I installed a new Kc300x turbo a few months ago and I’ve been wondering if with the new boost numbers should I get a boost fooler to get the most out of it? It’ll still go to 28-30 psi in the 3000-3200k rpm ranges which I don’t do much but I’m wondering if I got one if it would spool a Little quicker after 20-22 Psi range if it’s cutting fuel now

 

In the SDs defuel limit is 23-24 psi.
Only purpose of boost fooler is to prevent SES light / protect the MAP sensor from overboost.
If PCM is defueling,you won't see more boost than 23-24psi..?

 

This right here. If you're hitting 30 PSI without a check engine light and loss of power, an OCR isn't going to accomplish much. Like stated, the boost fooler keeps the MAP thinking it's only seeing 22-25 PSI, while the actual number is higher.

 

Oh I gotcha. I’ve been doing some reading on these and anything I found was very unclear as to the difference between ours and the SD. Thanks guys still trying to learn all the electrical functions on these lol

 

Your max boost is 28-30psi with a kc300x drop in?

 

Yeah it is. I think my up pipes are leaking a little so I’ll have to get bellowed uppipes soon to get the most out of it

 

Quick question. I installed new FFD stage 1 injectors yesterday with a 1023 tunes hydra. Today I wanted to test them out and I got to 40 psi of boost and THEN my CEL went on. So my question is why is it coming on then instead of at the 22 psi that’s normal?

 

ICP not keeping up with new sticks..?

 

Not sure. It’s almost brand new like not even a month ago

 

Just a guess, maybe there is a time delay to prevent nuisance CEL’s if you just hit 22 psi for a moment. Maybe you went past 22, triggered the time delay and when you reached 40 psi the time delay coincidentally timed out right then and triggered the CEL? I am not betting anything on this response being correct.

 

That’s possible I suppose. Only thing is I was still pushing 28-30 before and it never sent a code. Maybe it’s just that delayed is that possible?