Can someone confirm that the PFC can only hold 1 map? Is there a fast solution to flip between 2 maps, like a piggyback mod? or is the only way to swap out maps with a datalogit?

what ecu's can hold multiple maps?

 

With a datalogit you can flip between the two boost selection if you set up a remote switch. I haven't set it up before but a couple guys have. It's explained in the DL instructions
There are various ECU's that might have a separate map for nitrous/methanol/whatever operation or switchable boost settings. The AEM EMS might be the closest affordable option with what you are looking for:



The closest thing I know of with "fast map switching" to change larger portions of the calibration are some flash programmers for newer cars. But I think the Nitrous options on the EMS will accomplish what you want to accomplish. You could use the nitrous control for a separate fuel and timing map even if you don't actually trigger anything with it. And you could wire it up so that one physical switch also triggers a high/low boost control map within the EMS. You'd just have to run wires to both inputs.

Be advised... this is going to be complicated and time consuming. You're going to have to set it up yourself or pay someone knowledgeable with both Rx-7's and the AEM EMS for many hours of labor.

 

thanks for the info arghx you always pull through with a ton of knowledge!

I ask because i want to run my wg spring (10psi) as my daily map with my 3" exhaust then at low and high boost dump it out of my 4" midpipe to by pass the 3" but i dont want the car running too lean/rich

 

If you've got enough safety margin in the fuel and timing it will be fine with the same map. It would take significant time and money to switch your engine computer. It's up to you though. There are a lot of features you can take advantage of if you use another engine management system.

 

Link G4 RX has dual map settings. My cousin has a 370 Z and he has a setup where he can chose between 5 different map settings using his factory cruise control. It's pretty insane what some of the hacked stock ECU's can do these days.

 

Just have a high and low boost setting on your boost controller with the same map >_>. Why so complicated.

thewird

 

I think this is the best idea also. As Arghx mentioned you can even use a datalogit to do this without a boost controller if you want to keep it simple, just need a solenoid.

 

and with the datalogit you can setup a switch that toggles from 2 boost settings, I used the fog lights switch.

It feels like KITT when pressing Pursuit! lol

 

Haha, I have mine wired to the oem fog light switch as well. Its better than an ///M button!

 

You could wire up a single fog light switch to raise boost, switch on water/meth, and some kind of cutout at the same time. So yeah it would be like your little ///M button.

Of course you could do all this with the AEM EMS and have more control. But then you have the cost in time and money of switching computers.

 

Not sure if this is a simmilar but my car was tuned for 18-19psi but i run a constant street boost of 15psi with no problems and room for boost spike .. I also switch over to a manual boost controller because the digital controller was crap. In my opinion the digital boost controller are nice and cool looking but i like to be simple and i found out my solenoid was not working properly... The manual boost controller has not failed me yet and it always works...

 

i dont think you guys are understanding... its not just low and high boost. i have a boost controller for that.
i want my 10psi (wastegate spring) to be with my 3" exhaust.
low boost 14psi and high boost(?) will be dumped out of my midpipe whihc is 4"

hence 2 seperate maps. i dont want to run lean/rich when i swich exhaust (i intend to use a electric cut out switch)

 

You do realize the change in A/F will be hardly any? Just tune it with the 4" and done. And since when is 14 PSi high boost o.O, thats the minimum for most single setups lol.

thewird

 

lol wellll actually no i didnt realize that.. hahaha reason being, when i searched, i got most my info about the electric cut offs on an evo forum. and from that search, everyone said to tune it before they actually use the cut out... so that worried me that their is a significant difference... was that a wrong assumption? if so that saves me a lot of worries... how big of an a/f difference do you think it will be?

hahah youre really busting my chops arent you...
let me rephrase that 14 is my LOW boost, high boost isnt determined yet, pretty much whatever it takes to get me over 500whp lol. but no more than 20psi

 

Going from 2.75" exhaust (3" downpipe to 2.75" flange) to full 4", there was no difference until high RPM and it was only like 0.1-0.2. Just tune it with the cutout open and dont worry about it being closed.

thewird

 

awesome, thanks a lot wird!

 

Yeah boi