Shouldn't be a problem. Most likely you already have maps pre-loaded that will work for the new ECU type. The AP will detect the new ECU and give you the same selection as before but with the new prefix. That's what happened to me.

 

That is what I was assuming. I've just heard "update" and assumed it was a flash. Some who have had to pay for it say it was $100-$150, which is inline with a flash I think.

 

What if I need to use one of the maps Jeff created for me? The stock maps had shifting issues with my car, but a couple of the maps Jeff did fixed that and are what I would be putting back in.

 

If the tune that you were running previously ran good, I would tell the shop not to update the ECU.

If they end up updating it, it'll be OK, we might have to make another map if you have problems again.

 

In that case he would need to re-map those to the new ECU type or they will not show up.
Edit: Sorry got called away and Chris beat me to it.

 

Chris, so what you are saying is just go ahead and reinstall the AP and my favorite map? Sounds good to me. I was assuming that any change to the ECU would require some sort of tinkering either with the AP version or the map version. And of course I'm watching the clock tick towards that July 1st deadline when support ends.

 

I should have specified that I am motivated to go ahead with any update they recommend, as I think the purpose is to help with the carbon issue.

 

The thing is that if the ECU is updated, the map that you were using may not be compatible.

We have all of the ECUs loaded as far as I know, but you just wouldn't be able to use the custom tune that we made for you. But either way will be fine, just let me know if you have any issues.

 

Thanks Chris. I just got a call from the dealer and they are going to update after the carbon blast. Is is safe to just re-install the AP and see if the prior custom map/s will work?

 

It will be fine to have them update your ECU. If the AccessPORT doesn't load even after running a beta update, let me know.

 

Tx again Chris. As usual, good to know you've "got my back".

 

Which is a better live data channel to use to make sure the car is not knocking under boost?

There is the knock flag counter, then there are also the 4 channels for the knock sensors, 1 on each cylinder. Those read in voltages, so it's hard to determine what is good and bad.

 

OK. The dealer flashed my ECU after the carbon blasting. The mech said that the new program messed with cam timing and increased fuel pressure and that they have not had any cars return for carbon cleaning that have had the update.

I have reinstalled the AP and my favorite map without a hiccup. Now a technical question. Will the map that I re-installed retain the changes to timing and fuel pressure that are in the new flash, or do I trade off the "anti carbon" changes for AP performance? I should add that the map Jeff did that works best for me features mostly boost increase with only "minor" other changes.

 

The info the tech told you sounds like BS. Since DI doesn't touch the valves.

 

Not so sure it was BS. I found this excerpt from an article by Edmunds on the subject which seems to corroborate:
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GM’s V6assistant chief engineer, explained how GM has designed its DI engines tocombat carbon buildup: “We maintain great engine function and performance inour all our DI engines through an optimization strategy with our valve events,”he said. “Our intake-cam timing, injector targeting and timing of the injectionevents are optimized to avoid direct fuel contact on the intake valves. Thisstrategy keeps smoke and soot formation to an absolute minimum, which in turnprevents excessive deposit formation.”
[FONT=Times New Roman][SIZE=3]Full article is here:[/SIZE][/FONT]
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http://www.edmunds.com/autoobserver-archive/2011/06/direct-injection-fouls-some-early-adopters.html
Further found this post from another NAM group also reinforcing:

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...These are common cylinders that seem toalways show up when misfires occur due to needed CC Service. It has to do withdirect injection as well as the original mapping of valve overlap (or the lackthere of). Usually when the dealer performs CC service, they will also performa complete (if necessary) car encoding of all modules (which will update thecurrent DME encoding) which has improvements to valve overlap to help withcarbon build up.
Full thread here:
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https://www.northamericanmotoring.com/forums/stock-problems-issues/236427-fuel-pressure-riddle.html
[FONT=Times New Roman][SIZE=3]So now I want to know more than ever, does my Alta map remove these timing changes? Chris, do you know?[/SIZE][/FONT]



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Sorry for all that mess in the post...something to do with the cut and pasting.

 

As long as the AP was able to tune the car still after the update, it must not be that new of an update from the dealer. Either way, our tune wouldn't have the same parameters built in as the stock tune would unfortunately. But there's not much a tune could do to help with the carbon build up, since it's more of a mechanical issue rather than a tuning issue.

 

Thanks Chris. I was afraid of that. So as an alternative, what do you think of the CPV delete and catch can strategy?

 

Pcv :(

 

Running a catch can will make a big difference in keeping the valves clean. I wouldn't recommend plugging the PCV though.

 

Bueller?

 

I am pretty sure that my AP stage 1 tune blew my engine at 39k miles so buyer beware. I just paid $6k to have the engine replaced because of a blown piston. I fully understand the risk I took and Alta's disclaimers but it still crazy stupid to blow an engine with an intercooler and stage 1 AP. Cant believe there aren't more instances of this.

 

There's a small company called Saikou Michi making a dual OCC for the R56. It's worth checking out. I just completed an install, painful but doable. Results TBD. A single BSH just wasn't getting it done --- lotsa back-pressure in the crankcase with one PCV port plugged.

 

oldbrokenwind, I'm guessing the Saikou Michi is pretty expensive? Would using a second seperate cc on the passenger side do the same thing?

 

Pricing is comparable to competitors single OCC unit. A second separate unit would do the same job. Problem is --- find a mounting location for a second unit.
Try their web site --- http://saikoumichi.com/
This is a very small company, trying to expand their product base. It's worth contacting them.