- #Mac valve for boost control update
- #Mac valve for boost control manual
- #Mac valve for boost control mac
It's a funny hack job which I did because I had no 90 degree pipe connector so I used a 'T' and blocked one output with a piece of wood However on short notice I can attach a photo of the solenoid install. It's going to be hard to show a photo of the wastegate because it's a bottom mount turbo with internal wastegate and getting to the wastegate is a royal pain. There are 4 markers in the log: first two show runs at 0% WG duty cycle, third is 65% duty cycle making 33kPa and last marker shows 70% overboosting (actually I lifted off the right foot at 180 kPa because I already overboosted too many times in one day.)Īny help is much appreciated, thank you very much! The log file can be copied from the one drive link below and I also attached the map file. What should be the next step? Measuring the WG pressure with different duty cycles to ensure that it is working properly? Easing off on the internal wastegate spring to allow more control? Otherwise the car runs fine and pulls strong when it is making the right boost. I disabled closed loop boost control and all the runs are done in top gear on straight road. In short what I get is very low boost with 65% WG duty cycle and overboosting with 70%.
#Mac valve for boost control mac
After replacing the boost controller with the MAC 3 port I am back to square 1 and I still can't control the boost. Ok, I will place here a log file and hopefully you guys have some idea what's happening because I really don't know what to try next. If you have to much boost on the midrange you just need to adjust the WGDC map, you dont have to run let say 70-90% of WGDC you could run from 0 to 100 if you need it for your needs. I dont know what engine or specs are you running cause with that boost you could have 300hp, on some engines even more. Especially if I step off/on the throttle I get immediate boost cut (set at 1 bar). So on the next tweaking session the plan is to try 100% wastegate DC in the high RPM zone and activate the closed loop boost control in order to keep the overoboost tendency in the low RPM's. So I guess the turbo is quite small and flows well up to 4000 but then it looses its momentum. I get a HUGE immediate overboost when accelerating around 3500-4000RPM even with 70% Wastegate DC. At 90% PWM it looks like I can build around 0.8bar at 6000RPM which is decent for my goals.
#Mac valve for boost control update
Update on my work: I installed the new MAC boost controller and started tweaking it on the street. From then a lot of money flew into the build and I put together a pretty decent setup, however the capability of one of the main blocks (the turbocharger) is still not know to me. I received it from someone I trusted (back then) when I started the build and he said it should be good for aroud 300hp. They also include a DTM connector set, dual sized alloy barbs and a brass filter depending on your desired configuration.You turn the knife where it hurts The problem with my build is that ridiculously I do not know exactly what turbo I am running All I know is that it is a T3/T4 hybrid with 60mm inducer and 50mm outlet size.
#Mac valve for boost control manual
We have chosen the more power-efficient 46 series with a recessed manual operator top opposed to the commonly used 45 series (46A-AA1-JDBA-1BA).Īll valves come with brackets that include rubber sleeved mounting holes to absorb vibrations and ensure the lifespan on the solenoid.
We offer the traditional 3 Port 35 series model 35A-AAA-DDBA-1BA but have varied slightly with the 4port model. We’ve seen enough rusted out seized clones to know otherwise and although infinite boost may seem like an amazing idea with a seized shut solenoid, your motor might think otherwise… buy genuine and support the industry! Unfortunately, due to their popularity, there are a lot of fakes circulating the market for a fraction of the price that “seem” to perform. These valves have been around the automotive industry for quite some time, often rebranded from MAC Valve but the same none the less! They’ve proven to last the test of time and a must for most builds with conventional wastegates. Boost Solenoids! We now stock the popular model 3 & 4 Port MAC Valves to be able to fine-tune the control of your wastegate diaphragms.
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