Re: car falls flat on its face at full boost
 

also what kind of wastegate setup are you running? if it is internal then it may have a different setting then the 14b

Re: car falls flat on its face at full boost
 

I don't think the tuner set a boost cut or whatever because the 14b wasn't spooling as fast as it should have (bad wg placement). I fixed the wg placement on this new turbo and I believe now that it's spooling when it should be given that I have a sort of bottle neck with my short section of 1.75" j-pipe. I'm hoping the problem is in the tune cause I'm getting it retuned hopefully next Saturday.

Re: car falls flat on its face at full boost
 

wastegate placement on spooling is a joke. wastegates dont open until you spool :1

Re: car falls flat on its face at full boost
 

boost cut is a saftey setting that is set a little higher then your desired high boost level so that if your wastegate doesnt open for some reason then it will shut your ecu down to protect your engine. when i had a shitty boost controller it would spike up and hit boost cut on my car some times because it was not allowing my wastegate to open at the correct time. btw when this happened it was so fast that my boost guage was chowing me 10 psi and my boost cut wasnt set to kick in till 14 psi so basically my map sensor was getting the reading much faster then my guage and cutting my ecu out. double check with your tuner for sure because when the ecu cuts out its like a sudden loss of all power then as soon as u let off of it everything is back to normal again untill you hit boost cut again.

Re: car falls flat on its face at full boost
 

isn't a 2000 focus returnless fuel system?

Re: car falls flat on its face at full boost
 

Good point. ----, I've had so many little problems with this car that have kept it running exactly how it should be/how I want it to that I can't keep track of what I did to correct what.

Re: car falls flat on its face at full boost
 

I think it is, yeah.

Re: car falls flat on its face at full boost
 

Bringing this back to try to get some answers. I got retuned today and it still died, but this time we figured out it wasn't a "once it hits full boost it dies" thing. It died every time at 5,000 rpms. The turbo spooled up from 3-3.5K rpms to full boost at 7psi around 4-4.5K rpms, and then it acted as if I hit the governor at 5K rpms. I just had a higher capacity fuel pump put in, AFRs and timing are exactly where they should be. What do you guys think the problem could be?

Re: car falls flat on its face at full boost
 

Sensor ground, or ignitor.

Re: car falls flat on its face at full boost
 

Could you be more specific? lol

Also, I just did another test run, and I could take it up past 6K rpms at full boost in 2nd gear, but 3rd and 4th died out around 5K rpms just like before.