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Old 06-07-2006, 11:28 AM   #1
jblaine
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Default Anyone running GM boost solenoid with Hydra?

Comments? Experiences?
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Old 06-08-2006, 12:03 PM   #2
Element Tuning
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Anything particular you would like to know. I've tuned a few with UTECs and I'm pretty sure I've done at least one with a Hydra. You get more control out of the higher flow solenoids available so you can ramp the boost a little faster without so much spiking.
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Old 06-08-2006, 12:58 PM   #3
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Nope, nothing in particular. Just looking for any gotchas or map-specific tips.
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Old 06-08-2006, 03:59 PM   #4
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Well, hopefully Phil will be swinging out my way in the near future and I plan to have a GM solenoid on for when he tunes my car. If that works out I will make sure to relay any info that comes out of it.

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Old 06-11-2006, 03:07 AM   #5
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I ran a GM solenoid with the Hydra's boost control for about 1000 miles before going to an e-Boost. It works fine. Hydra was pulsing the solenoid directly off of the factory wire (ground). Anything else you want to know?
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Old 06-14-2006, 01:15 PM   #6
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Well, I installed it last night.

LOUD solenoid.

Additionally, I barely had to change any boost settings, which is very surprising to me. I reduced PWM map 4 a tiiiiiny bit and that was all.
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Old 06-14-2006, 02:02 PM   #7
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Quote:
Originally Posted by jblaine
Well, I installed it last night.

LOUD solenoid.

Additionally, I barely had to change any boost settings, which is very surprising to me. I reduced PWM map 4 a tiiiiiny bit and that was all.
So have you had time to to do some logging with it yet? Do you find it easier to hit and hold your boost targets now, etc.?

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Old 06-14-2006, 02:06 PM   #8
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I did a little datalogging last night. Using the same settings as pre-GM, I hit ~14.7psi at damn near the same spot as before. I intend to slowly try to improve that, but consider me initially unimpressed.
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Old 06-14-2006, 03:09 PM   #9
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jblaine,

Your current boost system was tuned pretty well so it's going to be hard to see major improvements. Try increasing the "integral" to see if you can net an improvenent in spoolup without the spiking. If you start to spike right off the bat it's unlikely the GM solenoid will be an improvement. You can also increase the higher load sites of PWM Map 4 (70% to 100%) also for faster ramp up. Don't forget to monitor is it holds boost a little better as it has a slightly better flow rate.

Thanks,
Phil
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Old 06-16-2006, 11:10 AM   #10
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Hmm.

Need a little help.

Please see page 4: http://forums.nasioc.com/forums/showthread.php?t=870619

Basically the solenoid is active at idle. Boost start is set to 1900RPM as it always has been. What am I doing wrong?
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Old 06-16-2006, 11:11 AM   #11
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Old 06-18-2006, 11:30 PM   #12
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Anybody? Hoping someone has experienced this with the Hydra + GM solenoid and has an easy answer.

Doesn't make any sense to me. Wired either way, I get the same results.
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Old 06-19-2006, 10:22 AM   #13
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Fixed.

You MUST set the 0% cell in PWM Map 4 to 0 in order to get the solenoid to be off at idle.

Which begs the question: How many people are riding around with Hydras and stock solenoids that are wearing out like mad because they're quiet but being energized.
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Old 06-19-2006, 10:22 AM   #14
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Try setting the boost control map (PWM Map 4) to 0 in the 0% load cell.

Thanks,
Phil
www.elementtuning.com
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Old 06-19-2006, 10:53 AM   #15
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Laugh. Simultaneous posting?
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Old 10-02-2006, 04:36 AM   #16
White 2.5rs
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any updates Jblaine?

I still have my GM solenoid from my link + i planned on using...I really dont want to go buy another boost controller

my setup
GT35R
built motor
P&P heads
stock header
custom catless uppipe

anyone who knows anything, please pipe in to help me out

thanks
alex
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Old 10-02-2006, 08:46 AM   #17
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No updates. Mine's working fine.
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Old 10-03-2006, 08:22 AM   #18
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jblaine - is this a worthwhile modification? Thanks!
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Old 10-03-2006, 08:32 AM   #19
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Well, others swear by it.

I did mine because it was cheap and my OEM boost control solenoid had 55,000 miles on it.

It bought me very very little.
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Old 10-03-2006, 08:39 AM   #20
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Right now I am currently working through trying to just get control of my boost. I am awaiting a new wastegate actuator, as I apparently have a 19psi one. I currently have the pressure port on the compressor housing plumbed directly to port on the actuator, which should net the lowest possible boost setting. I hold 21-22psi, but would like to knock it down a bit (once I get the new actuator).

I realize there will be negligible power gains (if any), but do you feel you have better control of your boost?

Thanks for any insight.
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Old 10-06-2006, 04:32 PM   #21
jblaine
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Couldn't really say. I threw it on as a cheap "why not" mod given that my stock BCS had 45,000 miles of salt and hell exposure. The mechanism is more optimal to me than the stock one.

I don't really have problems controlling my boost at all. I'm running 18-20-18psi as a general boost curve.
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Old 10-11-2006, 04:48 AM   #22
THE-95-STi
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I'm using the Turbosmart Eboost2, its a boost guage/controller, and for the price I got it at I completely happy with it, you can control waste gate sensitvity, 6 boost settings
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