HOW TO - Control boost using ECUFLash and the stock boost solenoid
Thread Starter
Joined: Jun 2005
Posts: 3,419
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From: Chico, CA (NOR-CAL)
Originally Posted by jcsbanks
How about moving the restrictor from before the solenoid to the pipe between the compressor outlet and the T-piece? Not seen USDM pipework to know if the sizes are the same.
Thread Starter
Joined: Jun 2005
Posts: 3,419
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From: Chico, CA (NOR-CAL)
Originally Posted by cij911
OK sorry but I am having trouble finding the correct drill bits.
I found a 1/16 drill bit (too big), but nothing close to a 1.09mm to 1.02. Where did you find #57 - #60? Also, Lowes sells Brass rod 3/16 which may hold up better than aluminum. Thanks
I found a 1/16 drill bit (too big), but nothing close to a 1.09mm to 1.02. Where did you find #57 - #60? Also, Lowes sells Brass rod 3/16 which may hold up better than aluminum. Thanks
Thread Starter
Joined: Jun 2005
Posts: 3,419
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From: Chico, CA (NOR-CAL)
Originally Posted by heyzeus11
I dont agree with this, with the pill near the solenoid removed you should beable to raise the boost by altering the desired target load values; maybe when you tested this your boost limit values were to low. With the pill near the solenoid removed, I normally just zero out the error correction and just use the wastegate duty values to control boost; but if fill the error correction values back in and enter load values at each rpm point, in the desired target load table(s), that are higher then the load I would normally see, the boost increases. Just as if i put lower values in the desired target load the boost decreases.
Originally Posted by chrisw
I tried this. I could never get more than 20psi, but I could easily control the boost levels below that maximum with ease using the boost load tables.
You need the right combination of boost pills to control the basic wastegate operation.
You need the right combination of boost pills to control the basic wastegate operation.
Like Chris said, I also couldn't get boost to what would be needed for race gas (25+lbs). And yes, my boost limit is high enough.
Heyzues, did you try using your method to boost above 25lbs. I doubt it will work.
Evolved Member
Joined: May 2006
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From: UK
Originally Posted by Evo_Kid
On MJ site, somone posted this as a way to control boost. But the pill by the solenoid is bigger, and it need to be smaller to make more boost.
Series resistance adds up.
I can't test this as my JDM/UK car has twin solenoids, and even with the original restrictors in place it can hit 25 PSI.
Last edited by jcsbanks; Oct 12, 2006 at 02:49 PM.
Thread Starter
Joined: Jun 2005
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From: Chico, CA (NOR-CAL)
Originally Posted by jcsbanks
If you have it in addition to the original restrictor though...
Series resistance adds up.
I can't test this as my JDM/UK car has twin solenoids, and even with the original restrictors in place it can hit 25 PSI.
Series resistance adds up.
I can't test this as my JDM/UK car has twin solenoids, and even with the original restrictors in place it can hit 25 PSI.
When you say you hit 25lbs, is that on a gauge or a MAP sensor??
The restrictor by the solenoid is a lot bigger then the one by the turbo and I dont think it will add enough resistance to boost 25+lbs.
Originally Posted by Evo_Kid
Heyzues, did you try using your method to boost above 25lbs. I doubt it will work.
Thread Starter
Joined: Jun 2005
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From: Chico, CA (NOR-CAL)
Originally Posted by heyzeus11
No, I never tried to get up to 25lbs, but I was able to go over 20lbs. I will test this again this weekend with race gas; and post my results in this thread. I am not trying to argue with you, just mentioning results I have noticed.
When I took out the pill near the solenoid, boost more likly to spike and not as stable.
Anyways, I think I figured out a better way of control, still using the modified pill by the turbo and stock pill by the solenoid. Im gonna test it out tonight hopefully.
Last edited by Evo_Jay; Oct 12, 2006 at 08:49 PM.
Evo_Kid, when you said you could not go above 20lbs, did you mean at all or just up top. Below are my values in my max wastegate duty maps. I should beable to get over 20psi up to 6k, but after that I do not have much room to work with since up top it is already at 98.0. From my values below I should beable to adjust boost above 20psi in the mid-range; but up top I do not have any room to work with.
rpm waste duty #1 waste duty #2
3500 83.5 85.0
4000 83.5 85.0
4500 86.0 87.0
5000 91.0 91.0
5500 94.0 94.0
6000 98.0 98.0
6500 98.0 98.0
7000 98.0 98.0
rpm waste duty #1 waste duty #2
3500 83.5 85.0
4000 83.5 85.0
4500 86.0 87.0
5000 91.0 91.0
5500 94.0 94.0
6000 98.0 98.0
6500 98.0 98.0
7000 98.0 98.0
Thread Starter
Joined: Jun 2005
Posts: 3,419
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From: Chico, CA (NOR-CAL)
Originally Posted by heyzeus11
Evo_Kid, when you said you could not go above 20lbs, did you mean at all or just up top. Below are my values in my max wastegate duty maps. I should beable to get over 20psi up to 6k, but after that I do not have much room to work with since up top it is already at 98.0. From my values below I should beable to adjust boost above 20psi in the mid-range; but up top I do not have any room to work with.
rpm waste duty #1 waste duty #2
3500 83.5 85.0
4000 83.5 85.0
4500 86.0 87.0
5000 91.0 91.0
5500 94.0 94.0
6000 98.0 98.0
6500 98.0 98.0
7000 98.0 98.0
rpm waste duty #1 waste duty #2
3500 83.5 85.0
4000 83.5 85.0
4500 86.0 87.0
5000 91.0 91.0
5500 94.0 94.0
6000 98.0 98.0
6500 98.0 98.0
7000 98.0 98.0
Also, I believe that you only have to change table # 2. I think table #1 is for warm-up and that table #3 is for limp mode. I could be wrong though.
When I make changes I just make table # 1-3 all the same anyways, since it not known for sure if table #2 is the one to make changes to.
Last edited by Evo_Jay; Oct 13, 2006 at 01:41 AM.
Thread Starter
Joined: Jun 2005
Posts: 3,419
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From: Chico, CA (NOR-CAL)
I went out and played with boost desired load target. Lowering it from 159 to 60 did nothing.
I dont think it has any control of the boost, but I do think its very important to correct boost control and a stable boost curve.
Going back outside right now to try a couple new thing.......
I dont think it has any control of the boost, but I do think its very important to correct boost control and a stable boost curve.
Going back outside right now to try a couple new thing.......
Evolved Member
Joined: May 2006
Posts: 2,399
Likes: 6
From: UK
Yes Evo Kid, logged from the IX MAP sensor using the request ID I found for it in Evoscan - it goes to over 3 bar absolute, calibration from the service manual. I've also checked the calibration against boost gauge and AVC-R - they all match.
It is routine to peak at 26 PSI using OEM dual solenoids with the restrictors removed on pump fuel by UK mappers. With the restrictors removed you usually need a bit less than 100% duty on the second solenoid to achieve this.
It is routine to peak at 26 PSI using OEM dual solenoids with the restrictors removed on pump fuel by UK mappers. With the restrictors removed you usually need a bit less than 100% duty on the second solenoid to achieve this.
Originally Posted by jcsbanks
Yes Evo Kid, logged from the IX MAP sensor using the request ID I found for it in Evoscan - it goes to over 3 bar absolute, calibration from the service manual. I've also checked the calibration against boost gauge and AVC-R - they all match.
It is routine to peak at 26 PSI using OEM dual solenoids with the restrictors removed on pump fuel by UK mappers. With the restrictors removed you usually need a bit less than 100% duty on the second solenoid to achieve this.
It is routine to peak at 26 PSI using OEM dual solenoids with the restrictors removed on pump fuel by UK mappers. With the restrictors removed you usually need a bit less than 100% duty on the second solenoid to achieve this.
Thread Starter
Joined: Jun 2005
Posts: 3,419
Likes: 14
From: Chico, CA (NOR-CAL)
Originally Posted by jcsbanks
Yes Evo Kid, logged from the IX MAP sensor using the request ID I found for it in Evoscan - it goes to over 3 bar absolute, calibration from the service manual. I've also checked the calibration against boost gauge and AVC-R - they all match.
It is routine to peak at 26 PSI using OEM dual solenoids with the restrictors removed on pump fuel by UK mappers. With the restrictors removed you usually need a bit less than 100% duty on the second solenoid to achieve this.
It is routine to peak at 26 PSI using OEM dual solenoids with the restrictors removed on pump fuel by UK mappers. With the restrictors removed you usually need a bit less than 100% duty on the second solenoid to achieve this.
I wonder if the duel solenoid setup can be installed on a USDM IX.
Thread Starter
Joined: Jun 2005
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From: Chico, CA (NOR-CAL)
Originally Posted by mchuang
Woohoo so jsc if we remove restrictors and drop wastegate duty the boost will go up?
If you remove the restrictor near teh boost solenoid, boost will go up anywhere from 2-5lbs and you may have to lower WG duty to get your desired boost.
Originally Posted by Evo_Kid
If you remove both restrictors, you 'll only boost WG pressure.
If you remove the restrictor near teh boost solenoid, boost will go up anywhere from 2-5lbs and you may have to lower WG duty to get your desired boost.
If you remove the restrictor near teh boost solenoid, boost will go up anywhere from 2-5lbs and you may have to lower WG duty to get your desired boost.