I would like to throw a button on my dash to switch the AEM to race gas setting, and of course, I would like to keep the dash completely stock looking.

As I have a 95 stealth, I got about half the buttons of a 3000GT VR-4. or even a base model.

So what button clusters can I yoink out of a 3000GT that "push in" and have a light? Something along the lines of the rear defosters I was hoping.

Active areo? I think that goes down by the cruise control... Not really what I was looking for, but could work.

I was more thinking on the dash around the steering wheel, but don't know what buttons those would be on a 3000GT.

Any help would be appreciated.

Thanks guys.

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The 3000GTs have three round push buttons and one dummy just so they're even. The left side is fog lights and the dummy. The right side is the ECS and the rear window defroster.

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excellent. thank you very much.

I need a right side defroster and ECS set then.

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You can also grab a popup headlight button. aka Your dummy. Wiring is all there for it too.

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06 Blue EVO 9

Active exhaust switch... no light on button but one comes on in the gauge cluster

O rly. I could have sworn that the spare "buttons" on my dash were all fake.

the benz has decided to start sucking at a thing called internal combustion, so I'll check that tomorrow.

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well. The two lower buttons on my dash are infact unpushable plastic. So back to the original idea of the ECS button. Or the buttom button on the otherside, which I am assuming is the button that greg mentioned. I don't really care which one.

However. the light on the dash for the active exhaust intreges me a bit. That would be a good idea. Push the race gas button, and have a light on the dash to let you know that the AEM got the signal. And to let you know if it accidentally got pushed and you are on pump gas.

Seeing as the AEM controls the dash lights, you would think that would be doable.

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Few questions about the AEM to race fuel setup...

Bear with me, I'm guessing there's a separate reservoir for the race fuel.
1. How is that hooked up? I don't want a page detail synopsis, I wouldn't put you through that, but just a brief description...
I was thinking about doing something like this but only with the exhaust instead. Maybe later on when I have a car worth doing it to, (switching from stock to a louder and better sounding aftermarket exhaust)...

2. How long with that setup would the lag time be for the race fuel to be delivered to the engine, (through all the lines and things if that applies)?

3. Is that harmful to the engine to be one moment, burning driving fuel and then next having high octane fuel?

4. For this setup, wouldn't the race fuel circulate back into the AEM fuel tank since the lines are always circulating the fuel. Not that it matters all to much, just a question. Would there be a way to combat this?

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You have the basis wrong.

You drive the car around until it is low on "pump gas" and then dump in whatever your chosen "race gas" is. Fill the tank. Then push the button, the computer flips over to the other timing, fuel, and boost maps. You drive until you would like to put "pump gas" back in. Drive around until you are low on fuel again, and then stop at any random gas station, and fill the car up with "pump gas." Push the button again, the timing, fuel and boost maps are all loaded right back in.

Drive off on Pump gas tune.

You can also pull the cork on the bottom of the fuel tank and empty it that way as well.

I would also consider using E85, but the problem I have with that is they change there mixture. that would bug me.


You could to a set up like you are talking about. All you would need is two seperate tanks, and two seperate fuel pumps, and a bypass for the fuel pressure regulator. THe bypass would bleed out when you held a switch down with booth fuel pumps shut off.

turn over to the other tune and you could have the AEM set up to flick a relay for the race gas pump to kick in.

I just like having my stock fuel tank and fill neck otherwise I would look more into this.

It would not be harmful as long as you did not push to hard before the race fuel was completely full in the line, which would take a few moments to build the pressure back up, and the engine to burn up the little bit of pump gas now mixed in the fuel line. let it idle for a bit and you would be more than fine.

(answer the post that you post when you remember it.)


Also, they have electric exhaust cutouts. I would think you are talking about something like that.

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Thanks TT for the clarification and further information, it is much appreciated. I'm always looking to learn, it just takes effort to ask it.

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