XK / XKR ( X150 ) 2006 - 2014

Intake retrofit in progress for our XKR!

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Old Nov 5, 2019 | 01:17 AM
  #41  
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Originally Posted by AlexJag
Avos you lost you with the map measurement.. you meant just to measure two values for faster refresh Map and RPM? But what would measurment from map tell me ? it won't show a restriction since it's inside the crankcase no?
Yes I agree on trying a run without filter , maybe just adding a nylon stocking so at least protect from the sand?
The MAP sensor sits in the intake elbow, the part between he TB and the SC. That one measures your total restriction before the Supercharger (so Filter Box/Filter/Maf/Piping and TB).
You could indeed do a nylon sock as long as you are sure it offers very low restriction of course.
 
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Old Nov 5, 2019 | 09:34 AM
  #42  
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Originally Posted by avos
an easy way to know for sure the impact on restriction is to do a run without filters, then all will be clear
I made that point 200 man-hours ago.
 
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Old Nov 5, 2019 | 10:02 AM
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I did this on a corvette , not supercharged and made no noticable difference.
 
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Old Nov 5, 2019 | 10:45 AM
  #44  
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I did this on a rental when I was younger and twice as smart as an ox.
And back then engineering depts at car manufacturers weren't even looking to extract every ounce of efficiency.

Nowadays, its so well calculated by not only army of good minds but also modelling software. Look at the intake tube on the 5.0.
 
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Old Nov 5, 2019 | 11:04 AM
  #45  
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I have no doubt engineers with vastly superior knowledge designed these intakes. My reasoning for building custom intakes was primarily to eliminate the resonators and increase supercharger whine, which it accomplished quite nicely. I also did not like how the intake snorkel openings were jammed up against the radiator brace facing the sky (SEE PIC BELOW), so I used slightly larger aluminum piping and larger filters facing forward in the direction of the incoming air plus larger exhaust piping. Since it is an air pump hopefully better flow. Also lost a few pounds of weight (added to all of the other weigh shaving modifications).

 
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Old Nov 5, 2019 | 05:51 PM
  #46  
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Originally Posted by avos
The MAP sensor sits in the intake elbow, the part between he TB and the SC. That one measures your total restriction before the Supercharger (so Filter Box/Filter/Maf/Piping and TB).
You could indeed do a nylon sock as long as you are sure it offers very low restriction of course.
Avos in sdd it will read from map sensor or boost pressure . Is that what's your referring to?
 
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Old Nov 5, 2019 | 06:01 PM
  #47  
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Originally Posted by avos
Of course its bigger ;-), the intake part is la bit larger, though the outlet that goes on the TB is te same size. The curving towards the TB is better which allows for a better flow into the TB.
Have you seen one installed on an s type by chance....just want to know if it allows the hood to close....got my eye on one....of course no returns if too big....the larger inlet i can handle
 
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Old Nov 5, 2019 | 11:52 PM
  #48  
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Originally Posted by AlexJag
Avos in sdd it will read from map sensor or boost pressure . Is that what's your referring to?
The MAP sensor, just try it you will see
 
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Old Nov 6, 2019 | 12:06 AM
  #49  
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Originally Posted by scottjh9
Have you seen one installed on an s type by chance....just want to know if it allows the hood to close....got my eye on one....of course no returns if too big....the larger inlet i can handle
I have installed one myself but have no pictures, it will fit. You may have to shave off some of the fins on the back of the intake that could touch the crossbar, that's it. I had to do that as it was on a 2.1 twin-screw conversion, which puts the intake closer to that cross bar, so maybe you do not have to do this.
 
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Old Nov 6, 2019 | 01:00 AM
  #50  
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Originally Posted by avos
The MAP sensor, just try it you will see
What am I suppose to try exactly, read boost measurement? Map sensor reads boost not vacuum restriction.
 
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Old Nov 6, 2019 | 01:10 AM
  #51  
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Can't add anything more that I have already said.

Just try and you will see
 
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Old Nov 6, 2019 | 02:47 AM
  #52  
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Originally Posted by avos
Can't add anything more that I have already said.

Just try and you will see
If your asking about max boost reading from map sensor they are around 180kpa..
 
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Old Nov 6, 2019 | 04:19 AM
  #53  
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Odd figure, usually the MAP sensor will give 100 KPI (atmospheric pressure, with ignition on but no engine running). 0 would be absolute vacuum
So assuming for instance at WOT you would have 1 psi vacuum restriction (about 7kpa) your max reading would be then 93kpi.
What value do you see with engine running at idle?

Edit, already get it, this is not the MAP sensor you show, this is the MAPT one that measures boost (and temperature after the SC)
 

Last edited by avos; Nov 6, 2019 at 04:23 AM.
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Old Nov 6, 2019 | 10:23 AM
  #54  
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Originally Posted by avos
I have installed one myself but have no pictures, it will fit. You may have to shave off some of the fins on the back of the intake that could touch the crossbar, that's it. I had to do that as it was on a 2.1 twin-screw conversion, which puts the intake closer to that cross bar, so maybe you do not have to do this.
Thanks avos, the xbar and cooling fin clearance is what i was looking at...i will get one
 
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Old Nov 6, 2019 | 02:56 PM
  #55  
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Originally Posted by avos
Odd figure, usually the MAP sensor will give 100 KPI (atmospheric pressure, with ignition on but no engine running). 0 would be absolute vacuum
So assuming for instance at WOT you would have 1 psi vacuum restriction (about 7kpa) your max reading would be then 93kpi.
What value do you see with engine running at idle?

Edit, already get it, this is not the MAP sensor you show, this is the MAPT one that measures boost (and temperature after the SC)
Avos it measures absolute pressure , atmospheric + boost , so no restriction can show. This however would work on Na vehicles in theory though..
 
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Old Nov 6, 2019 | 11:26 PM
  #56  
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Originally Posted by AlexJag
Avos it measures absolute pressure , atmospheric + boost , so no restriction can show. This however would work on Na vehicles in theory though..
No need to explain the MAPT sensor to me (or TMAP, the T stands for Temp), I know where it sits on your car and what it does, and is not of interest here at all, or I woud have asked for Boost pressure.

its the MAP sensor that is of interest
 
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Old Nov 7, 2019 | 12:07 AM
  #57  
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Originally Posted by avos
No need to explain the MAPT sensor to me (or TMAP, the T stands for Temp), I know where it sits on your car and what it does, and is not of interest here at all, or I woud have asked for Boost pressure.

its the MAP sensor that is of interest
Avos as far as I can tell we don't have another map sensor but please correct me if I'm wrong. I don't see anything else that can be logged from SDD
 
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Old Nov 7, 2019 | 12:16 AM
  #58  
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Originally Posted by AlexJag
Avos as far as I can tell we don't have another map sensor but please correct me if I'm wrong. I don't see anything else that can be logged from SDD
Have a look at your intake elbow (the part between the TB and SC). There is only one sensor unit on it (the MAP), it sits on the left hand side, and should be visible when looking. It is the same shape as the MAPT sensor, so you know how it looks.
 
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Old Nov 7, 2019 | 09:32 PM
  #59  
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Originally Posted by avos
Have a look at your intake elbow (the part between the TB and SC). There is only one sensor unit on it (the MAP), it sits on the left hand side, and should be visible when looking. It is the same shape as the MAPT sensor, so you know how it looks.
Anyway to read it? I can't find anything in SDD
 
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Old Nov 8, 2019 | 12:59 AM
  #60  
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Originally Posted by AlexJag
Anyway to read it? I can't find anything in SDD
Really odd, never heard this one that you can't find it, you may have an issue with you IDS setup, its such a standard sensor, its even a available for standard odbII readers.
 
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