Serangan Member 103 Member For: 10y 6m 28d Gender: Male Location: Hobart, Tasmania Posted 16/01/15 09:38 AM Share Posted 16/01/15 09:38 AM Hi Guys, I need of a bit of help here.First up, car is tune for this actuator.Actuator is a Turbo Smart IWG75 with a 12 pound spring.Was running at 15 psi of boost for a few months, then it's started boost cutting at 20+ psi. In an attempt to find out what is wrong, I tried bypassing the stock electronic boost controller and expected to see roughly 12psi of boost but I didn't, it kept boosting till the gauge hit 20psi and then the ecu cut in and went into a limp mode.Skipping forward. Today I took the turbo out to see what if the waste gate actuator is at fault.Turns out I can't move it by hand, not sure if this is normal or not? When I connect a hand pump to it, it moves.Following this I connected it to a bike pump and set the pressure to 5psi, actuator moved.Tried again at 12psi moved further but wasn't fully extended.Kept upping the pressure up by 2psi until it reached the max extent, turned out to max out at 22psi. Is this normal? Shouldn't it be fully extended by 12psi?Thanks Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 15y 10m 20d Gender: Male Location: Adelaide Posted 16/01/15 09:54 AM Share Posted 16/01/15 09:54 AM These actuators are "heavy" and need far less pre load than a typical actuator, this is a bit of a skill coupled with D/C to get rightWe got it right, many dont and blame the actuator Yes its "harder" to set up but thems the brakes We ended up steering away from them due to other issues that turbosmart came to the party with but couldn't be arsed dealing with it ever again 2 Link to comment Share on other sites More sharing options...
bamk2f6tornado Bronze Donating Members 777 Member For: 10y 4m 17d Gender: Male Location: Rockhampton Qld Posted 16/01/15 10:00 AM Share Posted 16/01/15 10:00 AM I couldn't move my turbosmart12lbs by hand but got called a soft cock by jet haha. Might have a bit to much preloaded on it. I set my preloaded on mine to hard coz I didn't read the instructions and it was hitting 20lbs way to early for stock bottom end. Tuner backed it off a bit and now runs mint. 2 Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 15y 10m 20d Gender: Male Location: Adelaide Posted 16/01/15 10:02 AM Share Posted 16/01/15 10:02 AM Lol sorry I call many people that hahaha Sounds like your tuner knows what hes doing, who is it Link to comment Share on other sites More sharing options...
bamk2f6tornado Bronze Donating Members 777 Member For: 10y 4m 17d Gender: Male Location: Rockhampton Qld Posted 16/01/15 10:05 AM Share Posted 16/01/15 10:05 AM All good mate. Insane performance in Rockhampton Link to comment Share on other sites More sharing options...
Serangan Member 103 Member For: 10y 6m 28d Gender: Male Location: Hobart, Tasmania Posted 16/01/15 10:08 AM Author Share Posted 16/01/15 10:08 AM Cheers guys. I won't worry about not being able to move it by hand then...I did check the preload while I had it off (still do actually) and it was set on a lot harder than what was suggested on a topic on this site, can't find it anymore. But it suggested having it 3 full turns on. This has reduced the preload now - yes I understand ill need a retune for this.But this unfortunately doesn't explain why it randomly started over boosting Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 18y 6m 28d Gender: Male Location: Perth Posted 16/01/15 10:33 AM Share Posted 16/01/15 10:33 AM Rtfm 1 Link to comment Share on other sites More sharing options...
Serangan Member 103 Member For: 10y 6m 28d Gender: Male Location: Hobart, Tasmania Posted 16/01/15 11:13 AM Author Share Posted 16/01/15 11:13 AM ^^ Ill be sure to tell my tuner this!!turbosmart manual says 2mm preload Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 15y 10m 20d Gender: Male Location: Adelaide Posted 16/01/15 11:30 AM Share Posted 16/01/15 11:30 AM Iam telling u otherwise Link to comment Share on other sites More sharing options...
Serangan Member 103 Member For: 10y 6m 28d Gender: Male Location: Hobart, Tasmania Posted 16/01/15 11:34 AM Author Share Posted 16/01/15 11:34 AM Im merely stating a fact. I've read your tuning thread and do understand that you know what you're doing. But 2mm is a start and is a lot less preload than it originally had Link to comment Share on other sites More sharing options...
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