How many 458 Italias with original ecu and exhaust crackles?

Shiv ....looks like u r a man with a plan.

 

Shiv, I have a question. If I brought you a 2010 Italia that had its ECU reflashed by the dealer in 2013 (and thus no longer has the desired run-on) are you saying that the information for the pre-reflash version of the ECU is actually still in there, and can be "restored," as opposed to you having to re-write it from scratch?

I've found a 2010 Italia that I might buy, but the ECU was reflashed by the dealer when some service work was done a few year ago. I'd feel a lot more confident if you said you could "restore" the previous version, as opposed to having to re-write it...

Your thoughts?

 

Someone needs to do this... any takers?

 

I have a 2010 with the snap crackle and pop and had dealer open the valve. Thanks for the info I will not update ECU. The noise is glorious.


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If your ECU has been updated, your old calibration has been erased and a new one written over it. It is likely that most of the data is no different between the two calibrations. To see what has changed, we do a comparison. This comparison lists the differences between the tables. It shows the address of the change and what the value was and now is. We then look at that address and try to determine what look-up table contains that change. Is it a throttle mapping mapping? Is it a fuel related table? And so on. Once we determine what the table is we can play around with remapping the new calibration with the old value. This is exactly what I've done with my 2010 (that has been updated in 2013). I isolated the relevant changes and literally cut and pasted the old values in the new calibration's tables. Specifically, the fuel cut-off, throttle and exhaust valve control tables. I even took it a step further and extended the fuel cut delay and kept the exhaust valve open longer to make it sound even better to my ears.

So to answer your question, our old 2010 ecu data is no longer in your ECU that has been updated with 2013 data. But that is not a problem since the only thing we need to do to restore any aspect of 2010 behavior is to isolate the relevant changes and restore the original data bytes. For perspective, we may only be changing 200 bytes which is a very small portion of the entire mapping data memory size of 2mb. But keep in mind even when making changes to only a few tables, the entire portion of the mapping data (2mb) must be erased and re-written. It is not feasible to simply rewrite a single block of memory. Also keep in mind not all the updates that Ferrari has issued in each sw revision is bad. Most of them are improvements that we aren't really aware of. It's just that we notice the obvious stuff and get bummed out when something as endearing as exhaust crackles disappear. But that's easy to resolve while still keeping all the other improvements. I would rather have an updated SW version that has been modified for exhaust crackle (among other things) than an old 2010 sw version that is untouched.

I hope that answers your questions. If not, please let me know and i'll explain further.

 

Thanks Shiv. So, my only question is this: If I buy this 2010 car that was reflashed in 2013, will you be doing exactly the same work as you would be doing if I bought a 2014 Italia that never had the run-on? Or would your procedure be any different, since the software in this 2010 car originally had the desired run-on, but then was lost due to the re-flash in 2013? ... Just want to be sure I've got this straight.

The reason I ask is this: I can buy either a 2010 Italia that has been reflashed, or I can buy a 2014 Italia that never had the run-on in the first place. So I'm just wondering if your approach would be the same, or different, to these two different cars... And if there is any advantage to buying the 2010 model, since it originally had the ECU that produced the desired run-on?

Then I'll know which car to buy! Thanks Shiv!

 

Same approach either car. Both cars have same ECU hardware. Remapping each will give the same result you are looking for. Get the newer car

 

I agree - a video would certainly help!

 

Shiv, I may purchase a 458 Italia next week, and take you up on your offer of the free ECU tune. I would ship the car directly to your shop, and have you perform the work. Then, I would ask that you post videos online for all of our F-chat friends to see (or, more importantly, HEAR) the results of your work....

And if the results of your tune sound different than desired, I'm assuming you could/would re-do until the desired sound is achieved... Basically I'd want it to sound exactly the same as a factory original ECU 2010/2011 Italia... no more, no less, just the same.

Are we on?

 

That's a very kind offer! I appreciate it. But I'm really looking for a locally owned 458. If no one comes forward in the next week, I'll will definitely get back to you

 

For point of reference, how does the original 2010 458 run-on compare with what I get in my Lamborghini Huracan? Love that sound although I find the stock exhaust way too quiet in all but full throttle.

 

Any chance you will be doing this for the Ferrari 360. I get some of it before the car warms up and sadly, it disappears.

 

Update: we have a local volunteer with a 2013 Spider who I'll be meeting up with next weekend

 

Carlo , I'm not sure what my 2012 spider has going on with the ECU , but when I let off the gas I get crackles and what could be categorized as epic fart sounds. Do I qualify ?

 

While I have never done any testing on a 360, I am very familiar with that family of ECU (Bosch ME7.3) so I'm sure we can do it. What's nice about the ME7.3 is that the ECU calibration is readable through the diagnostic port (ECUs don't need to be removed). Is this something that would appeal to 360 owners?

 

Shiv have u done any work with v10 r8's

 

Many states in the USA has emissions testing requirement for annual registration. After the original 2010 ECU is restored, will it present a problem of not able to pass the test? I vaguely remember that the 2012 ECU update was specifically about meeting US Federal emissions requirements. Anyone could comment on relevant facts or experience?

 

Unfortunately i have not. I've done a little work with the R8 4.2 but I sold mine (replaced with a 458) before I could complete the project.

 

We are not restoring the entire original 2010 calibration. But rather just the bits and pieces (less than .01%) necessary to restore the burbles and what other features the customer wants such as more power, remapped throttle, disable warm-up, disable catalyst monitoring, etc. Most of these will have no effect on emissions testing. But some will. Fortunately the customer has the ability to keep the OFT in the glovebox and flash the ECU back to stock in at any time. And then flash back to the customized map when desired. No need to remove, ship and reinstall ECUs again.

 

I'm sure 360 owners would love it. The fact that companies are engineering it into their cars (Jaguar F Type, Mercedes AMG GTS, Lamborghini) indicate its widespread appeal. And Ferrari owners are sound aficionados!

 

I would suggest not eating bean burritos or broccoli before you drive your 458. Good thing its a spider.