tial wg question

[mitsuclipsegsx]

I have a tial 38mm ex wg. i dont have a line on the top of the wg. i have an EBC. In the turbo i just have the 1/8 npt plug in it, wg has a 1bar, i am spiking to ~18, is that because i dont have the line from the turbo to top of wg?

 

[SpoolN]

I have a tial 38mm ex wg. i dont have a line on the top of the wg. i have an EBC. In the turbo i just have the 1/8 npt plug in it, wg has a 1bar, i am spiking to ~18, is that because i dont have the line from the turbo to top of wg?

Im pretty sure when you run an ebc you use both lines. My buddy with his srt-4 had the greddy ebc and he used the top and side lines on the wastegate. For me I'm running the tail wastgate with a one bar spring and I am just using the side of the wastegate and I'm holding right at 14.5. So I think you have to run the ebc using the top and bottom.

 

[andymoraitis]

As mentioned, you'll need the top fitting for the EBC. I'm running with a .9 bar spring (around 11 psi) and I have no spikes or creep with the top fitting not present and the source line connected to the side. I'll be trying a 22 psi setup on Monday and I'll post if there's any spiking or creep with it, but I doubt there will be.

 

[kazzam]

As mentioned, you'll need the top fitting for the EBC. I'm running with a .9 bar spring (around 11 psi) and I have no spikes or creep with the top fitting not present and the source line connected to the side. I'll be trying a 22 psi setup on Monday and I'll post if there's any spiking or creep with it, but I doubt there will be.

so did you try to run at 22psi? How did it work out and what kind of boost behaviour did you have? SPike? creep? please share

 

[Kevin Jewer]

I have run EBCs for years. I have tried the dual port method and never saw one advantage to it, and I don't like the extra plumbing if there is no benefit. I run the side port only. If you are getting spike, and I'm assuming you know the difference between spike and creep, it is because the EBC is not reacting quickly enough to rising boost pressure. Most EBCs will have some adjustability to compensate, a gain knob or similar. Others will have some automatic compensation abilities. With some small fast spooling turbos like the T25 many EBCs (and MBCs for that matter) can not adjust quickly enough to counter the spike and it's just something you have to live with.

 

[wishihadatalon]

I have run EBCs for years. I have tried the dual port method and never saw one advantage to it, and I don't like the extra plumbing if there is no benefit. I run the side port only. If you are getting spike, and I'm assuming you know the difference between spike and creep, it is because the EBC is not reacting quickly enough to rising boost pressure. Most EBCs will have some adjustability to compensate, a gain knob or similar. Others will have some automatic compensation abilities. With some small fast spooling turbos like the T25 many EBCs (and MBCs for that matter) can not adjust quickly enough to counter the spike and it's just something you have to live with.

Isn't the bennefit being able to run a boost source to the top of the hat on a waste gate pushing the piston down. So you can set the solenoid to cross over and send it underneath (side port) and push the valve up. Thus letting you keep the waste gate closed for longer and letting you get a few rpms of spool?

 

[Kevin Jewer]

That's the theory I guess, but I never saw any real world benefit. An EBC isn't going to start opening the gate until you reach set boost, or just early enough to prevent spike. It will have to do the same in either configuration.

 

[wishihadatalon]

That's the theory I guess, but I never saw any real world benefit. An EBC isn't going to start opening the gate until you reach set boost, or just early enough to prevent spike. It will have to do the same in either configuration.

I am not sure if an external is different than and internal but on my friends interal gate/external dump car we could hear the wastegate start to open at very low boost on the t25. Any air creeping by there is air that could be spooling the turbo.

But you have tried it and I agre that it probably wouldn't make a huge or even noticable gains on a larger turbo thatt hits hard.