NA_TURBO Member 532 Member For: 9y 1m 23d Gender: Male Location: Mildura Posted 27/11/19 10:03 AM Share Posted 27/11/19 10:03 AM Camo is correct, removing exhaust restrictions will allow the turbo to boost easier and hit boost cut. It's needs a tune, the factory ECU can't adjust for mods and the ba engines are fragile. Actuator and solenoid are the other problems that can cause those symptoms without the exhaust modification.The ECU uses 2 MAP sensors, one in the intercooler piping under the battery and one in the manifold. Injectors are easy enough to replace, but you can't change them for bigger ones without a tune. Link to comment Share on other sites More sharing options...
Locko90 Member 32 Member For: 5y 7m 25d Posted 01/12/19 10:14 AM Author Share Posted 01/12/19 10:14 AM Also I should have mention that I can hit rev limiter in first and second if I launch it and it won't hit boost cut.It only hits it boost cut once it gets to like 3500 - 4000 rpm in 3rd. Link to comment Share on other sites More sharing options...
NA_TURBO Member 532 Member For: 9y 1m 23d Gender: Male Location: Mildura Posted 01/12/19 10:29 AM Share Posted 01/12/19 10:29 AM Do you have a boost gauge? What boost is it hitting in 1st and 2nd? The vehicle is under more load and can produce more boost under more load. Link to comment Share on other sites More sharing options...
Locko90 Member 32 Member For: 5y 7m 25d Posted 01/12/19 01:14 PM Author Share Posted 01/12/19 01:14 PM Yeah I've got a boost gauge, not really sure what it's hitting in 1st and 2nd, keeping my eyes on the road.I'll have to get the misses to watch it. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 1m 4d Gender: Male Location: Perth Posted 01/12/19 02:50 PM Share Posted 01/12/19 02:50 PM Yep, Gauges are useless if they dont warn or have peak recall. Whats the chance you will be looking at the oil pressure gauge when the oil pump dies. ??? 1 Link to comment Share on other sites More sharing options...
Locko90 Member 32 Member For: 5y 7m 25d Posted 01/12/19 10:21 PM Author Share Posted 01/12/19 10:21 PM Do you have a boost gauge? What boost is it hitting in 1st and 2nd? The vehicle is under more load and can produce more boost under more load.So I guessing that in 1st and 2nd it's probably not building any more boost then 10psi, allowing it to rev out and not cut, I'll have to check it today. Link to comment Share on other sites More sharing options...
Locko90 Member 32 Member For: 5y 7m 25d Posted 07/12/19 12:11 AM Author Share Posted 07/12/19 12:11 AM So yeah took the car for a drive the other day and I've confirmed it sits at 10psi WOT through first and second but as soon as I shift into third and plant it, it wants to sit on 12psi then it cuts. could I possibly by pass the boost solenoid and stop the ecu boost cut? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,004 Member For: 16y 7m 21d Gender: Male Location: Melbourne Posted 07/12/19 12:15 AM Share Posted 07/12/19 12:15 AM yes, that should limit the boost to what the actuator is rated to and get there as slowly as the turbo can build the boost, so that'll bypass the tune's boost control and allow you to diagnose it mechanically instead of electronically, in the first instance. 1 Link to comment Share on other sites More sharing options...
Locko90 Member 32 Member For: 5y 7m 25d Posted 07/12/19 01:32 AM Author Share Posted 07/12/19 01:32 AM Okay well I'll give it a go on bypassing the boost solinoid and try just it on waste gate pressure Should I unplug the boost solinoid or leave it plugged in? I'll just run a hose from the turbo directly to the boost actuator Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,004 Member For: 16y 7m 21d Gender: Male Location: Melbourne Posted 07/12/19 01:34 AM Share Posted 07/12/19 01:34 AM just leave it plugged in. yep, from the front of hte turbo to the actuator is the bypass methodology. Link to comment Share on other sites More sharing options...
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