eboooo

Help needed please
this is my first ever post be easy with me
thacar has come to me not running plug leads on rong timing out all sorts wrong. Got t to run ok
wired in a sec monitor
2wd cosworth boost issue won't boost over 10 psi
it's running L6S1-F8F2 Ecu chip ( no idea what it is or where it's from )
can't find any air leaks
waste gate actuator new (also locked it solid so it doesn't move still won't boost over 10psi)
deleted amal valve
deleted dump valve
new plugs gapped .6 and .8 tried both tried both types of plug Ngk BKR9EIX and BCR8ES
fuel pressure adjustable reg/gauge fitted running 2.5 bar

oldford

Your fuel pressure is low when compared to the standard pressure.
Standard pressure is 3.5 bar (without vacuüm hose) or around 3.0 bar at idle with the hose attached.

Don't know what chip this is, but I am assuming you have the standard injectors?
Then your fuel pressure is definitely too low.

eboooo

I have no idea what chip it is apart from that code L6S1-F8F2
thats the only thing on it it's running yellow injectors

Loomer

You need to take the car to a pro rather than guessing,

The chip numbers you have given are just prom numbers, nothing to do with the data on it. How can you try to tune the car or know if it is safe to "boost over 10psi" without knowing what the chip is calibrated for?

If its a std chip and you wind the boost up you WILL loose the engine, so i wouldn't go any further.

And yes the fuel pressure at 2.5 bar is way low. Another engine failure in the waiting.

Turbosystems

iTrader: (5)

L6S1-F8F2
L6 = 2wd ecu
S1 = stage 1
F8F2 = checksum

eboooo

It has run on all this before hand till some one pissed about with it

t230

try it , but dont go mad, with nothing connected to actuator or turbo to boost control ....

drive it and if u get more than 10 psi then u can look at actuator or boost control....

if you dont get more than 10 psi then actuator is only set to max 10 psi

alot of people wont agree with driving without anything connected to actuator etc but its the only way u can test it unless u take it to a pro

eboooo

Yea I have done I've shut the waste gate totally
locked it shut removed pipe and it still won't boost over 10psi
it should boost till it blows up if held or hits boost cut but obviously I would back off before that happened

cossynut2

Agree with you , a sure fire way to melt a piston is to over boost a standard set up. That is what the previous owner did to my 2wd Saff when I first bought it and ruined the engine.

Turbosystems

iTrader: (5)

A standard chip has a 9 psi boost limit you are more likely to damage an engine with a stage 1 chip which has no boost limit a standard map sensor and standard injectors

stevieturbo

So this tells you that you either have a huge leak somewhere...blockage somewhere, or the turbo is knackered.

History. Has it ever ran correctly, what lead to the problem ? Does it run or sound any different ? You say it makes 10psi, and only 10psi...does it spool as it should to this figure ?

More details, intake system, exhaust ?