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Default Difference between Boost and Boost 2? - 07-13-2019, 07:04 AM

I was concerned about throttle being cut between first and second gear so I posted about it on the Kia Stinger forum. Terry mentioned that it was "normal" and if I was concerned, to look at the difference between psi and psi 2. The JB4 app, when logging Stinger parameters, only has Boost and Boost 2, which I'm assuming are the same thing?

Basically, what's the difference between Boost and Boost 2? And what exactly am I supposed to look for in variances to know whether or not there is a problem?

I've already looked at the "how to read JB4 logs" thread, but there's no mention of Boost 2 or psi 2.
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Default 07-15-2019, 10:33 AM

Checking back in. Does anyone know anything about Boost 2?
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Default 07-15-2019, 12:17 PM

IIRC Boost 1 is intake manifold, boost 2 is chargepipe.


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Default 07-15-2019, 01:20 PM

Thanks Payam! Is this the same as psi and psi2 on other cars? Terry mentioned that I could look at the differences between psi and psi2 to determine if the engine was running fine.

If boost and boost2 are the same as psi and psi2, what exactly should I be looking for in the variations to determine if there's an issue?
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Default 07-15-2019, 02:15 PM

Quote:
Originally Posted by Mr. Tech
Thanks Payam! Is this the same as psi and psi2 on other cars? Terry mentioned that I could look at the differences between psi and psi2 to determine if the engine was running fine.

If boost and boost2 are the same as psi and psi2, what exactly should I be looking for in the variations to determine if there's an issue?
Yes, exactly.

I doubt you'd see any variations. You can post a log if you have any concerns and we can look it over for you.


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Default 07-16-2019, 05:58 AM

Hi Payam, I have two logs in this post that you can take a look at:
Stinger JB4 Map 2 93 octane logs - N54Tech.com - International Turbo Racing Discussion

What exactly would you be looking for to know if there was an issue? Since the only difference between boost and boost 2 is that they are on either side of the throttle body, would the only issue be seen as a large spike in boost 2 when the throttle closes? Since that would point to a bad diverter valve?

Also, in general, how to the two logs look? See any issues in any of the parameters?
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Default 07-16-2019, 09:15 AM

Quote:
Originally Posted by Mr. Tech
Hi Payam, I have two logs in this post that you can take a look at:
Stinger JB4 Map 2 93 octane logs - N54Tech.com - International Turbo Racing Discussion

What exactly would you be looking for to know if there was an issue? Since the only difference between boost and boost 2 is that they are on either side of the throttle body, would the only issue be seen as a large spike in boost 2 when the throttle closes? Since that would point to a bad diverter valve?

Also, in general, how to the two logs look? See any issues in any of the parameters?
Logs look great. Just replied in the other thread.

Nothing really in the boost 1 and 2. You'd see a spike as you said during let off, that's normal. The DV isn't instant reaction when you let off so you will see a little boost spike.


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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Default 07-16-2019, 09:36 AM

Thanks Payam! Good to know about small boost spikes being normal. I also just replied in the other thread.
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