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post #1 of 13 (permalink) Old 04-16-2015, 04:54 PM Thread Starter
 
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turbo boost value on guage

At what RPM are you starting to see a boost value on your guage ?
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post #2 of 13 (permalink) Old 04-17-2015, 08:43 PM
 
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Re: turbo boost value on guage

Hard to tell by looking at a gauge while accelerating, but my ecu can data log and I show boost starting around 6K rpm when taking off from a stop. I can pull some old data logs to get a better picture for you if need.

2009 Redline XL Turbo

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post #3 of 13 (permalink) Old 04-18-2015, 08:29 AM Thread Starter
 
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Re: turbo boost value on guage

Hi EASY E,

Anything you could share would be appreciated. I am trying to determine if a used turbo I got off e-bay is working correctly. And I figure the boost value is about the only way to check it.
Are you running a Queen ECU, AEM F/IC unit or another method for collecting engine data?

Thanks, Frank
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post #4 of 13 (permalink) Old 04-18-2015, 09:12 AM
 
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Re: turbo boost value on guage

Hey Frank,
I'm running the AEM EMS-4 stand alone and their AEMTuner software. I cut the oem harness and re-pinned for the AEM. I created an Adobe PDF showing how to do this, but Randy at Weberpower has a jumper harness so the EMS-4 can be plugged directly into the Redline harness.

I'll try to get some more data log info posted this weekend, but have quite a "list" going right now

2009 Redline XL Turbo

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post #5 of 13 (permalink) Old 04-18-2015, 09:24 AM Thread Starter
 
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Re: turbo boost value on guage

Eric,

Thanks for the info. I have a F/IC piggy back spliced into my harness that I am just now starting to learn.
Where did you get your intercooler and mounting brackets at?

Frank
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post #6 of 13 (permalink) Old 04-18-2015, 12:03 PM
 
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Re: turbo boost value on guage

Intercooler was an eBay unit (about $50 I think) and mount brackets I made.

2009 Redline XL Turbo

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post #7 of 13 (permalink) Old 04-24-2015, 08:10 PM
 
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Re: turbo boost value on guage

Hey Frank,
I have a cheaper guage on mine and it really doesn't show lower boost readings very well. It doesn't like anything below 8lbs. As long as when you start from a dead stop you should be able to pin it and see 15lbs almost instantly. At least I do the way I am clutched.


If I am just cruising at 6500 I show no boost but step down ..... there it is...


Do you have a manual boost controller?



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Last edited by sandracer1; 04-24-2015 at 08:15 PM.
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post #8 of 13 (permalink) Old 04-24-2015, 09:56 PM
 
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Re: turbo boost value on guage

We have about 6 lbs boost cruising at about 6,000 rpm. Sandracer is right on about when you floor it from a dead stop it should go up to your maximum boost setting that you have set with your manual boost controller pretty fast. Our cars idle at about 8 to 10 inches vacuum. Most of us set the max boost to 14 to 15 lbs. You won't see any boost until the engine is under load. Free revving the engine in neutral will not show boost. The vacuum reading will change but the boost will not until the car is actually in gear moving. If your boost seems low or high, adjust it with the manual controller. If it is way off it may take several clicks on the adjuster to get it where you need it. After that you shouldn't need to mess with it unless you go to a new riding area that is a different altitude or something mechanical is wrong. The boost gauge should be connected between the throttle body and the head or to a boost/vac manifold like we use. Our boost manifolds are hooked to both intake runners to give a more even signal. All other boost hoses are connected to this manifold that has 6 ports to use for these connections.
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post #9 of 13 (permalink) Old 04-25-2015, 12:36 PM
 
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Re: turbo boost value on guage

Quote:
Originally Posted by Pilot View Post
We have about 6 lbs boost cruising at about 6,000 rpm. Sandracer is right on about when you floor it from a dead stop it should go up to your maximum boost setting that you have set with your manual boost controller pretty fast. Our cars idle at about 8 to 10 inches vacuum. Most of us set the max boost to 14 to 15 lbs. You won't see any boost until the engine is under load. Free revving the engine in neutral will not show boost. The vacuum reading will change but the boost will not until the car is actually in gear moving. If your boost seems low or high, adjust it with the manual controller. If it is way off it may take several clicks on the adjuster to get it where you need it. After that you shouldn't need to mess with it unless you go to a new riding area that is a different altitude or something mechanical is wrong. The boost gauge should be connected between the throttle body and the head or to a boost/vac manifold like we use. Our boost manifolds are hooked to both intake runners to give a more even signal. All other boost hoses are connected to this manifold that has 6 ports to use for these connections.

Here is a picture of the boost manifold we use.

Last edited by klemdotter; 06-17-2015 at 08:34 PM.
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post #10 of 13 (permalink) Old 04-26-2015, 08:01 AM
 
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Re: turbo boost value on guage

In the beginning I had issues getting the preload on the actuator set corrrectly as well. If this is wrong you are sending your boost out of the waste gate. Worth a check.


I had to modify my mounting bracket to get the 3 rounds out if it.



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