Restrictor Pill pics - IX Jestrtuning flash *pics*
Guys,
Let me get this Straight, I PREVIOULSY Removed my Air Box and CUT the Tee to Soleniod line and Installed a Tee to my Air Bleeder Valve that I now use to Control (Bleed-Off) my boost, and it works perfect to Increase my boost, It now will go as high as 22-24 Lbs (useing 100 Octane fuel of course) at 3300rpm EXCEPT that my ET remains at 13.09 @ 105(stock IX)for the simple reason that as the RPM's increase, my dam boost DECREASES all the way back to 16-17LBS at 5500-7000...so therefore for Drag Racing my Bleed Valve is USELESS!!!!
NOW though, if i REMOVE this Restrictor Pill at the solenoid youre saying my boost will NO LONGER DECREASE!!!!!!??????????????????
Let me get this Straight, I PREVIOULSY Removed my Air Box and CUT the Tee to Soleniod line and Installed a Tee to my Air Bleeder Valve that I now use to Control (Bleed-Off) my boost, and it works perfect to Increase my boost, It now will go as high as 22-24 Lbs (useing 100 Octane fuel of course) at 3300rpm EXCEPT that my ET remains at 13.09 @ 105(stock IX)for the simple reason that as the RPM's increase, my dam boost DECREASES all the way back to 16-17LBS at 5500-7000...so therefore for Drag Racing my Bleed Valve is USELESS!!!!
NOW though, if i REMOVE this Restrictor Pill at the solenoid youre saying my boost will NO LONGER DECREASE!!!!!!??????????????????
Last edited by NewEVO9; Nov 23, 2006 at 06:03 AM.
Yes i KNOW that, but like a LOT of folkss I'd RATHER NOT spend $300 on a Flash right now...SO...
..Will REMOVING the pill help REMOVE the Taper or NOT!!
Seems kile it's IMPOSSIBLE to get a CLEAR ANSWER on this!!!
..Will REMOVING the pill help REMOVE the Taper or NOT!!
Seems kile it's IMPOSSIBLE to get a CLEAR ANSWER on this!!!
Originally Posted by NewEVO9
Yes i KNOW that, but like a LOT of folkss I'd RATHER NOT spend $300 on a Flash right now...SO...
..Will REMOVING the pill help REMOVE the Taper or NOT!!
Seems kile it's IMPOSSIBLE to get a CLEAR ANSWER on this!!!
..Will REMOVING the pill help REMOVE the Taper or NOT!!
Seems kile it's IMPOSSIBLE to get a CLEAR ANSWER on this!!!

However, The answer is not as clear as you seem to want.. YES you can remove taper WITHIN REASON, there is a mechanical limitation that also can cause the taper in boost. YES you CAN reduce the tapering by removing the restrictor and altering the boost tables. Unfortunately it takes time to adjust the tables because removing the restricter increases the spike you will get initially..
Just removing the restrictor will increase the spike slightly, and raise the boost levels slightly at higher RPM.. Along the lines of your bleeder valve..
That bleeder valve your describing sounds lot like the TurboXS bleeder for the UTEC.
Last edited by MalibuJack; Nov 23, 2006 at 08:21 AM.
Thanks Malibu, I APPOLOGIZE to EVERYONE for being rude..Yes, I've been into the Turbo Buicks for 20 years and EVERYONE just uses a SIMPLE BLEED VALVE, and I really just want to keep it SIMPLE...Now the Spike in Boost will only happen at ~3300
or so and THAT I can handle/modulate during normal driving...During a 1/4 mile pass though I'm Already way above that at 4800 right at launch, so I'll try it and see...
THANKS Malibu!!
or so and THAT I can handle/modulate during normal driving...During a 1/4 mile pass though I'm Already way above that at 4800 right at launch, so I'll try it and see...
THANKS Malibu!!
OK, and the Verdic is:
It WORKS!! To a point though, if I have my Bleed Off opened ~3/8ths way (#7 on the pointer) It Spikes to 22 at Launch and winds up at 19PSI at 7000rpm shift points...I VERIFIED this by making 5 Passes with my Son in the back seat Religously watching the gauge during the passes...Now if I open it too much it spikes to ~24psi and TAPERS back to 17psi at the shifts, so it's NOT Linear....
Thanks for all there replies, i DO appreciate it
It WORKS!! To a point though, if I have my Bleed Off opened ~3/8ths way (#7 on the pointer) It Spikes to 22 at Launch and winds up at 19PSI at 7000rpm shift points...I VERIFIED this by making 5 Passes with my Son in the back seat Religously watching the gauge during the passes...Now if I open it too much it spikes to ~24psi and TAPERS back to 17psi at the shifts, so it's NOT Linear....
Thanks for all there replies, i DO appreciate it
I honestly think you will have more consistant and better results by not bleeding the WGA air and by separating the solenoid from the system alltogether and installing a ball/spring device to control the WGA input.

just cap all the other connections, keep the wga solenoid electrically plugged in to complete the ecu circuit loop (or you get SES), and keep the hose from MBC to WGA short as possible (decrease spikes).
With a strong DV setup the MBC is still tough to beat, even with IX's and EcuFlash wizards trying to use an open/close solenoid to perform a task which requires a torque motor driven solenoid, close but no cake. My mbc keeps psi on manifold at 24, whether turbo is well loaded and capable of more or in conditions barely producing 24psi, if turbo can produce it, the mbc can maintain it, and no more as well.
Sorry, had to say this sometime and it happened to be now

just cap all the other connections, keep the wga solenoid electrically plugged in to complete the ecu circuit loop (or you get SES), and keep the hose from MBC to WGA short as possible (decrease spikes).
With a strong DV setup the MBC is still tough to beat, even with IX's and EcuFlash wizards trying to use an open/close solenoid to perform a task which requires a torque motor driven solenoid, close but no cake. My mbc keeps psi on manifold at 24, whether turbo is well loaded and capable of more or in conditions barely producing 24psi, if turbo can produce it, the mbc can maintain it, and no more as well.
Sorry, had to say this sometime and it happened to be now
MBC's cannot compensate for weather changes.. Cold days can result in larger boost spikes than hot days..
the stock solenoid and settings aren't "Great" for this sort of thing either, but it is still better IMHO than an MBC
The best solution is to use an aftermarket perrin solenoid with an EBC setup, or with the stock ECU's boost control maps.
the stock solenoid and settings aren't "Great" for this sort of thing either, but it is still better IMHO than an MBC
The best solution is to use an aftermarket perrin solenoid with an EBC setup, or with the stock ECU's boost control maps.
Originally Posted by MalibuJack
MBC's cannot compensate for weather changes.. Cold days can result in larger boost spikes than hot days..
the stock solenoid and settings aren't "Great" for this sort of thing either, but it is still better IMHO than an MBC
The best solution is to use an aftermarket perrin solenoid with an EBC setup, or with the stock ECU's boost control maps.
the stock solenoid and settings aren't "Great" for this sort of thing either, but it is still better IMHO than an MBC
The best solution is to use an aftermarket perrin solenoid with an EBC setup, or with the stock ECU's boost control maps.
Can you actually calibrate a perrin solenoid with the stock ecu boost maps?
Originally Posted by MalibuJack
Its not necessary to remove both of the pills..
The pill on the vacuum source by the turbo sets the base restriction, around 14-15psi or so.. If you remove it, you will get wastegate pressure which is 10.5psi
The upper pill on the solenoid is the one you can remove that will give you the most control..
Removing both will give you the most range, but may be the most difficult to set up in the ECU..
Trial and error is your friend..
The pill on the vacuum source by the turbo sets the base restriction, around 14-15psi or so.. If you remove it, you will get wastegate pressure which is 10.5psi
The upper pill on the solenoid is the one you can remove that will give you the most control..
Removing both will give you the most range, but may be the most difficult to set up in the ECU..
Trial and error is your friend..





