

Yes, VVT IS VTEC, but I don't know why everyone thinks vtec sounds like ****, its just the hondas that carry it. I had a 94 D16Z6 SOH VTEC 1.6L that sounded like a monster, especially when vtec kicked in. No nasty vibrations, no ugly sound. Once I hit 4000 in the cobalt, it just pulls harder and sounds a little deeper.
Old 12-27-2006 | 03:58 PM
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I like the whole idea of changing revlimits and changing top speeds. Whenever I bring my car in and see a pimply little face mother ******, I know he beats on it.


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