Hello,

I'm new to the forum and I am in need of a AEM V1 map that'll start my evo on FIC2150cc injectors. The car has been running for a long time on FIC1650CC injectors and they have recently died on me. These injectors are old and discontinued so I couldn't replace them, which is why I've decided to upgrade to 2150cc injectors and now obviously they car will not start or run at all with the new injectors. I'm looking to simply start the car and run it out of E85 for the winter.

I've searched the forums and cant find any guide/how to on adjusting maps on AEM V1. This car is on E85 as well. Any help would be appreciated.

 

Just go in and input 2150 injector data and offsets into the the ecu if it was running on 1650's. After inputting 2150 data, it should be close to keep it running. If you don't know how to do that, you've got more research to do or turn the car over to a tuner.

 

I dont have the information to put in and I'm also unsure of exactly what all will need to be modified to accommodate the injectors. This is why I was asking about a how-to or a map that I could upload. I'm not looking for anything more than to start and drive it, no WOT stuff.

 

First thing you need to do is get the injector data flow rate and voltage offset. That is the first step, the car should be close enough to start and run possibly, with that inputted. Nobody is going to have a fuel map that was running on 1650's then put in 2150's without inputting injector data first. You're asking for something nobody is going to have or even do. You might need to visit a tuner if you can't input injector data or even find it.

 

There's nowhere in the AEM v1 to input injector flow data, but you can (and should) input the battery offset values. I'll assume you at least have the AEMPro software installed and know how to navigate around. Before you make ANY changes to the current calibration file in the AEM, save it to your laptop so you have something to revert back to.

Setup > Injectors > Primaries > Batt Offset Primary table > Table

This is where you'll put in the battery offset values. The values I have from an old file that had FIC2150s are as follows:
6v - 1460
7v - 1460
8v - 1460
9v - 1210
10v - 950
11v - 820
12v - 680
13v - 590
14v - 500
15v - 440
16v - 380

Aside from the offset values, you can try to use the 'Change injectors/pressure' option to rescale your fuel map. You'll need to navigate to your main fuel map.

Fuel > Fuel map > Table

Right-click anywhere in the table and select 'Change injectors/pressure'. Then, put in 1650cc/min as the old and 2150cc/min as the new. If you're running stock fuel pressure, then that would be 43PSI. If you haven't figured it out by now, the values in your fuel map will need to be reduced. Commanding the same pulse width value on a 2150cc injector vs a 1650cc injector will result in more fuel from the 2150. If the 'Change injectors/pressure' option didn't work. Revert the fuel map back to the original values, and start decreasing them by a few % at a time. Going from a 1650 to a 2150 is about a 24% increase. Try reducing the fuel map by 10% and see if things improve. If not, try another 10%. You can do so by highlighting the entire table, right-clicking, and selecting 'Percent change'. The software is configured so that a value of 100 makes no change. So, if you want to remove 10%, you would put in 90. If you wanted to remove 20%, put in 80.

 

MasterNater, that's exactly the info I was looking for. Thank you sir, I'll give it a shot when I get a chance. I've already saved the current map as a safety net in case I mess anything up because I've been trying to familiarize myself with the software layout. Outside of those parameters the only other one in question is the latency value, is there a need to change that and if so where might I find that within the V1 software - I havent been able to find it yet.

 

Battery offset is the same as injector latency.

 

Gotcha, I'll give it a shot and hopefully she fires up. Thanks again Nater.