im not sure why your contact had trouble finding it. i will post a pic of my reciept. the link below is for the car and driver long term test for the ralliart. the 2nd to last paragraph contains the tsb. it labels it as an awd only update. the tsb is valid.

http://www.caranddriver.com/reviews/...oad_test_intro

 

if 22 is the latest the dealership are using, that is the one.

 

-search 52680022 elsewhere and the hb post pops up. post 12 has the dyno comparison. from 4,000 the car was noticeably stronger and smoother. that is backed up by the dyno plot.

-this post is for people with factory maps. going to a factory map from a custom tune is going backwards. this is unless you need a factory map to race in a desired class.

-to get this flash, i would look at some of the complaints listed from the begining of the evo x. you could say you have had idle issues that happen sporadically and sometimes cause the car to stall. you can say you rode in a friends x that has had this tsb serviced and their car "runs" better.

-the truth is always debatable. facts are facts. the fact is hb dynoed rom 22 against rom 15 and got better results with rom 22.

 

no free power for you! lol. the dealer may have updated your rom before or at purchase. youre car was a much better running car than mine off of the dealers lot. my original rom was as bad as a number of threads described vs the new factory flash, cobb ap or custom tune(the best).

 

Perfect resume

 

Guys, are you sure there's a noticeable gain between ROM 52680018 and ROM 52680022? I had 52680018, then I updated to 52680022: honestly I can not feel ANY difference.
HB Speed comparison is referred to old ROM 52680015, but here I read of people saying there's a gain also between 52680018 and 52680022, and this last one is leaner too: but I made some logs with EvoScan (3rd gear WOT pull) and AFR is the same between these 2 ROMs... And also the calculated power is the same (ok, it's a calculation based on rpm variation and not a dyno run, but just for comparison it can be good since I made the pulls always in the same road and same conditions).

Thanks for any clarification on this.

Stefano

 

i can only speak of how my car ran after getting the latest factory rom flash. it was noticeable. im not sure of the exact rom in my car prior to the rom 22 flash. from rom 18 to 22, there may not have been as many dramatic changes from from rom 15 to 22.

 

Seriously guys. The stock tune is a turd. Even if they polish the turd, it's still a turd. Running that rich isn't going to get you any power. Get a tune or don't worry about it.

 

Sure...
I will start soon to tune it, but now I was making some logs just to understand what happens with the stock tune and I was curious to understand the differences between the stock ROMs.
Now I have the situation quite clear and I made some experience with EvoScan, so I can start tuning it a little. Obviously I will start with very small changes, but for sure the first thing I will do is leaning WOT... from AFR 10 at least to 11 in some points. Then I will start to play with boost and timing.
I'll update you guys.

 

therocket, good point about the lack of gains from 18 to 22. There was already a gain in power from 15 to 18. So it's possible there really isn't any additional gain going from 18 to 22. You're right that HB Speed's dyno comparison was 15 vs 22 (worst original flash versus latest). Thanks for sharing that the AFR's are the same between 18 and 22. Can anyone confirm what else in the ROM has changed? From my understanding, the maps are the same, but the logic in the code (such as how the fuel pump relay is switched) has been modified.

 

Here you find the 2 logs I was talking about: they are REALLY very similar, I have them here in Excel and pratically you can overlap the 2 graphs, but I ensure you that one is with ROM 52680018 and one with 52680022 (sorry, here I had to stop at 7k rpm because of an idiot in front of me).
My only mods are HKS Hi-Power CBE and Ralliart panel filter; ambient conditions were 98.5 kPa (14.3 psi) and 28°C (83°F).

52680018


52680022



LaXGSR, we can compare them also to your stock log of ROM 52680018


and Tephra's log with stock ROM (which one? Maybe AUDM?)


and finally nj1266's log of ROM 52680015


In any case, during next we I will repeat 2 logs directly with 52680015 and 52680022. Then I will start tuning it...


About new fuel pump relay management, etc I have a question for you: are we sure that all these mods are into the ROM? The ROM simply cotains tables the ECU software reads from, but then some mods could be directly in the sofwtare, not in the ROM. So, when we update only the ROM maybe we are missing something.
Am I wrong?

 

Thanks for sharing your logs! Those are really helpful and look identical to me

Good question about the whether the mods are to the ROM or elsewhere in the code. Someone will have to answer that, but from what I understand, our EcuFlash ROM files are more than just the lookup tables. They also include the code (Note: I could be very wrong about this). The reason I think they also include code is that tephra is able to make mods and have it flashed via EcuFlash.

Also, HB Speed presumably used EcuFlash to flash the 15 versus the 22 ROM to get their dyno results. I think that when we read/write a ROM, it's everything - lookup tables + software...someone correct me if I'm wrong...

 

Is there any way to find out the version of the software through the nav or an accessport?

 

If you have an AccessPort, you are using whatever ROM Cobb based their maps on. And no the Nav won't tell you a ROM version.

 

Mostly correct... however you will notice when you start to flash you have a list of check-sums and yes / no. Only blocks that need to be flashed (because they have changed) are flashed. The other blocks are not flashed because there are a limited amount of write cycles on the storage medium.

The type of memory used requires that you clear a whole block, then write back what you want (IE set to all 0, then change what needs to be 1). That is why you can't just write 1 small change (for instance if you just change your injector scaling).