Pages: 1 [2]
Author Topic: Ibiza 180 and TT 225 MAFs  (Read 21028 times)
sn00k
Sr. Member
****

Karma: +59/-2
Offline Offline

Posts: 277


« Reply #15 on: November 25, 2011, 08:36:57 AM »

actually, the 06A906461L housing have a straightener/net even after the sensor.. which might/will affect how the air moves down the intake tract.. thus the kfkhfm would need to be changed even tho the diameter of the housing or the tract itself havent been altered.. so I personally would copy even the kfkhfm.. anyway, keep us updated, this is interesting stuff.. and could save ppl some time/money if they have problems with a bad maf =)
Logged
rob.mwpropane
Sr. Member
****

Karma: +32/-0
Offline Offline

Posts: 370


WWW
« Reply #16 on: November 25, 2011, 09:42:23 AM »

actually, the 06A906461L housing have a straightener/net even after the sensor.. which might/will affect how the air moves down the intake tract.. thus the kfkhfm would need to be changed even tho the diameter of the housing or the tract itself havent been altered.. so I personally would copy even the kfkhfm.. anyway, keep us updated, this is interesting stuff.. and could save ppl some time/money if they have problems with a bad maf =)

Sorry, I reread the post. I was thinking he was using stock sensor/housing/tract for that car. My bad. What you say makes sense. I guess try it, see what your fuel trims look like.
Logged

This has nothing to do with cars but you can see my glorifying job at,

www.MWPropane.com
spatullo
Jr. Member
**

Karma: +3/-0
Offline Offline

Posts: 30


« Reply #17 on: November 25, 2011, 12:58:12 PM »

Ok, I have copied only the linearization, and 90% of the problems gone.
I'll update tomorrow, after further test.
Logged
Giannis
Full Member
***

Karma: +11/-1
Offline Offline

Posts: 176


« Reply #18 on: November 27, 2011, 03:21:44 AM »

I think that older non wideands 1.8t have different plug for the maf sensor. I also think that the "small" 180ps sensors are different in the onoard temperature sensor they have, and to the external case. The element should be the same. Correct me if i am wrong.
Logged
spatullo
Jr. Member
**

Karma: +3/-0
Offline Offline

Posts: 30


« Reply #19 on: November 28, 2011, 01:45:06 PM »

I can confirm that copying the linearization work well. Howeverm this car isn't a good test bench because when I made the previous tune for 440cc injectors the car isn't in good working order. After the MAF linearization paste I have to correct KRKTE and TVUB, but I have also repaired three boost leak so....
Logged
Giannis
Full Member
***

Karma: +11/-1
Offline Offline

Posts: 176


« Reply #20 on: November 28, 2011, 01:58:43 PM »

KRKTE and TVUB have nothing to do with maf scaling.
Logged
rob.mwpropane
Sr. Member
****

Karma: +32/-0
Offline Offline

Posts: 370


WWW
« Reply #21 on: November 30, 2011, 10:13:22 AM »

I think that older non wideands 1.8t have different plug for the maf sensor. I also think that the "small" 180ps sensors are different in the onoard temperature sensor they have, and to the external case. The element should be the same. Correct me if i am wrong.

If the car is turbo the onboard temp sensor, even if implemented, isn't used. NA cars need temp compensation, turbo cars do to, but air gets compressed/heated so its pointless. So I've been told; someone correct/school me if I'm wrong.
Logged

This has nothing to do with cars but you can see my glorifying job at,

www.MWPropane.com
Giannis
Full Member
***

Karma: +11/-1
Offline Offline

Posts: 176


« Reply #22 on: November 30, 2011, 10:57:28 AM »

I don't think you are right in this because all the cars have iat sensor regardless of maf ut the internal temp sensor that mafs have are for correcting their signal output as a raw value.
Logged
rob.mwpropane
Sr. Member
****

Karma: +32/-0
Offline Offline

Posts: 370


WWW
« Reply #23 on: December 11, 2011, 08:12:46 AM »

I've been meaning to get back to this thread for a while, just have'nt had the time. You will see in the pictures below that the 2 turbo applications do not have the temperature sensor, while the NA V8 does. Unless I'm missing something, I believe turbo cars don't have/need them? Again, school/teach me if I'm wrong..... it's still a very strong possibility! Grin          



***** Pictures were taken by member mmmboost *****
Logged

This has nothing to do with cars but you can see my glorifying job at,

www.MWPropane.com
sn00k
Sr. Member
****

Karma: +59/-2
Offline Offline

Posts: 277


« Reply #24 on: December 12, 2011, 12:53:09 AM »

nice picture  Smiley

it is true that you would need a sensor with much greater "range" on a turbo car since it compresses the air and therefore it will reach much higher temperatures, also it would need to be placed in the intake manifold.. after the air has been compressed, and after intercooler, thats why it has the external IAT.
(if you know the flow and the IAT, your ecu can calculate the density of the air entering the engine)

..but the integrated sensor is great for NA cars since u dont have to use another iat sensor in that setup.. id imagine this same sensor could be used in a blow thru maf turbo setup.. if the maf were to be placed after the ic.. Smiley
Logged
Pages: 1 [2]
  Print  
 
Jump to:  

Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Page created in 0.022 seconds with 18 queries. (Pretty URLs adds 0s, 0q)