boost drop at 4000 rpm
#1
boost drop at 4000 rpm
hy my escort rs turbo mfi have a piper cam mongoose exhaust
and brand new stage 2 turbo
and i have a turbosystem chipped ecu
after a rebuild engine and running it in for the luxembourg MOT i put the turbo pressure very low at the wastgate
then i want to have again more boost
i put the wastegate a little bit shorter that was livered the new stage 2 turbo
i tryed the drive the car well the turbo start charging like at 2800 rpm very pushing
but than it s stopped at 4000 rpm and the rpm fall down ..
like a big stop at 4000 rpm with a strange turbo noise likes it stop or hit a wall
to mutch boost? but i have a turbosystem chip in the ecu...
thanks sorry for my bad english
and brand new stage 2 turbo
and i have a turbosystem chipped ecu
after a rebuild engine and running it in for the luxembourg MOT i put the turbo pressure very low at the wastgate
then i want to have again more boost
i put the wastegate a little bit shorter that was livered the new stage 2 turbo
i tryed the drive the car well the turbo start charging like at 2800 rpm very pushing
but than it s stopped at 4000 rpm and the rpm fall down ..
like a big stop at 4000 rpm with a strange turbo noise likes it stop or hit a wall
to mutch boost? but i have a turbosystem chip in the ecu...
thanks sorry for my bad english
#3
sorry but was is that meaning difficult for me in english to translate can you explain more detailed thanks
all my pipes are samco but the hose from turbo to the meetering unit is roose at a little bit to long but fitts ok after somme cutting
all my pipes are samco but the hose from turbo to the meetering unit is roose at a little bit to long but fitts ok after somme cutting
Last edited by luxembourgrst; 26-06-2013 at 06:55 PM.
#4
they say the the stage 2 turbo is up to 20 psi is it mean when they come delevery they are setup to 20psi and that set it up to mutche boost because i touch the wastgate to make it shorter like 3 -4 turn that it was send brand new to me?
like overboost
like overboost
#6
#7
It is possible as it will have a boost limit either at 18 psi or 23 psi depending on the map we supplied at the time
If you supply me the hand written number on the Turbo systems label I will tell you what to set it to
If you supply me the hand written number on the Turbo systems label I will tell you what to set it to
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#8
#9
ok i just open it there is a sticker on the chip with the number 0782564222 and with a pencil write 79 FD or something and then on the metal over the ship NWT
and there where the vacum hosse come in 14 t
and there where the vacum hosse come in 14 t
#13
well ok is my ecu 18psi (1.24 bar )limited
i push the turbo pressure down at 1.5 -1.6 bar the car goes better but still cutting at 4500 rpm
then push again the power down like 1.3- 1.4 bar it s runn perfekt but only somtimes cutting in the 3 gear full trottle
after some pushing my AFR still red and still on 22.33 for 3 seconde at then very lean and than continue normal driven again fine is this normal ? not enough fuel
my afr at idle is between 14-15
well i need a no limit ecu chip
i push the turbo pressure down at 1.5 -1.6 bar the car goes better but still cutting at 4500 rpm
then push again the power down like 1.3- 1.4 bar it s runn perfekt but only somtimes cutting in the 3 gear full trottle
after some pushing my AFR still red and still on 22.33 for 3 seconde at then very lean and than continue normal driven again fine is this normal ? not enough fuel
my afr at idle is between 14-15
well i need a no limit ecu chip
#17
PassionFords Creator
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From: Blackpool, UK Destination: Rev limiter
well ok is my ecu 18psi (1.24 bar )limited
i push the turbo pressure down at 1.5 -1.6 bar the car goes better but still cutting at 4500 rpm
then push again the power down like 1.3- 1.4 bar it s runn perfekt but only somtimes cutting in the 3 gear full trottle
after some pushing my AFR still red and still on 22.33 for 3 seconde at then very lean and than continue normal driven again fine is this normal ? not enough fuel
my afr at idle is between 14-15
well i need a no limit ecu chip
i push the turbo pressure down at 1.5 -1.6 bar the car goes better but still cutting at 4500 rpm
then push again the power down like 1.3- 1.4 bar it s runn perfekt but only somtimes cutting in the 3 gear full trottle
after some pushing my AFR still red and still on 22.33 for 3 seconde at then very lean and than continue normal driven again fine is this normal ? not enough fuel
my afr at idle is between 14-15
well i need a no limit ecu chip
You are very lucky its so lean as if it was richer you would have holes in your pistons by now!!
Last edited by Stu @ M Developments; 28-06-2013 at 08:19 AM.
#19
setup is priority when upping boost pressure. could be a boost hose collapsing, boost cut as tony has indicated the chip DOES have a boost cut. sometimes a lean engine will miss fire. I would refrain from driving it hard/on boost until its been setup and checked out. going from 8psi to over a bar is a massive jump, mfi cant fuel for both ends of the spectrum. as mine stands it is on the lean side at 10 psi but fuels perfectly at a bar of boost. and tbh a bar is about the most mfi can fuel for. setting up is a bit of a guessing game and only a experienced tuner should really set these cars up
#21
I predict a missing piston crown thread soon
Don't adjust the CO screw only, adjust the fuel pressure screw. Aim for an AFR of 11ish at higher boost levels. You will be rich below max boost.
Don't adjust the CO screw only, adjust the fuel pressure screw. Aim for an AFR of 11ish at higher boost levels. You will be rich below max boost.
#24
no i don t want messy lol and also the engine not
i only want to know wat afr i need on 20 psi boost
or at 18 psi boost
afr on idle and then have to check the afr on boost if its at 11 ?
if not i need more fuel pressure ?
i only want to know wat afr i need on 20 psi boost
or at 18 psi boost
afr on idle and then have to check the afr on boost if its at 11 ?
if not i need more fuel pressure ?
#25
The little black box on the RIGHT hand side of the metering unit (as you look from the front of the car), take it off, turn the 3mm allen key one quater of a turn at a time CLOCKWISE to richen, ANTICLOCKWISE to lean.... You will need a pair of det cans and a WBO2 to set it up properly, adjust the idle mixture screw last.
#26
ok yes i know the black box who is fixed with 2 flat screw i take it off and i only turn one quater clockwise and then refix it ? and then put resetting the co srew at idle on 14 ?
thanks sorry for my english
thanks sorry for my english
#28
The little black box on the RIGHT hand side of the metering unit (as you look from the front of the car), take it off, turn the 3mm allen key one quater of a turn at a time CLOCKWISE to richen, ANTICLOCKWISE to lean.... You will need a pair of det cans and a WBO2 to set it up properly, adjust the idle mixture screw last.
#32
well
hmmhow mutch boost can i have without touching the fuel pressure ?
#36
get a wideband asap mate, innovate ones are spot one then u can see what is going on with the fueling, also put an inline fuel pressure gauage in so if u do tweek it u know what your taking it to
my bad , well he needs to bloody get one asap