Guess a better Q would be: What happens if it is disconnected?

 

If the JP is left open there would be no ignition output to the coils from the ULT


JP8 routs then ignition output through either a 12v circuit or passes it through a voltage reducer to bring it down to 5V

One should use the 5V setting.

 

If you are going to use the ULT's features for speed adjusted maps and/ or the speed/Odometer adjustment for different gears/larger or smaller OD rim/tire packages; the ULT VSS interface must be wired in at the same location where the Yellow box does its thing. Not at the Stock ECU like boomslang or the ULT installation manual states.

This info is unconfirmed at this time but it makes since to integrate the VSS wire this way.

 

deppenma - Are you willing to try the ULT again?

 

I am considering putting it back in.

It is still sitting on the my desk as a paper weight right now since I have not heard back from evasive.

I was not planning on using the VSS options anyways just was passing on that info for any one that might still want to use it.


I just don

 

It was nice talking with you last night .



You want to use the 5v setting . This is only the trigger to the coil and not the output . This is why both settings work . The coils will not like it for long as the extra voltage will create heat and possibly short them out over time .


Add/trim feature only apply's to the Injectors and has nothing to do with the ignition .



I got all the screen shots done . I will try to post everything tonight

 

sorry about that miss information to many projects going on at the same time sometimes the info gets all jumbled up.

I will edit my last post

 

humm just had a thought.

What about leaving JP8 in the 12V position with a separate CD ignition system(MDS or similar) tagged to the factory Molex plugs at the valve cover and run an aftermarket coil and spark plug setup.


Not really require to up grade the ignition system until somewhere around 600hp but may be goods for a few more hp...

 

It will depend on the coil that you would be using . It is only a trigger as I said and not the output for the coil .



To answer some of your other question . Logging timing has no point . If you are tuning on a dyno you log the Knock and set timing accordingly what the final number is irrelevant as you can not use the same timing for someone else .




As far as this goes the Greedy can control fuel for the whole boost range . No need to upgrade the Regulator, till it cannot flow enough fuel through it to support your needs . There is no need to raise fuel pressure when using larger injectors. The AEM regulator is fine if you want to upgrade and only raise fuel pressure 1psi for 1psi of boost. You DO NOT want to use a FMU with a EMS and larger injectors . You will be trying to tune it forever as the two will fight each other . The FMU is the poor mans solution to a EMS and larger injectors you never want to use the 2 together. So you can save some money as far as that goes .


Injector lag time will vary with injector size . I will explain this more later and show you a alternative way to scale your injectors better.



As far as triggering the Water injection , I have not tried to do anything like that on the e-manage . I see why you would want to with the BRP charger if it is non intercooled . If it does have a intercooler there is no need .



No where the hell is my Lunch I need to get back to work .

 

It would only be used as a trigger to the CD system.


Very true
The ULT does not have a knock input but I have seen on another distributors web site that there is a possibility of a knock monitoring data logging coming with a future software update. (future connection through the option ports on the unit.) I think I saw an option in the program for a knock sensor input I will need to look at it again tonight.
Would be nice if it was possible to interface this option port to the factory knock sensor.


[QUOTE] The AEM regulator is fine if you want to upgrade and only raise fuel pressure 1psi for 1psi of boost.