daigo

I'm having spool up issues and can't resolve it.

dand86951

Do you mean that you have it working but the turbo doesn't spool as quick as you would like or it doesn't control the boost at the set point?

daigo

I'm running the VR stage 3, and I'm not hitting 1 bar until 4200 rpm. Most users are getting full boost at 3200. I've checked the exhaust as best as I can and it appears to be the EBC thats the problem.

dand86951

Double check the lines to the solenoid to make sure they are going in the right direction. I believe there is an arrow. Make sure you have the correct lines going to the wastegate. I am assuming you have a dual port wastegate.

I have the tru boost and spool up doesn't seem to be an issue. double check all the lines.

porshhhh951

I am now having the same problem as you. I've checked all my lines. Everything looks fine. My lindsey wastegate has either gone bad or my MBC isn't working correctly. I checked my crossover pipe for cracks and I just don't see anything.

Kinda stinks because im used to seeing full boost at 3k rpms. Now I don't see full boost until more like 4.5k-5k and my peak boost isn't holding right. Its what makes me think the MBC has failed somehow. I've just never heard of that. So even though the wastegate is hooked up properly maybe the acuator has failed or something??

fast951

daigo, I would try a manual boost controller to see if it makes a difference. Your EBC may not be the cause, a collapsed pipe, leaky exhaust or a damaged WG can all cause the problem.

porshhhh951, since you have the V-FLEX, have you considered the VR-EBC. It gives you great flexibility, PC tunable, all sort of adjustments and boost characteristics can be setup. Of course, the WG must be working properly!

dand86951

Have you had the lines to the MBC off recently, or do you have a leak in the boost control lines that you didn't have? Try clamping off the boost controller and then while dragging the brake at 3000 see if you build boost by SLOWLY adding throttle. This can let you know if maybe your wastegate is stuck slightly open.

porshhhh951

I would love to get a VR EBC. I didn't know you had them made and ready to ship yet? I'll email you
Hey thats a neat trick! Turns out I did mess with the wires recently when I completely removed my center console to install my new black one. I went back over the lines today and then re adjusted the boost controller and wadda ya know. It works fine now.

I was making full boost about 3100rpms or so and holding a solid 15psi at redline. Its nice to have a quick car again

daigo

I'm just curious what the other users have their (SPr) setting at?

CurtP

I'm curious too. I'm running a LR Clubgate configured as dual-port and currently have the SPr at 5.0 and DC at 55. I'm getting a constant 13.5 PSI.

daigo

But what rpm are you hitting full boost?

2bridges

hey daigo - your SPr setting is Spring pressure - enter the wastegate spring pressure in psi

daigo

I actually spoke to one of their support folks, he actually called me on friday. The (SPr) setting is actually the point at which the EBC will allow the WG valve to start opening. It apparently has nothing to do with the hard spring that is inside the WG. According to him this is a common misconception. I've been having problems with slow spool-up on what should be a very quick spooling system. I have no doubt it has nothing to do with the turbo itself.

2bridges

vendor documentation (included with the EBC) states and I quote

"Spring Pressure: (SPr)
enter the wastegate spring pressure. The Tru Boost will keep the boost solenoid open from 1psi until boost exceeds the selected value. This value can be adjusted to reduce lead in boost spikes ar reduce spool up time. If the spring pressure is unknown, a conservative starting value of 5 is suggested"

2bridges

I have a thought for you.
why not turn the EBC off, bypass the vacuum lines to ebc and test it with EBC out of the system.
I think you are hung up with the notion it is causing your issues, when there are many more components involved. This will help you isolate. good luck!