Re: car falls flat on its face at full boost
 

Indeed. And eShaw, just leave HMT now. It'd be best.

Re: car falls flat on its face at full boost
 

suck my dick, this place is too good to leave.

Re: car falls flat on its face at full boost
 

Then take people's advice and at some point you can contribute info to others. :6

Re: car falls flat on its face at full boost
 

uhh... did you not read my post about not wanting to lower my spark plug gap to .018 because it's probably too low?

Re: car falls flat on its face at full boost
 

If you know more than the combined uncontrollable knowledgabilities contained within HMT, then why the ---- are you here asking questions. ------- hell. I will cut your head off and ---- down your throat

Re: car falls flat on its face at full boost
 

i dont know if you already said this or not cuz i try to just skim the post.. but does it sound like a miss when it falls on its face or is it just flat out going into a limp mode and shutting fuel off?? before my honda i had a v dub and every 4 months i would pretty much bake my upstream 02 sensor because i was running to high of boost and didnt have a good fuel system 24 lbs with stock fuel system and my 02 sensor would fry every 4 months and when it did everytime i would hit full boost under a heavy load-- like you said 3rd and 4th gear at full boost-- it would sound like a bad miss and kinda backfire like fuel cut.. sounded cool as ---- but it would only let me drive normal til i got a new one.
just maybe one more thing to check.
but then again my v dub was smarter than the average tuner so you couldnt ------- bypass ---- like you can on most cars or it would go into limp dick mode and only run 6 psi til you fixed it

just my .02 maybe another place for you to look i dont know much about a focus wit boost

Re: car falls flat on its face at full boost
 

What did you use to tune the car? On factory ford management useing like sct of diablosport there is no boost cut in the pcm. You can kinda build in a boost cut by takeing the cell in the maf transfer funstion that is the highest you get to and then make the next higher one a lowwer value, the pcm goes stupid and shuts off the fuel. But that not the way to do it right. In reality, there really isn't a good boost cut system in the factory ecu as it never was built in. There is a rev limiter obviuosly. If your useing sct or diablo, make a log of the run and post it and we can help you. Who tuned it last? Ask them if you can get the actual cal file from them. That would help too.

Re: car falls flat on its face at full boost
 

Why don't you try running a .018 gap first and then see what the results are. If it goes worse then put the gap back to where it works better.
Like JD said, It looks like you have an exposed spark plug wires or the wires are worn out. Had it happen on a honda once before with my 15 year old spark plug wires, put some other stock wires on and everything was fine.

Re: car falls flat on its face at full boost
 

most boosted hondas run .025" gap too. mine doesnt though. it likes .018"

plug gap doesnt care what brand of car you have, but more on the conditions inside the cylinder.

try a step colder on your plugs too.

Re: car falls flat on its face at full boost
 

simmer down there chief. pay attention to what i post. i basically stated that fords and hondas are two completely different machines and that what works for a honda might not be safe/work for a ford. my tuner, who basically wrote the book on tuning foci, said not to go below .025. so i will not go to .018 no matter how many honda owners think they know whats best for my ford.