Ok i thought i would start a new thread as my recirc thread has become a bit long.

 

Right basically i cant boost past 17-18psi it will hit 17-18psi then drop down to 14 or so..... its not the ebc as ive had the actuator pipes off and it still wont boost past the above pressure. fyi i dont have the stock actuator solenoids anymore.

 

the ebc does make a difference, if set to 0% it will boost a steady 10-11 psi

on 100% of course it will on boost to 17to18psi depending on gear... anyway this is irrelevant seen as ive had the actuator pipes off.

 

i have ditched the recircs hoping they were leaking, I fitted a single Bov which dumps nicely with no leaks.... This has not cured the problem.

 

The car idles nicely so im pretty sure there are no boost leaks(i have tested for these!) these would be pretty obvious if they were the problem. Im going to do another boost leak test 2mow and test it at 18 psi to see what happens.

 

Can anyone suggest any possible causes or tests i could perform to resolve this its getting annoying now and holding me back from my remap......

 

Thanks in advance.....

Edited January 19, 201015 yr by j1mmytt

Just to add, i have fitted hks actuators so im pretty sure they are strong enough to hold 17psi for sure..... unless they have been set to low BUT if they hold base pressure at a steady 10-11 psi surely this eliminates that possibility? sticky actuator stuck open slightly?

 

Could i readjust the actuators in situ? pretty sure the drivers side is not accessible and it would be impossible to adjust both to open at the same time anyway.... wouldn't it? unless on a rolling road of course....

Sounds like the turbo's are maxed out at 18psi.

 

Paul

Sounds like the turbo's are maxed out at 18psi.

 

Paul

 

Definitely not... doesnt matter which turbos they are they should still boost way higher than 18psi, stock turbos can push 20psi not efficiently though of course, more like a very hot hairdryers lol

Not an expert (as you probably know.lol) but it's not something daft like the car running in safety boost is it? Just a thought.

does sound like a sticky actuator mate.

Not an expert (as you probably know.lol) but it's not something daft like the car running in safety boost is it? Just a thought.

 

lol no but thanks.:cowboy: JFYI i have no stock actuator solenoids so the ecu does not play a part in this at all..... its down to something mechanical ie turbos/pipework..... anyway even if i did have stock solenoids i have tested the turbos with the actuator pipes off which should make the tubs spool to their highest.... not a very clever thing to do but it has eliminated the cause of it being the ebc or anything electrical.

Gotta be a leak surely - have you done the leak test dude?

No boost jets right?

The car idles nicely so im pretty sure there are no boost leaks(i have tested for these!) these would be pretty obvious if they were the problem. Im going to do another boost leak test 2mow and test it at 18 psi to see what happens.

 

.....

 

Gotta be a leak surely - have you done the leak test dude?

 

Dont think so....but il be doing another one 2mow....

Det sensor???

Det sensor???

 

lol no you silly bugger...

Just stabbing in order to stimulate your juices - what's the status of your [boost] solenoids???

Just stabbing in order to stimulate your juices - what's the status of your [boost] solenoids???

 

lol they are in the bin :D like i said above ive tested the actuators with the pipes off so it eliminates any possible electronis issue....

 

and here is mine

 

actuator_____________________ebc___________manifold ... done lol

ok ok - just trying to get your brain working - only you know what you have changed/done on the way to where you are now. Often a daft question or a poke in a different direction can stimulate some recall ;-)) It sounds like it's gonna be something silly!!

 

;-)

 

and here is mine

 

actuator_____________________ebc___________ inlet manifold... done lol

OK - do you know for sure the EBC is good?

Crap intercoolers??? If it wont boost past 18psi when there are no actuators involved then there has to be a leak in the system somewhere. You need to wack 30 psi through the system and see what happens. It must leak somewhere, duck tape - fix the leak :D

Is it in 'safe mode' ha ha lol

OK - do you know for sure the EBC is good?

 

its not the ebc or anything electrical like i said above i have had the actuator pipes OFF which means the turbos should spool to their max. this cancels out the ebc solenoids and ANYTHING of that calibre, basically the actuators are completly shut and will not open with the pipes off meaning full and non adjustable turbo pressure.

Crap intercoolers??? If it wont boost past 18psi when there are no actuators involved then there has to be a leak in the system somewhere. You need to wack 30 psi through the system and see what happens. It must leak somewhere, duck tape - fix the leak :D

 

Well I guess we will find out tomoz when Jimmy does another boost leak test :taz:

will find out soon i hope, cant be crap inter coolers i had the stock tubs boost past 17psi once.... boost leak would be too obvious car would run terribly

Have ya got stock IC's matey?

Could it be the timing Jimmy - maybe need to retard a little?