Why Am I Boosting At a Bar? Need help

M

Monty

Member +
I just bought a glanza there on friday and the blitz boost gauge it came with is showing that i am boosting at just a tad over 1 Bar. I thought it may have been a faulty reading so i hooked up my toms gauge and to my surprise it still showed that i was boosting at a bar. Now i cant see any FPR, and there isnt even an HKS actuator on it so i am confused. The engine management light doesnt come on and i am not hitting fuel cut at 0.85bar. However when i am on full boost at like 5000rpm it seems as if its hitting some type of fuel cut, like its hesitating slightly. The mods on it are a 5zigen exhaust, blitz induction kit and as for power wise mods that it. It still has a catalyser.

Now the pipe that comes from the actuator onto the turbo? Well it has 3 tie wraps round it, it looks as if they have been put on to restrict that pipe?

I am worried that i am doing engine damage as i dont think there is any type of fuel management. Any ideas?

Thanks, M

HERE IS A PICTURE OF THE ACTUATOR ETC. NOTICE ON THE BLUE PIPE COMING OFF THE ACTUATOR IT HAS TIE WRAPS AROUND IT WHICH IN TURN IS RESTRICTING THE PIPE. ANY IDEAS?

Image039.jpg
 
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supernova

supernova

Member +
Well it does seem like your hitting fuel cut and thats not good for the engine! it seems like the hoses to you actuator maybe wrong or something, maybe get a pic?
 
A

Adam_Glanza

Member +
wat sort of ecu do you have? that may explain the reason for running more boost and not hitting fuel cut.

a jam / blitz ecu etc can fuel for 1 bar boost easily.

and you might be getting creep due to those pipes!

get it checked tho asap mate
 
sx_turbo

sx_turbo

Lifer
get some pics.

but chances are, and is quite common on starlet imports.

you have an uprated actuator, and an FCD or something, chances are you dont have any fuelling mods, and also probably dont have an uprated manifold.

get the fuelling sorted and a new manifold and all should be well.

also did you not check what boost it was running before you bought it?
 
sx_turbo

sx_turbo

Lifer
yup you have a JAM or TOM'S actuator.

look identical to stock but have stronger 1bar springs in.

that bit of hose is nothing to worry about, its just a blue pipe.

check for an uprated ecu.

if not then either change the actuator for a stock one, or spend money on the ammount of mods that you will need to do.
 
M

Monty

Member +
sx_turbo said:
yup you have a JAM or TOM'S actuator.

look identical to stock but have stronger 1bar springs in.

that bit of hose is nothing to worry about, its just a blue pipe.

check for an uprated ecu.

if not then either change the actuator for a stock one, or spend money on the ammount of mods that you will need to do.
Click to expand...

Right lads, i checked the ECU and i am no expert but it seems to have been modified in some way. The ECU has toyota on it but it looks like it has been opened up because there is extra wiring coming from it and it has been taped up and stuff. Any ideas on that? Also why would the pipe on the actuator have the tie wraps round it to restrict it?
 
Rory

Rory

Lifer
Try and get pics up of the ECU.

Also, take the tie wraps off, if that pipe is closed of, you will start running higher boost levels. If my thinking is correct.
Take them off, and see what happens.
 
P

patglanza96speedy

Member +
mate i put hks act on mine it only has one pipe so i pit it to the turbo so theirs no hi or lpw mate take out your glove box see if u any piggy back on your ecu if u dont see if your act can adjust mate
 
sx_turbo

sx_turbo

Lifer
Monty said:
Right lads, i checked the ECU and i am no expert but it seems to have been modified in some way. The ECU has toyota on it but it looks like it has been opened up because there is extra wiring coming from it and it has been taped up and stuff. Any ideas on that? Also why would the pipe on the actuator have the tie wraps round it to restrict it?
Click to expand...

right it sounds like the car did have an FCD and it has now been taken out.

the tie wraps on the actuator are only there as there is a join in the hose. the wraps mean nothing.
 
M

Monty

Member +
Rory said:
Try and get pics up of the ECU.

Also, take the tie wraps off, if that pipe is closed of, you will start running higher boost levels. If my thinking is correct.
Take them off, and see what happens.
Click to expand...

Can anyone confirm that the restriction on the pipe caused by the tie wraps will affect boost pressure?
 
sx_turbo

sx_turbo

Lifer
take the tie wraps off and put a new piece of pipe on.

this will confirm your question.

but i beleive that the wraps are not restricting anything.
 
Rory

Rory

Lifer
Yes the tie wraps will be affecting boost preasures.

Come to think of it, if theres a restriction then your preasure will drop. Not rise.
Im going along the lines of my Turbosmart boost T, when i screw it right down, i cant boost anything positive.
Ignore my previous thought.

As SX said, take the tie wraps off and see what happens. Your standard fuel cut will prevent damage to your engine.
 
M

Monty

Member +
Rory said:
Yes the tie wraps will be affecting boost preasures.

Come to think of it, if theres a restriction then your preasure will drop. Not rise.
Im going along the lines of my Turbosmart boost T, when i screw it right down, i cant boost anything positive.
Ignore my previous thought.

As SX said, take the tie wraps off and see what happens. Your standard fuel cut will prevent damage to your engine.
Click to expand...

I'll take em off and see, thats the thing though the engine management light doesnt come on and i'm boosting at slightly over a BAR. There must be some type of fuel cut defender in there or the ECU has been played with. I thought the restriction would cause the boost to rise as the pressure goign into the actuator is lower because of the restriction so the actuator wouldn't push the arm along as soon so the wastgeate would remain closed and the boost would increase?

Who knows man, this is a difficult thing i think. i am going to remove the pipes and if it solves it then fine. I beleive the car is fueling for a BAR. I am boosting at like 1.1bar due to colder weather and stuff. When i am boosting at over a BAR i aint hitting fuel cut but it is hesitating and jerking ever so slightly and i can hear the exhaust note changing. There is some fuel deprivation there at least. I need to bring the boost down to 0.9bar or something. How can i do this, by buying a turbosmart bleed valve?
 
Rory

Rory

Lifer
You try the Turbosmart Boost T, but i would want to know why its running a bar to start with. Also, if the actuator is set for 1 bar, then you cant lower the boost with the Boost T

Have you taken the ECU out to have a look?

Possibly a Jam actuator with a Jam ECU?
The Jam actuators are set for 1 bar.......

I wondered how Aaron's Gt run at 1 bar, until he found a jam ECU in there.
You never know, you could be the same.
 
sx_turbo

sx_turbo

Lifer
look at the ecu.

you should be able to find wires spliced and this would point to having an fcd fitted.

you may be lucky and have an aftermarket ecu in there.

JAM and TOM'S actuators look identical to stock, and the only tell tale signs of them not being stock is that they run at 1bar
 
gavgts

gavgts

Member +
sx thats exactly the same as my ar then cos thts running just over a bar my ecu has toyota all over it
 
sx_turbo

sx_turbo

Lifer
gavgts said:
sx thats exactly the same as my ar then cos thts running just over a bar my ecu has toyota all over it
Click to expand...

yes but you've also got a jam fcd :)

its that tiny little black cube, that has jam sport written on it you showed me. thats stopping you from hitting fuel cut.
 
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