I am considering running a cut out for my setup-

I am under the impression, that I would need 2 different tunes, as the VE of the motor would skyrocket with the cutout open, leading to a lean condition.

With Hondata S300 and/or Neptune RTP, can I have 2 differnt maps, and switch them easily? I have AC/PS so I dont know what ECU switch I would use to change maps-

Or would it be easier just to have 2 maps, and switch with the laptop everytime I change-

 

With the RTP you can use a switch just like you said.. I usually use the A/C switch to do the map switching. All you do is ground it via a toggle switch and it will automatically switch to your second map.

It can't get much easier than that.

 

He still has AC. You can use several other inputs.

 

Hey HRTuning- What other options are there for switches? Thanks a ton!

 

With the Hondata s300 you can use 2 different maps with that, or use a nitrous/aux output, or both.

 

Opps.. reading > me.

But yes, there are several different inputs you can use other than ac/ps. I would just download the RTP software for free and check it out for yourself

 

AC Switch Input
Power Steering Input
VTEC Pressure Input
Service Connector Input
Brake Input
Starter Signal Input

The pin positions are given in the software. Best thing to do is check the software out for yourself. Switch maps is under Extras in the parameters. NepTune was the first OBD1 editor with dual maps and switching functionality, and as many will vouch, it works seamlessly.

 

So I am using the p75 nonvtec ecu, could I use the vtec output? Thanks!

 

You need to use an input, not an output. I'd suggest using the service connector, which is not necessary since you have full control via software to check codes (Or you can use the gas pedal with the engine off to check) and set timing.

 

I know this is an old thread, but this is something I need to check into with my Neptune RTP. I'm thinking of doing the same thing as the OP, but I'm affraid that my A/C control unit has some possible cracks in the solder.

If I did this, I could also hook up a switch to the appropriate port on the ECU?? And all it would need to see is a grounded signal??

 

The A/C switch does take a ground and a switch can be wired directly to the ECU pin/wire.