Mazdaspeed 6 Intermittent Lack of Power Concern Fix Available

[crossbow]

2006 Mazdaspeed6 intermittent lack of power concern
-new PCM calibration is now available on IDS.

Cal. Spec.
Filename is SW-L3K9EJ000

NEW PCM CAL.
P/N is L3K9-18881J


Fed Spec.
Filename is SW-L3M8EJ000

NEW PCM CAL.
P/N is L3M8-18881J

Should any 2006 Mazdaspeed6 customers complain about an intermittent
lack of power concern, please update your IDS tool to software version
42.9 P6 and reprogram the vehicle's PCM to the latest calibration
(L3K9-18881J).

What does this mean?
Any power loss issues you experience, please call your dealer immediately and ask them if they have updated to 42.9 P6, and if not, if they would please check the mazda tech line for information about

Intermittent Lack of Power Concern

It takes some dealerships sometime to check the tech line...so please call PRIOR to visiting. Encourage them to check the tech line until they get the information about the new software download. The key words are the bolded and enlarged text above.

Do note that there is no information on "exactly" what this fix does. Those with boost gauges, please record data BEFORE and AFTER the fix. It will be invaluable to figuring out what changes mazda is making. Anyone with a data logger, please capture data prior to and after the fix as well.

If you have NOT had POWER LOSS...I'd AVOID getting the fix until more information on what it actually does is available. Get the fix if you are having issues, but avoid getting it if you haven't had any.

Here is the info from the previously pinned sticky on what the powerloss is.

What is happening when the power loss occurs?
When the Mazdaspeed 6 detects 1 knock, it cuts the electronic throttle input to 33%. That means if you have the pedal floored completely down, the max the PCM/ECU allows the throttle plate to open is 1/3. Since the throttle is electric, the PCM can completely override any and all driver inputs for the safety of the engine. Those who ever owned a 6 with a bad maf sensor know exactly how this works.

What is knock?
Knock, or pinging/denonation, is when the unburned fuel/air mixture in the cylinder combusts prior to the flame front (of the actual combustion process) completes. This causes an interruption in combustion due to the two shockwaves intersecting and generally results in a metallic "ping" sound.

Why is this occuring the MPS 6?
The main problem seems to stem from the lack of pure 93 octane gas in many areas of the United States. In Japan, 93 octane gas is available in all areas, but this is not the gas in the United States. Higher octane gasolines reduce the chance of premature detonation by increasing the activation energy required for combustion. (Simple explanation). This help prevents a mixture of air/fuel from detonating prior to the flame front (from the spark).

Other causes of detonation involve excessive combustion temperatures, (which can be related to cooling issues with either the air charge or the coolant system), timing advanced too far, and running too hot a sparkplug.

What is Mazda doing about this?
Mazda is adjusting the # of cycles it takes the knock sensor to throw the car into 33% throttle mode through a PCM/ECU reflash. The sensitivity is also going to be addressed, but not significantly, as the knock sensor is still there to stop detonation from occuring. The cycles should greatly reduce the # of occurances from owners. This Flash is now available and will slowly populate to dealers across the USA. Please call your dealer and ensure its availability PRIOR to visiting.
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Here is an uncluttered link with the information (in case this thread goes beserk)
http://forum.mazda6tech.com/viewtopic.php?p=43549#43549

[Duncan]

Gotta thank you for being on top of this stuff, Crossbow. I'll pin this thread until a firm resolution to the problem is found.

[crossbow]

Duncan this is the firm resolution. Mazda reflashes the PCM.

[mazdaboy06]

Very comprehensive discussion, crossbow. Need to thank you for that.

__________________________
Mazdaspeed 6 Accessories - Download the Mazdaspeed Performance Accessories 2006 Catalog by Mazda USA

[decz101@Yahoo.co.uk]

Cheers crossbow

I had this problem (or so i thought) - was just about to ring the dealer to flash the PCM and the next day it fixed itself! I musta been dreaming :P

Now i've got a radiator cap issue that need replacing, as well as other car parts <- Anyone know if that place is good??

[fac3less.v0id@gmail.com]

Thats informative, i learned something new today..thanks

[briando]

I have really noticed this problem in my Mazda 6. From a dead stop, i have very little pick up before a ridiculous delay. I actually went to the dealer after having her for a couple of months, afraid something was wrong with it.