paulr33

the guy just said he wants 200rwkw why on earth would you try and sell a 700HP to him again??????

no its my girlfriend, i was logged in as her and posted it up under her logon by accident. the delete button wasnt there so i just left it. anyone else keen to come out as apposed to sitting on the computer all night? cmon

im jealous

it sounds like you are spot on, silly me assumed it was either MAP or MAF signal and nothing else. can anyone else confirm this is how the load axis of the FC is driven? would like to add to the FAQ and just wanted to clear it up

ok let us know

i posted that on sarahs logon by accident, its me going out

so did yours behave like that from the factory? the stalling and overfueling ? nevermind just re-read it. but i stll dont get why it would fall under emissions the vlt's from factory didnt stall

so on the rb30et factory on the vl turbo that has no bov how does it pass emissions then ? how does it avoid the over fueling? the overfueling is only an issue when its amto vent as the measure air is thrown out the window. in a no bov mode the air still used. i thought ?

load of rubbish

from turbobygarrett again:: What is the difference between a BOV and a Bypass Valve? How do they work, and are they necessary? A Blow Off Valve (BOV) is a valve that is mounted on the intake pipe after the turbo but before the throttle body. A BOV's purpose is to prevent compressor surge. When the throttle valve is closed, the vacuum generated in the intake manifold acts on the actuator to open the valve, venting boost pressure in order to keep the compressor out of surge. Bypass valves are also referred to as compressor bypass valves, anti-surge valves, or recirculating valves. The bypass valve serves the same function as a BOV, but recirculates the vented air back to the compressor inlet, rather than to the atmosphere as with a BOV.

i still to this day believe the factory BOV was included to prevent excessive compressor wear and tear and causing premature failure. i believe it has nothing whatsoever to do with emissions and was never designed for an emissions solution/fix

straight off turbobygarrett: Blow-Off Valves 50mm Compressor Blow-Off Valves Assemblies: The TiAl Blow-Off Valves design is the result of extensive development and testing. The 50mm compressor bypass valve is a vital component of any turbocharged blow-through induction system. This custom TiAl manufactured Blow-Off Valves will improve throttle (time to boost) response as well as help relieve the damaging effects of compressor "surge loading". The CNC machined housings are available in several high luster anodized colors. Note: Blow-Off Valves Assemblies include fitting and V-band clamp.

so how does fitting a BOV from factory provide any changes to the car's setup from an emissions point of view a) no bov factory when the throttle body closes the air reverbs back, chops on the compressor wheel and does a mid air collision. with a larger intercooler core and a pod filter or open mounthed air intake you can hear the LOUD and AUDIBLE compressor chop. with the oem are intake and standard air filter you won't hear the compressor chopping / flutter. the results would be jerky gearchanges, excess stress (or more stress than 0) and the loud flutter / compressor chop if you had a pod filter or open air intake. the car will still drive correctly, have the same exhaust and intake emissions, and run correctly. its only when a misconfigured ATMO bov is used that stalling is induced in the problem so this is ruled out from factory as no factory nissan bov is atmo b) bov on factory when the throttle body closes the air reverbs, hits the valve on the BOV and recircs to the front of the turbo compressor inlet. the air is reused and the system continues to run as normal. there is no excess pressure/foce placed on the compressor from the flutter/chopping i dont believe nissan cared about running "more boost" on factory applications, i dont believe this was a concern nor did the worry about it. why would they ?

private sale

i paulr33 clearly state: the factory BOV or recircluation valve was not fitted for emissions and has nothing whatsoever to do with emissions

no 0.54 is the latest

i dont mind if you share the map, go for it its probably not a good idea, you would be much better off just getting it tuned correctly

if it still fails to idle and nothing in SENSOR SW check is black. does each of the PIMs have voltage? try doing ETC, DATA INIT, YES powering car off and then starting the car and letting it idle does it idle then ?

happy birthday champ

haha nah its all good what u doing tomorrw night

i wont rest till i get a chra # really only for curiosity sake i dont care if they are or arent

how many vlt's you think have suffered compressor failure as a the result of running stupid amounts of boost and not using a BOV and having the loudest flutter known to man

yeah im not sure if it goes backwards, that sounds unlikely but it certainly does collide and really slow the compressor wheel down. this is evident by numerous people reporting more throttle / turbo lag present when not running a bov. most people report that its slower to come on boost when not runing a bov

gary posted it up some time ago, the air travelling in the pipe work is around 800km/h. i could only imagine the reverberation from when the throttle plate closes to be very violent without a bov, hence the loud flutter. yes the plate closes, the air has to go somewhere so it does a uturn and goes boom into the compressor wheel. this places excess stress on the wheel, the bearings and also likely the silicon joiners as they deal with a big mid air collision

actually perhaps compressor surge is not the correct word for it, by definition compressor surge is; when pressure past the compressor outlet is greater than what the compressor can physically supply. ie: seeing 23psi pressure in the manifold and having a turbocharger where its compressor map dictates that in the optimum flow it can achieve ~16psi compression. so perhaps compressor chop or flutter is the right word