[shakenfake]

04 GTO ?

Good luck finding that one PCM on that one car. That is the only one that can do it. Literally. The 04 GTOs had Holden OS.

And yes I know HPTuners just destroys emissions laws. I have no idea why they won't let any PCMs run lean cruise. It is something in the logic. You have to have the .cax file.
It is diesel emissions tier hard.

 

[PD939C1]

"VVT with performance cam + springs great idea until the cam eats the second cam bearing."



Any of the VVT performance cams I've seen offer minimal gains over stock. Not close to justifying the cost of cam and springs. Even the BTR "No Springs Required" cams have very little power to add under 5000 rpm.
Why so on the second cam bearing though?

 

[95wagon]

Sorry not following.

Compatible P59 ECUs are around in many vehicles and cheap.
Get one , full program to 04 GTO cal. Some I understand will need full load with Tech 2 first ,
Case in point one of my E67s I use in my wagon started life in a Cobalt 4 cyl and needed the full tech 2 first.
Am I missing something?

Lots of Holden cals on the HPtuners sight , were there any lean cruise 0411's ?
"

04 GTOs had Holden OS

Yeah, I get it but the fact remains it was a US sold car for US consumption.
I consider a 4th Gen Camaro an American car too.

 

[95wagon]

Why so on the second cam bearing though?

The giant groove in the middle of the journal to feed the VVT turns the bearing into 2 narrow bearings and offer reduced support to the oil wedge. Two little wedges do not offer the support that the wider bearing does.
I have an L76 and it is the worst of both worlds No VVT but the cam still has the big ass groove for no reason.

 

[PD939C1]

Did you end up swapping the stock cam and springs?

 

[95wagon]

No, the L76 in the Pontiac G8 is DOD but non VVT.
This unlike the truck L76.
Engine is mechanically stock , untouched

 

[shakenfake]

Sorry not following.

Compatible P59 ECUs are around in many vehicles and cheap.
Get one , full program to 04 GTO cal. Some I understand will need full load with Tech 2 first ,
Case in point one of my E67s I use in my wagon started life in a Cobalt 4 cyl and needed the full tech 2 first.
Am I missing something?

Lots of Holden cals on the HPtuners sight , were there any lean cruise 0411's ?
"

Yeah, I get it but the fact remains it was a US sold car for US consumption.
I consider a 4th Gen Camaro an American car too.

No you aren't understanding I guess.

The binary in that ONE PCM is different. The binary. Not the tune itself. So you need a .cax file to edit it. That is why even if you flash an 04 GTO tune onto another P59 it will not work because the binary in the logic is different.

 

[95wagon]

Is the .cax file EFI live speak or is that what it is widely known as ?
While I own EFI live I don't use it much.
I am guilty of having way more software-hardware than knowledge .
I am ASSuming a full write on a vigin ECU with a tech2 takes care of this file ?
Gm lists 19299227 as the uncalibrated service part number .
That number fits a number of vehicals.
So a full load with GM hardware-software would make it a 04 GTO ECU , correct?
Also tons of resellers seem to offer " rebuilt" ecu's for cheap for the 04 GTO.
I am going to reach out to the smarter than me guy I drag into ECU stuff I don't understand.

I admit this is a bench racing moot point to me personally.

 

[91ss]

Interesting. The tune for fords IS the complete binary. The 91 caprice prom is the complete binary. It's the definition files that let you edit the right parts of a binary. But maybe things have changed now??

 

[MadOTC314]

Never thought I'd order a crate engine and have it delivered 3 days later. Summit orders coming in quick.

 

[shakenfake]

Is the .cax file EFI live speak or is that what it is widely known as ?
While I own EFI live I don't use it much.
I am guilty of having way more software-hardware than knowledge .
I am ASSuming a full write on a vigin ECU with a tech2 takes care of this file ?
Gm lists 19299227 as the uncalibrated service part number .
That number fits a number of vehicals.
So a full load with GM hardware-software would make it a 04 GTO ECU , correct?
Also tons of resellers seem to offer " rebuilt" ecu's for cheap for the 04 GTO.
I am going to reach out to the smarter than me guy I drag into ECU stuff I don't understand.

I admit this is a bench racing moot point to me personally.

.cax is beyond EFI Live. It’s a binary file that shows in 1s and 0s. You could also complete the addition of Lean Cruise via WinOLS. That is how people can still crack diesels. Ugh it is so complicated I can’t even explain it 100% perfectly. Just know it is a hell of a chore.

A full write on a virgin PCM will still not work unless you have edited the binary to accept lean cruise.

Those resellers will sell PCMs that work great for the 04 GTO but they just won’t have lean cruise.

 

[95wagon]

Seems there is a lot of disagreement between the " it cant be done" people vs the " ah,, I've done it " people

Lean cruise - LS1TECH - Camaro and Firebird Forum Discussion

PCM Diagnostics & Tuning - Lean cruise - Sorry all- all the threads I can find are a number of years old. Curious if there has been a fix yet to get lean cruise to work on an LS1 vehicle? Specifically a 2002 LS1 Camaro. I know we have the tables, but all I have read is how they are hard coded...

ls1tech.com

TC OBD2 seems to be an easy key

 

[shakenfake]

It seems like you are still using a Hex Editor inside tuner cat. Just another way about it. Enjoy finding TunerCat and using it, I've heard it is relatively tricky and I have no idea where to even get a copy.

 

[95wagon]

I
Enjoy finding TunerCat and using it, I've heard it is relatively tricky and I have no idea where to even get a copy.

Thanks , I got it from Tuner Cat ,,,,,

 

[shakenfake]

My brain melted slightly seeing Windows XP

 

[SSandman]

I think the parts availability and the amount of information out there about LS engines really pointed me in that direction. I just felt like I could reach any power level I wanted with that platform, and any problems I ran into, I would be able to find the solution on the internet pretty quickly. I tried setting up that Megasquirt with a SBC a few years ago, and ran into all kinds of problems because of a few oddball things I was trying to do. This time I'm trying to make things as simple as possible.

Also lots of nice little improvements, like gasket sealing with the the use of O rings and intake manifolds that don't require RTV on the ends, evenly spaced exhaust ports giving you easy access to all the header bolts. Combine that with better head flow, stronger short blocks, more engine management options, factory coil per plug, flex fuel options and more aftermarket support for things like forced induction and it's a no brainer. If you have the skill and time to swap, I'd take a 450hp LS over a 450 LT any day for those reasons.

 

[95wagon]

My brain melted slightly seeing Windows XP

Most of the tuning programs were done long before 7-8-10 and often like to run in compatibility mode anyway.
As you know, the LT1 PCM is little fragile from a bricking standpoint.
How many bell and whistles do you want going on in the background ?
Here, feel better ?

 

[shakenfake]

I do feel better thank you

 

[MadOTC314]

I'm even happier with Summit Racing this afternoon. I looked at the engine I bought on their site again over the weekend, and the price had dropped by almost $400. I called them this morning, and they refunded the difference back to my credit card.

 

[MadOTC314]

Test fitting some parts tonight, trying to figure out what I forgot to order.