Haltech Wastegate control
 

I read the 2 sentences that were in the user manual....and well, I have to say it didn’t light my bulb...lol. Ok so I get the just of it all.

There are two map settings. One for one fuel timing map and another for a second fuel timing map, hence a low (daily driver) setting and a high (track day) setting.

The maps are based on a "given" Duty cycle (similar to a fuel injector) and RPM range, for example you can have your boost set to 10PSI @ 2500 RPM 15PSI @ 4000RPM-9000RPM or you could set it 15PSI through the whole RPM range, however you need to figure out what the related duty cycle is for 15 PSI. I know you could start low and work your way up to the desired boost level but does the Duty cycle/boost level relationship change based on altitude or air density.

Lets say we are at sea level and I have set the duty cycle (@ 50% for this example) to reflect 15PSI through all RPM ranges. When I drive to the top of a 10,000 foot mountain is 50% duty cycle still going to reflect 15PSI of boost???

Also is zero % duty cycle equal to the spring rate in the wastegate? or is 100% equel to the spring rate in the wastegate

To answer your question...no.

There in lies the shitiness of the Haltech boost controller. Set it up at high noon when it's 80* ambient and you'll get more boost tonight when it's 65* ambient and the air is more dense. Do yourself a favor and throw the solenoid in the trash now and go with a good manual or EBC. If you're as lucky as I was you can sell it on ebay to someone in Norway for nearly what I paid for it.

FWIW the solenoid is normally open so you'll increase the duty cycle to increase boost.

The E11 and maybe the E8 (?) are supposed to be arriving with closed-loop MAP based boost control. Those of us with the E6 series are just SOL.

Don't do it...
The Haltech boost control SUX.

You're better off getting a good EBC.


-Ted

well i havent purchased any boost control solenoid... but i think i will just go with a good old fashion spring to control boost

[QUOTE=C. Ludwig]

The E11 and maybe the E8 (?) are supposed to be arriving with closed-loop MAP based boost control. Those of us with the E6 series are just SOL.[/QUOTE

Closed loop boost control on the E-11/8 series works great. It even got boost by gear. Their version of a simple traction control.!:)

i have the e8 and i've been told the boost control sucks... maybe i'll hook it up and see what the story is.

Just out of curiosity are you guys connecting the vaccum/boost hoses correctly to your wastegates? On the Haltech official board all the posts on boost control seem to be related to the hoses being connected wrong. I havent had the chance to test the wastegate control on the haltechs, but i have a car im working on now which i will give it a go and post the results. All the new ECUs are supposed to have great boost control so.

Here is a email chain i had with haltech. you have to read from the bottom up


Hello,

No, not at all. Most boost controllers on the market are open loop style. This means the solenoid is pulsed at a set frequency, rather than sensing boost, then adjusting its own frequency. The open loop style of boost control will work very well and I would expect boost levels to stay accurate to +/- 1PSI

If there is anything else we can help you with please let us know.

Best Regards
Scott Hilzinger
Haltech Sales/Tech Support
Email - scott@haltech.com
www.haltech.com

----- Original Message -----
To: <support@haltech.com>
Sent: Friday, October 07, 2005 12:36 AM
Subject: Re:


I have an E6X, does this mean that my wastegate control is really a useless feature


From: "Haltech Support" <support@haltech.com>

Subject: Re: Date: Thu, 6 Oct 2005 11:28:43 +1000

Hello,

The E8 and E11v2 ECU's both accommodate this. The use Closed loop boost control, which aims for a target boost level, rather than a solenoid duty cycle. This is the best way to control boost as like you said on hot or cold days, and at different altitudes the boost level will not change.

If there is anything else we can help you with please let us know.

Best Regards
Scott Hilzinger
Haltech Sales/Tech Support
Email - scott@haltech.com
www.haltech.com

----- Original Message -----
To: <support@haltech.com>
Sent: Thursday, October 06, 2005 6:24 AM


does your wastegate control feature change boost levels when the atmospheric pressure and air density changes

Back from the dead. I am glad I found this info...

I have an E6X and a Greddy Profec E01 Boost Controller that will be installed this winter. I was contemplating selling the E01 and going with the Haltech Boost control setup. Guess I will keep the E01.

Thanks guys.