Correct me if I'm wrong, but doesn't comptechs black box thing only prevent the ECU from seeing boost? I don't believe it does anything for controling timing or fuel.

I don't see how your going to be able to control your A/F or timing with your current setup. Sounds like trouble to me.

Could be wrong though, it happens.

 

But how could this end up being "trouble" if everything I'm monitoring is exactly where it should be

 

Is the 8lbs the lowest your wastegate allows? i would bring it down to 7 maybe if you are using the comptech fuel components... But the only way to really find out is to dyno and see if the a/f ratio is nice and safe. Run the richest setting your fmu allows, If its still lean, i would just wait for the AEM, or get a vfac for the time being and sell it later when you get an aem. (i think you can only go up to +10 points w/out causing a cell w/ the vfac). I've heard that adding fuel w/ the apexi also retards your timing a lil more, so i guess a lil more cushion there... Not the best way to squeeze every HP available, but in my honest opinion i think you would be fine, just gotta make sure your a/f ratio is good... If you're still running lean even at the highest fuel settings, then i guess you should wait. Good luck with the setup though, let us know what she dyno's at.

 

Ok this makes me feel a little better... For the time being I'm not trying to be a dyno queen and squeeze all the HP out of my car... That is later . But if you think I should be at 7psi than that's what I'll do. As long as my A/F is good I really shouldn't have to much to worry about right? And trust me, if it's not I just won't run it. Not worth the risk.

 

Nick you're scaring me. You can tune a sc at 8 lbs using what you're describing, but man, I'd stay way away from trying to run a turbo setup (even at lower boost levels) that way. All the comptech ESM does is hide boost. The FPR is a crude way to increase fuel w/o modifying the injector signal from the ECU. Neither is sufficient IMO for running even a low boost turbo setup.

Can it be done? Sure. Good idea? Well the AEM EMS is a hell of a lot cheaper than a new motor.

My $.02

 

Is this what the conclusion is? Everyone is seeming to think different stuff and I'm confused. Rick, Todd, and Brian all say I'll be fine but than others say be careful? I'm so confused . But I don't see how this could end up being bad if everything checks out ok . If my A/F was all screwed up than I'd understand but what if everything is perfect?

 

Depends if you want to risk your motor I think is what it comes down to. Personally, I can't imagine running a turbo system without any kind of real management -- thats just asking for trouble.

If you want to possibly risk a 5 grand engine and a 4 grand turbo kit go for it, just be aware of it

 

If I were to get an EMS where could I get one the cheapest? Is used a problem? What kind of things do I look for when looking for an EMS?

How I'm seeing this is:
If everything runs good, my A/F is perfect, I have no boost creep, and my other things register ok why would I need an AMS immediatly? Is there something special it does to make it better than if it were already fine?

And what if I play it totally safe with only like 5 or 6psi of boost? Would that make it any better?

 

FMU's usually aren't fast enough to provide enough fuel for a turbo application.

AEM EMS:
https://www.s2ki.com/forums/index.php?showtopic=396907

 

Considering the investment and potential for trouble, I'd get the AEM EMS and go to sleep secure in your knowledge is won't blow up tomorrow(though a bit poorer)... as long as your tuner knows what he's doing anyway...