2018 Civic Hatchback Sport

Hondata model coverage & ECU application questions.
Holy Peanuts
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2018 Civic Hatchback Sport

Post by Holy Peanuts »

Hi,

I am from Canada. Which Flasher would be the one for my vehicle?

Also, is their any possibility of damaging the engine by using the flasher?

I'm new to this so heres to learning! :)

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Hondata
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Re: 2018 Civic Hatchback Sport

Post by Hondata »

What is your ECU part number?

We have not seen any engine damage when using the built in calibrations.
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Holy Peanuts
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Re: 2018 Civic Hatchback Sport

Post by Holy Peanuts »

Where is the ECU number located? I looked for it yesterday night and couldn’t find it

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Hondata
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Re: 2018 Civic Hatchback Sport

Post by Hondata »

On the ECU, in the engine bay. The part number starts with 37820-
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Holy Peanuts
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Re: 2018 Civic Hatchback Sport

Post by Holy Peanuts »

I need some help locating it. Where’s the ECU?

The engine bay lohas is like this

https://www.openroadhonda.com/assets/st ... 640_25.jpg

Jun43
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Re: 2018 Civic Hatchback Sport

Post by Jun43 »

to the right of the air box

Holy Peanuts
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Re: 2018 Civic Hatchback Sport

Post by Holy Peanuts »

Air box being the thing middle up front?

ECu would be between that and the fuse box? The thing with the 2 gray clips on top? I don’t see a serial number anywhere on that.

Jun43
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Re: 2018 Civic Hatchback Sport

Post by Jun43 »

its on the left side at the bottom side panel of the ecu.

might have to take the airbox off

Holy Peanuts
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Re: 2018 Civic Hatchback Sport

Post by Holy Peanuts »

Found it!

37820-5AN-C15

Jun43 you are a boss of bosses, thank you.

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Spunkster
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Re: 2018 Civic Hatchback Sport

Post by Spunkster »

That ECU is supported.

Holy Peanuts
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Re: 2018 Civic Hatchback Sport

Post by Holy Peanuts »

Thank you spunkster.

I’m leasing the car. Would you recommend I don’t use the flash pro in that case?

My wife is a little nervous about it and I’d like to ease her mind

Holy Peanuts
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Re: 2018 Civic Hatchback Sport

Post by Holy Peanuts »

Basically she’s concerned about voiding the warranty and causing additional wear to the engine or parts connected to it.

Also, is it easy to revert to stock settings for the ECU for when we return the car?

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Spunkster
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Re: 2018 Civic Hatchback Sport

Post by Spunkster »

This is a decision that is completely up to you.

It can be returned to stock at any time.

Holy Peanuts
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Re: 2018 Civic Hatchback Sport

Post by Holy Peanuts »

I understand that.

I’m looking for an experienced, professional opinion.

OldBut
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Re: 2018 Civic Hatchback Sport

Post by OldBut »

Same question, for 2019 Civic Hatchback Sport Touring. ECU is 37820 SAN LJ1, if I read it right

And same question re effect on warranty, if flashing from the CARB limited Hondata unit.

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