Basically, what the title says, are you using the stock sileniod controled by ECUFlash, a MBC, or something else??

Also, if using the stock sienoid controled by ECUFlash, how does it work? Does it hold boost well? Did you have to remove one of the pills in the stock line?

 

Still using MBC here.

 

just get an mbc it will be much more accurate. the boost on the ecu is in kpa, but not the real kpa since it calculated off the MAF anyway.

 

Actually mine is set to 20psi and it holds from peak to redline. No boost controller.

 

there is a map sensor connected to the intake so the ecm can see manifold press.
EDIT: that was introduced on the 9

 

MBC


Carlos

 

do you have ECUFlash, carlos??

 

Hi

I'm using Ecuflash to control the stock boost solenoied. I can see the changes in the torque curve from the ECU+, but don't have my MAP hooked up yet. Car is pretty stock.

MB

 

a MBC is certainly not accurate.. But it is easier to set..

I do plan on switching to a GM or Perrin solenoid at some point in the near future once I get the boost maps figured out.. (don't forget to use a resistor with the GM Solenoid so you don't burn out the ECU's solenoid driver!!!!)

There appears to be several boost maps, I'm not sure if their
(Max wastegate Duty, and Desired engine load level) load based or gear based tables.. But it makes sense since you might want different starting duty based on different gears only there are 4 tables and not 5, so there may be other conditions (maybe first and second gear share one table, etc..) But I have not yet figured this out since I"m running an MBC at the moment.

I assume Max duty is the "Starting point" and the Desired engine load level sets the target (From your MAF reading!) In other words, you use the Max Duty to set the rough boost level you need to hit, and the other table to allow it to alter the duty to the level you want (A form of closed loop boost control) but since its based on MAF value, it uses air mass and not boost pressure as your reference, this actually could be a good thing..

 

The 8 has a MAP sensor also, only its only a 1 bar sensor.. Since there is a calibration table, its possible to "Upgrade/sidegrade" to a different sensor if needed.. I could only imagine the calibration nightmare though and of course, its overall usefulness when the MAF sensor is the primary load / VE determining sensor.

 

Using MBC here, set at 17Psi for 20g.

 

EBC old school greddy profec b.

 

I'm trying to use the stock ecu to control the solenoid via a E-Flash from Al. Based on the E-Flash rom image, it should eliminate the tapper, however my before and after logs showed zero change in either max boost or the boost taper. Hits 20.1 psi max and drops down to 16.5 - 17.0 by 7000. This is with the restrictor just before the solenoid removed.

So I either have a leek, a ****ty stock bov, or an improperly adjusted stock wg actiuator. I tried to add a little more pretension to the wg actuator this weekend but have not had a chance to log the results yet. I also replaced all my clamps with t-bolt clamps this weekend.

 

Its possible the boost taper is still the fault of the boost map, sometimes the settings are easily missed..

 

I still use a MBC 27psi all day long