Boost Issues

[shibby69]

hey hey

i got a hdi electronic boost controller with a boost guage n had it installed, after that was having issues with misfire and other things.

i then wired it up so i bypassed the boost controllers solenoid i thought this would run stock boost but now its running 12.5 which is way too high considering its on lowest setting.

any idea as to why its running so high?

[hypergear]

Run straight from boost source to actuator. should get 7psi. If it doesn't work. it either means your wastegate is jamed or leaking actautor diaphragm

[JonnoHR31]

car says 32. if its a rb20 then the stock actuator is 10psi, might get a touch more if you have a bigger exhaust etc. as stao said, try running a boost source directly to the actuator

[shibby69]

thanks guys yeh runnin full exaust and fmic but that shouldnt see it newhere near 12 should it?

am i doin ne damage driving around at 12 psi or will the engine start leaning out

[Harey]

In the thread below SKYPER says that he has tested a few R32 wastegate actuators and they were higher then 10psi, they varied around 12psi.

http://www.skylinesaustralia.com/forums/Rb...-U-t312106.html

Plus a full exhaust so 12.5psi sounds ok. As Hypergear said remove the boost controller from the system and see what just the wastgate actuator runs at.

[shibby69]

In the thread below SKYPER says that he has tested a few R32 wastegate actuators and they were higher then 10psi, they varied around 12psi.

http://www.skylinesaustralia.com/forums/Rb...-U-t312106.html

Plus a full exhaust so 12.5psi sounds ok. As Hypergear said remove the boost controller from the system and see what just the wastgate actuator runs at.

thanks mate that gives me a bit of relief haha, thought i bought i dodgy boost controller, wasted 350 bucks.

ill run it the actuautor and see what happens, thanks guys

[shibby69]

well i got my spark plugs changed and the car is running well when im not using the boost controllers solenoid, still around 12 but i can deal with that for now. as soon as i put the vacuum hoses to go through the ebc's solenoid and take it for a drive the boost shot up to like 16 psi and was going to keep going untill i took my foot off the accelerator.

im 99% sure its wired up correctly, the ebc is a hdi sbc d or something, the one that comes with the really bright boost gauge, also if the key is turned on the acc should the boost guage be reading a number? if so what number, thanks

[Harey]

Good work. So as you have probably worked out the wastegate actuator on your car operates at 12psi. This is a minimum boost pressure so you cant go below it.

When you introduce the boost solenoid it spikes to 16psi and above, so your boost controller is not setup correctly.

Sorry I cant help with that specific boost controller.

[shibby69]

haha thanks, i was told it was 10 by a few people so i was a bit confused

ive tried everyway the boost controller can be set up, looks like ill have to spend some more time trying to figure it out, serves me right for not going for the profec

Good work. So as you have probably worked out the wastegate actuator on your car operates at 12psi. This is a minimum boost pressure so you cant go below it.

When you introduce the boost solenoid it spikes to 16psi and above, so your boost controller is not setup correctly.

Sorry I cant help with that specific boost controller.