NA_TURBO Member 532 Member For: 10y 11m 14d Gender: Male Location: Mildura Posted 27/11/19 10:03 AM 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.
Locko90 Member 32 Member For: 7y 5m 16d Posted 01/12/19 10:14 AM Author 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.
NA_TURBO Member 532 Member For: 10y 11m 14d Gender: Male Location: Mildura Posted 01/12/19 10:29 AM 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.
Locko90 Member 32 Member For: 7y 5m 16d Posted 01/12/19 01:14 PM Author 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.
arronm Dropping a turd Legacy Donating Member 9,520 Member For: 18y 10m 26d Gender: Male Location: Perth Posted 01/12/19 02:50 PM 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
Locko90 Member 32 Member For: 7y 5m 16d Posted 01/12/19 10:21 PM Author 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.
Locko90 Member 32 Member For: 7y 5m 16d Posted 07/12/19 12:11 AM Author 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?
k31th less WHY; more WOT Site Developer 30,104 Member For: 18y 5m 12d Gender: Male Location: Melbourne Posted 07/12/19 12:15 AM 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
Locko90 Member 32 Member For: 7y 5m 16d Posted 07/12/19 01:32 AM Author 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
k31th less WHY; more WOT Site Developer 30,104 Member For: 18y 5m 12d Gender: Male Location: Melbourne Posted 07/12/19 01:34 AM 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.
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