Introducing the 2007-2013 Mazdaspeed 3 ECU Relocation Battery Box. Protect your ECU, retain your OEM size battery, and provide clearance for up to a 3.5? intake! The battery and ECU relocation box features a separate front ECU panel to improve ECU fitment as well as allow easier access to the battery. The box is manufactured via thermoforming from durable ABS plastic for a near OEM look and finish. #ZoomZoom!
Check out the installation instructions below. Share your performance review with the CorkSport community once installed!
By relocating the ECU to the battery box interior, the CorkSport ECU Relocation Battery Box protects the ECU from the elements and provides clearance for up to a 3.5? intake.
CAD designed and manufactured from durable ABS, the CorkSport ECU Relocation Battery Box fits great and will stand up to the test of time.
The CorkSport ECU Relocation Battery Box features a three panel design to improve the ECU fitment and battery access.
The CorkSport ECU Relocation Battery Box also includes an anodized aluminum battery tie-down bracket and easy to access thumb screws for the lid. No tools necessary to access the battery.
Will this fit my 2010 Mazda 3 Grand Touring (non speed)? Any alternatives?
People have tried this on a gen 2 and had no issues. Should be the same mounting locations.
2008.5 Speed 3, factory hood TMIC/Batt box ducting; I noticed the batt box port is lacking on the CS box, I can only assume this isn't a concern because you haven't included it in your design. At what point should I or might I be concerned about the ventilation of the batt box? Also, looking at my engine bay with the stock(!ugh!) intake box, it looks to me like the CS batt box might be a squeeze on its own (I know, CS SRI would solve that, it's on my 2do list hehehe, 1st things 1st).
It is not anything to be concerned about.
Will the optima red 35 fit this btry box also, Thank you
yes it will
Will a 4 inch intake fit with this box or is 3.5 inch the max?
People have done it, Although 3.5" max is rec. If you want to go smaller I would advise a 51R conversion.
If installed with CS front strut tower brace, can the battery be removed without having to remove the brace?
Is this designed for a stock sized battery or 51R battery?
You can fit both, but it was designed for stock sized battery.
I have 3.5" JBR intake on GTX2867R... will it fit? What if i can't get it to fit, can i return it, and if so, how much $$ to return it?
It will fit. It was designed to support large diameter intakes.
$168 for a plastic box? Come on guys, you can't be serious. This is disrespectful to the customer.
There is quite a bit that goes into engineering a battery box. It is a great piece!
I agree. 168$ is a lot to ask for a plastic box that has no performance gains. I like the idea of hiding the ECU cables, but you guys are asking way too much. This seems to stray off from Corksport's usual fair prices.
I apologize. These are the prices listed by the bossman!
Is the battery going to crush ecu? The tie down only holds it down, not hold it back.
No it will not. The ECU should be just fine.
Will there be fitment issues with a cold air intake box?
No there will not.
Does this box make it possible to fit easily and use the Corksport 3.5" intake?
That is what we designed it for!
I can use this battery box in my mazda 3 s?
It will not. There are a few small differences that make the battery box not fit with your specific model of Mazda.
Does this require any extending of the ECU wiring? Are there any concerns with the ECU and battery getting too hot since they'll be enclosed?
It does not require making the ECU wiring longer. There are no concerns with it getting too hot as the box is vented so it can breathe.
Will you have to unplug the harnesses on top of the ecu in order to place it inside the new battery box?
Nope! All you need to do is fold the ECU over into the box.
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