too much boost = engine cutout
 

alright , d16z6, t25 custom turbo setup hf mani etc.
when i push 5+ lbs of boost the engine cuts out, like it has hit fuelcutout or something when only at 5k and im WOT,

already checked the map sensor, swapped it w/ my friends who is running 8lbs daily on his b18b, not the map sensor cuz it still did it then.

He told me it may be the spark plug gap, i gapped them at .030 or 30 whatever, thbat could have changed though, and they are 1 step colder cuz i was running n02, and timing is retarded 2 - 4 degrees.

anyone gimme some help on why this is happening, 5lbs just isnt fun, im trying to push 8 with my FMU, and the FMU is installed properly.

Re:too much boost = engine cutout
 

make sure theres no exhust leakes between the manflod and the adapter.. that ---- happen to me and after i tighten them up it was good

Re:too much boost = engine cutout
 

What ratio FMU? Souns like you might be leaning out.
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Re:too much boost = engine cutout
 

that too... if u run to lean it will cut out

Re:too much boost = engine cutout
 

its a nismo adjustable FMU suposedly a 12:1 disk, its the same one used on one of the turbo projects on the main page.

the manifold and adapter are all good no leaks there

Re:too much boost = engine cutout
 

If it's adjustable, try to richen it up a bit.

Any smoke?
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Re:too much boost = engine cutout
 

It has a little threaded vacuum nipple and if you tighen it it yeah you know, but ih ave it all the way loosened, and yeah it puts out a shitload of smoke, the seals on the turbo are leakin i guess or something.

Re:too much boost = engine cutout
 

well is tighter richer?...

Re:too much boost = engine cutout
 

lol really? it closes the hole tightening it? lol lemme go test drive it and get back to you guys :-X

Re:too much boost = engine cutout
 

youre running an adjustable fmu without a fuel pressure gauge?...dont go try it cause i said so :-X i take no responsibility

Re:too much boost = engine cutout
 

no fpr... but i have the little needle twisted all the way it and its letting me boost a LITTLE bit higher about 5.5 - 6 what else could there be? it makes no ------ sense dammit!!!@!@#$ >:(

Re:too much boost = engine cutout
 

you do have an upgraded fuel pump right

Re:too much boost = engine cutout
 

yeah walbro 255 intank

Re:too much boost = engine cutout
 

anymore info? bump i want 8 damnit!WSEWE#!@$!@#$

Re:too much boost = engine cutout
 

You need to tune it. From the sounds of it, you might actually be running way too rich. It's hard to say at this point. You really need to find out how to adjust your FMU. Since that is your only means of tuning, it's the only thing left to do. :-\
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Re:too much boost = engine cutout
 

Chip the ECU and use bigger injectors. FMU is not proper fuel management. Oh yeah, get someone who knows what they're doing to tune it. I wouldn't dream of tuning a car without a wideband and/or EGT.

-Michael

Re:too much boost = engine cutout
 

the fmu may be locking up on you and causing you to go lean. that happened to me before. i would hit boost and then it would bog/stutter/cut out cuz it was running super lean

Re:too much boost = engine cutout
 

oh yeah, i dont have a gas cap :-X i lost it a week or so ago. maybe thats not letting the pump build up the pressure it needs :-X :-X :P

Re:too much boost = engine cutout
 

it's happing to me also. My b18b teg is having fuel cuts around 5-6k, that's cuz my stock injectors are maxed out on that shitty fmu. But it's temporarily, untill my s-afc comes in and 450's. I know what you mean when u say the car feels like it's sputtering, it's most likely cause your not getting enough fuel or injectors are maxed. My civic did the same thing untill i went with the Hack.

Re: too much boost = engine cutout
 

LS1 :1

Re: too much boost = engine cutout
 

WTF am I missing here? Is it the perfect time of night to be waking up the dead? :X

Re: too much boost = engine cutout
 

i think he may be recaping the thread since the guest name and his are the same only with a capitol S. makes me wonder if that is his thread from 3 years ago.

Re: too much boost = engine cutout
 

What a noob. :1
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Re: too much boost = engine cutout
 

referenced toward me or is it actually scottsi that we know and love now :-*

Re: too much boost = engine cutout
 

my wastegate actuator is fucked up and doesn't seal so once i hit full boost and the boost controller spring collapse (introducing a boost leak) my car falls on its face. Same thing happened when i blew off the vacuum line to my boost gauge and later blew off the line to my map sensor, car completely cut out for a split second.

Got a boost controller? check for leaks

Re: too much boost = engine cutout
 

are you ------- serious? did you even look at the thread date? or maybe even attempt to ------- READ the whole thread? :1