I know that there have been post about this in the past, but this is my continuing effort to get information in the site for the search mode.

After reading a post from Dr. EVO, I went back to the drawing board on my settings to achieve boost consistancy. Here is what I have come up with.

The settings are based on 93 octane pump gas. The temperature outside is around 78 to 88 degrees. The settings are based on the consistancy between 4000rpms to 7000rpms. The boost will increase and fluctuate between 0 and 4000rpms as boost bills up, but never go over the peak boost psi in that particular gear. The boost settles to a constant rate at 4000rpm.

Low Setting

1st gear 11.5-11.9 psi

2nd gear 11.7-11.8 psi

3rd gear 11.7-11.8 psi

4th gear 12.1-12.2 psi

5th gear 12.5 psi

High Setting

1st gear 17.3-17.5psi

2nd gear 17.6-17.8psi

3rd gear 17.6-17.8psi

4th gear 18.3-18-5psi

5th gear 19.0-19.1


The consistancy is very constant in the given gears. The boost pressure is different by 1 psi in the low setting between 1st and 5th and 1.8psi int the high setting between 1st and 5th.


The low Settings
Set 20%
Gain 3%
Start boost 16%
Waring limiter 13.5psi
Limiter % 50

The High Settings
Set 41%
Gain 4%
Start Boost 36%
Warning Limiter 19.5psi
Limiter % 99

One could get the boost level in third and fouth gear to a fairly constant 19.0psi if you are willing to run 20 to 21 in fifth gear. I am not willing to risk that high of a psi at this time in fifth. I do a lot of highway driving in fifth. I may in the future, but not now. These setting may not work for you, there are many weather,car,instalation, and unit differences. This is just what is working at this point in time.

What have you found to be functional Greddy profec b spec II settings in your EVO?

 

Has anyone found english instructions for it yet?

 

The second half of the booklet that came with mine was in English.

 

What he said.

 

I think you might have got the gain set way to low, mine makes very consistant boost 1.30-1.25 bar (around 19-18 PSI) in low, and 1.4-1.35 bar (20-19PSI) in high, at all RPMS and every gear.
Your indicated settings do not match the actual control value names so it's kind of hard to tell with the info you provided.
There was already a thread about settings on this EBC a few weeks ago.

Mods are turbo back 3" (RMR) with high flow cat, K&N stock filter, Greddy type S DV, and Under drive pulley.

Here is what I use:

low setting (1.3 -1.25 bar)

SET (duty cycle knob setting) = 49%
GAIN = 18
START BOOST = 1.23
WARNING = 1.37
LIMITER = 46%


High setting (1.4 - 1.35 bar)

SET (duty cycle knob setting) = 53%
GAIN = 19
START BOOST = 1.27
WARNING = 1.47
LIMITER = 49%

The gain setting is critical to maintaining boost in the higher RPM's, if you set it to high it becomes overly sensitive and starts surging/oscilating the boost due to over correction. If you set it lower the boost is very stable but it tappers badly at the higher RPM's. With these settings I do get some minor surging (less than 1PSI) occasionaly, but if you knock it down a couple of points it is completely stable but does taper about 2 PSI in the upper RPM. You want to get the start boost as close as possible to your desired boost to get the best response, I found these values work well with little or no over shooting.
Using the warning/limiter values you do not have to worry about your boost overshooting to a dangerous level, but you need to have it high enough or your SET value low enough that you do not keep bouncing off the limiter. That will give you a similiar affect to having the gain to high (oscilating boost). You may need to adjust your SET and GAIN values slightly higher or lower due to variations in component/car tolerances. Several individuals are using settings very close to these with very good results.

Here are some useful pages out of the manual.

 

and

 

I don't know if you read my post titled "intake, BOV, Exhaust, Boost Controller". I gave you props for helping me on the phone. I would like to thank you again for you help on installing the EBC. I could not have done it with out you.

I edited my post so the names match. Thanks for the correction. I have tried the setting that you had, or very similar settings with the gain between 10 and 22 and with different Set values. The problem of surge exist as you have said in your post. I have found with the low gain setting the surge disapears. I would rather had the linear pull in the separate gears with a little different psi between the gears, than the surge and constant psi peak in the gears. Can you tell the surge bothers me. I may try to increase the gain value up a little to gain psi constancy in the gears.

Now with that said, here is the thinking behind my belief. If I increase the warning limiter than I will not bump into it as the psi spikes a little with a higher gain value. My question is how much psi can the engine hold and for how long. I figure if I don't go over 19.to 19.5 it can hurt the longevity of the engine. This is why I have set my EBC to these values. I would invite your opinion on this matter. You seem to be a quite bit more educated on the matter than me. Thanks again for your help. You are the man!!

 

I guess I didn't read your post carefully, I thought you were unhappy with your boost. Looking more closely at your boost values they look pretty good, I just wonder how the response is? Is that start boost value .36 bar?
I will give your settings a try, and compare the logging data. I did notice my boost went higher especially 4th/5th on a really cool night recently.
Safe margin is a relative term, obviously the higher the boost/power the more potential for trouble. I have seen people running over 22 PSI with an AFC leaning out the fuel, driving hard on a road course, in the middle of the TX summer 100+ temps, so....
With the ultra rich stock fuel maps, conservative timing and the aggressive built in knock retard, I think you can easily run 19-20PSI even with a little over shoot now and then. This depends on your gas quality of course, in my area it seems to be better than most, so you really need to data log to see what your car is doing. My car runs 19-20 PSI and sees a lot of extremely hard road course duty (IMO the most severe engine/car use possible), it has 15K milage, and still running stronger than ever.
This engine and the car in general seems to be extremely durable, I drive it hard every chance I get, plus it has at least 8-9 hours of track time. So far it has just needed tirse and brake pads. I also change the oil as soon as it starts to get dirty, depending on use that can be every 1500-2000 miles or less.

I didn't see your other post but thanks for the props, glad I was able to help.

Kind regards,

Eric

 

Well, since the post I have tried to tweak it a little more because of your thoughts. The values on the high setting are now 45% and a gain value of 10. This has allowed 3rd and 4th gear to have a psi consistancy of between 19.0 and 19.2 from 4000rpm to 7000rpm. Fifth gear as I suspected is between 19.5 and 19.8. That is a little high for me, but how often to you WOT 5th around town, not that much. So I raised the limiter to 20.5 and have not run into it yet. When I raised the gain over 10 the surge would rear its ugly head. I tried to reduce the set value and increase the gain and Visa Versa, still some surge. It seems on my car these are the value limits for linear boost for 19 psi in 3rd and 4th without any surge. I drove back from charleston SC on the highway for 2 1/2 hours and played with BC all the way home. I think I am done setting for a while, I am just going to drive it. That is until, the Apexi SAFC II arrives at my house this Tuesday. One more thing to tweak.