Unofficial HKS EVC VI thread.
I was going to use this until I found out that I couldnt go past 36psi. I am honestly a bit surprised that HKS's top of the line boost controller cant hold more. I would assume a company like HKS would have one that could hold up to 50 or so. Im planning to push 42-43 and am now having to scramble to find another one. Anyone ever attempted more than 36psi with the EVC?
Thanks for the nice words about my setup guide. I did spend a lot of time getting things working perfectly. HKS told me that it wouldnt work, but I knew it would, so I went about it on my own. I spent alot of time figuring it out and then writing up the procedure so any person could figure it out. I am glad I succeeded in making an easy to follow manual.
In my opinion you can not get the boost to come on measurably faster with adding boost pressure down low on the boost map. If you actually see how the stepper motor is working it completely shuts off flow to the wastegate until a certain boost pressure is seen. This boost pressure is a function of the set boost pressure. If you notice with the EVC and any other EBC the part throttle response is real jumpy, because boost comes on too quickly. If I were to use the throttle input into the system, I would use it to pull back boost at lower TPS values to minimize this jumpiness and make the car smoother to drive part throttle. Then in the upper RPMs let it run normal.
Mike, so with the setup manual, did you get the boost to hold rock solid at 22 psi to 7500 RPM?
Thanks,
Brian
In my opinion you can not get the boost to come on measurably faster with adding boost pressure down low on the boost map. If you actually see how the stepper motor is working it completely shuts off flow to the wastegate until a certain boost pressure is seen. This boost pressure is a function of the set boost pressure. If you notice with the EVC and any other EBC the part throttle response is real jumpy, because boost comes on too quickly. If I were to use the throttle input into the system, I would use it to pull back boost at lower TPS values to minimize this jumpiness and make the car smoother to drive part throttle. Then in the upper RPMs let it run normal.
Mike, so with the setup manual, did you get the boost to hold rock solid at 22 psi to 7500 RPM?
Thanks,
Brian
I'm tapering to about 20.5psi right now. Now I had to set the controller up quick cause of deadlines before tuning but like I said 20 min and she started at 22psi tapering to 20.5psi. I plan to experiment with the easy writer software and see if I can dial it in more. Thanks man! Have you experimented anymore with it since the setup guide?
Mike
Just got off the dyno at USP/AWD motorsports lastnight. I was able to hold 25 psi pretty steady. Made 411 hp and 365 torque(dynojet) on the Green. 4th gear pull shows about 25 psi at 3250 rpm and holds in to about 7100. I added 1 psi of at 6000 and 7000 rpms.
Mike
Brian,
I'm tapering to about 20.5psi right now. Now I had to set the controller up quick cause of deadlines before tuning but like I said 20 min and she started at 22psi tapering to 20.5psi. I plan to experiment with the easy writer software and see if I can dial it in more. Thanks man! Have you experimented anymore with it since the setup guide?
Mike
I'm tapering to about 20.5psi right now. Now I had to set the controller up quick cause of deadlines before tuning but like I said 20 min and she started at 22psi tapering to 20.5psi. I plan to experiment with the easy writer software and see if I can dial it in more. Thanks man! Have you experimented anymore with it since the setup guide?
Mike
I havent experimented anymore since the setup guide. I got it working do exactly what I wanted it to do, and havent done any more experimenting. I may plan on trying to work on some partial throttle desensitizing when I have some time. The boost comes in too fast during part throttle stuff, and makes the car jumpy IMO.
If you still cant get it to hold 22 psi, PM me your phone number and I will help you fix it so it will.
Brian
If you have an intake you should be able to at least hold 22 psi at 7500 RPM with the boost really turned up from 6500 RPM up.
I havent experimented anymore since the setup guide. I got it working do exactly what I wanted it to do, and havent done any more experimenting. I may plan on trying to work on some partial throttle desensitizing when I have some time. The boost comes in too fast during part throttle stuff, and makes the car jumpy IMO.
If you still cant get it to hold 22 psi, PM me your phone number and I will help you fix it so it will.
Brian
I havent experimented anymore since the setup guide. I got it working do exactly what I wanted it to do, and havent done any more experimenting. I may plan on trying to work on some partial throttle desensitizing when I have some time. The boost comes in too fast during part throttle stuff, and makes the car jumpy IMO.
If you still cant get it to hold 22 psi, PM me your phone number and I will help you fix it so it will.
Brian
