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i have a fp black ss with a tial msv 38mm external wastegate when i hooked the turbo to the mac boost solenoid with boost off ( gate pressure) it hit 2.2 bars which mean i did the plumbing wrong 🤦 as stated in the picture. i used port 1 and 2 from the WG combined with a T fitting to the turbo port 3 is vented.
i took the solenoid off and then it dropped to my spring pressure of 14 psi spiking 4 psi
how do i do the plumbing of mac solenoid to the turbo and wastegate.
here is pic attached what i uses and car over boosted.
if anyone has a picture of the plumbing it will be very helpful.
hello,
i have a fp black ss with a tial msv 38mm external wastegate set for 14psi springs when i hooked the turbo to the mac boost with boost off ( gate pressure) it hit 2.2 bars which may be coz i did the plumbing wrong 🤦 as stated in the picture. i used port 1 and 2 from the WG combined with a T fitting to the turbo port 3 on the boost solenoid is vented.
i took the solenoid off and then it dropped to my spring pressure of 15 psi spiking 3-4 psi
how do i do the plumbing of mac solenoid to the turbo and tial wastegate.
here is pic attached what i uses and car over boosted.
if anyone has a picture of the plumbing it will be very helpful
Last edited by Evonboost; Jan 13, 2022 at 12:29 PM.
i see so no vent on too atmosphere then, mine a tial and this shows a turbosmart wg but i dont think that makes a difference , that being said did u try pic 2.1? as pic 2.3 says "For obtaining maximum boost pressure on your turbo system"
Last edited by Evonboost; Jan 13, 2022 at 08:10 PM.
Run a boost source directly to the bottom port of the wastegate. Run another boost source (or the same boost source) to the side port of the MAC valve labelled #1. Then run a line from the other side port of the MAC valve labelled #2 to the top port of the wastegate. When the MAC valve is not energized you should have continuity between ports #2 & #3. When the MAC valve is energized you should have continuity between ports #1 & #2. This is the same configuration as the picture you provided. What are you using to control the MAC valve?
Run a boost source directly to the bottom port of the wastegate. Run another boost source (or the same boost source) to the side port of the MAC valve labelled #1. Then run a line from the other side port of the MAC valve labelled #2 to the top port of the wastegate. When the MAC valve is not energized you should have continuity between ports #2 & #3. When the MAC valve is energized you should have continuity between ports #1 & #2. This is the same configuration as the picture you provided. What are you using to control the MAC valve?
hey thanks for the reply
as I said when i tried using this method you suggested with the mac tunes off from my aem ecu and was testing my car on gate pressure the boost went too 2.3 bars when i have only 1 bar spring in the wastegate... I then disconnected the boost solenoid physically and gave the tubro just gate pressure with the boost solenoid out thw picture my boost was quite what I expected from the springs 1 bar spike to 1.4 bar and stayed there, i check the solenoid just to insure it was working and it was clicking normal.
i also got a suggestion too plumb my fp tubro like in the picture but i havented tested this out yet.
with port 1 going on top of the wastegate nipple, port 2 going into the turbo and port 3 bottom nipple of the wastegate.
as I said when i tried using this method you suggested with the mac tunes off from my aem ecu and was testing my car on gate pressure the boost went too 2.3 bars when i have only 1 bar spring in the wastegate... I then disconnected the boost solenoid physically and gave the tubro just gate pressure with the boost solenoid out thw picture my boost was quite what I expected from the springs 1 bar spike to 1.4 bar and stayed there, i check the solenoid just to insure it was working and it was clicking normal.
i also got a suggestion too plumb my fp tubro like in the picture but i havented tested this out yet.
with port 1 going on top of the wastegate nipple, port 2 going into the turbo and port 3 bottom nipple of the wastegate.
what do u think?
This should be very easy to track down the issue since you confirmed it boosts properly without the MAC valve, but please proceed as follows. First, confirm that when the MAC valve is not energized you have continuity between ports #2 & #3. Using a nine volt battery you must energize the MAC valve and confirm you have continuity between ports #1 and #2. Once you verify this then you know the MAC valve is not the cause of the problem. Another way to confirm is hook up the MAC valve per the diagram you provided, but unplug the MAC valve so it has no ability to energize. In this configuration and unplugged it will only boost wastegate pressure. Please do these steps and report back.
This should be very easy to track down the issue since you confirmed it boosts properly without the MAC valve, but please proceed as follows. First, confirm that when the MAC valve is not energized you have continuity between ports #2 & #3. Using a nine volt battery you must energize the MAC valve and confirm you have continuity between ports #1 and #2. Once you verify this then you know the MAC valve is not the cause of the problem. Another way to confirm is hook up the MAC valve per the diagram you provided, but unplug the MAC valve so it has no ability to energize. In this configuration and unplugged it will only boost wastegate pressure. Please do these steps and report back.
isn't it the same as not turning on the mac valve from the ecu? i mean it dont get energized if ecu is telling it too not make boost if it makes any sense.
Jan 13, 2022, 10:10 AM
