F/IC Controller on a Jet Ski

[hitman]

Hello,

I joined here to inquire about trying to hook up an AEM F/IC on a 2008 Yamaha Supercharged waverunner.

Obviously there is no plug and play harness for jet ski applications, but is there some document or something I can look at that will tell me all the components that will need to be wired into the AEM unit to make it work the way I want it to?  Is there a way to raise the rev limiter with this piggyback unit?

Up to this point there is no way to retune the stock ECU so I'm looking into the F/IC as an alternate way to add more fuel and timing for higher boost levels.  We're able to achieve higher boost levels by switching out the supercharger wheels for aftermarket ones that are lighter and build more boost.

Any info you guys could offer would be great appreciated.

Thanks,
Todd

[SV]

Check out this thread for most of the common information you would need to make this work: http://forum.aempower.com/forum/index.php/topic,25388.0.html

In the second post, there is a set of instructions that will tell you how the F/IC needs to be hooked up.

Unfortunately, there is no way to raise the rev limiter with the F/IC at the moment.

[hitman]

I found that manual.  Thank you.

About the rev limiter, is there any other way to raise it?  Any other options offered by AEM?  Another guy running a F/IC on his jet ski said he was able to raise the rev limit.

There is also a boost limit built in to the stock ECU on my ski that starts to close the drive-by-wire throttle body when manifold pressure reaches 145 kpa.  I'm guessing since I can regulate voltage that the MAP sensor sends back to the ECU, I can get around this boost limit?  Sound possible?

[hitman]

Can anyone explain to me why it's only possible to retard timing using the AEM F/IC and not also advance it?  I was pretty dead set on using the F/IC on my jet ski as I like the interface and software but since the base timing tables in my stock ECU use almost no timing advances I would be leaving quite a bit of untapped power on the table if I am not able to advance it.

[SV]

Can anyone explain to me why it's only possible to retard timing using the AEM F/IC and not also advance it?  I was pretty dead set on using the F/IC on my jet ski as I like the interface and software but since the base timing tables in my stock ECU use almost no timing advances I would be leaving quite a bit of untapped power on the table if I am not able to advance it.

The reason the F/IC cannot advance timing  is that it modifies the original signal rather than using its own signal from the crank sensor. If you have the time to spend and it's feasible, you could change the location of the crank sensor to a more advanced position to confuse the factory ECU and then fine tune it with the F/IC with the ignition retard and injector response (assuming the crank sensor determines when the injectors will fire).

[hitman]

Awesome info.  Looks like I found someone who will raise the rev limiter in my stock ECU for me and might even be able to add in some timing across the board and then I can just use the F/IC to retad it back to zero and start adding it back in slowly.

Any issues with the F/IC working with my drive-by-wire throttle body?  I'm about to order one of these units and just want o tmake sure.  I'll also have to try and open it up and seal it completely with silicone before I install it since this is a jet ski applicaiton.