Author Topic: how many g/s are you getting air mass/ maf??  (Read 3775 times)

Offline rio_gti

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Re: how many g/s are you getting air mass/ maf??
« Reply #10 on: 13 May 2011, 22:48 »
aaronGS i likey!!!  :laugh:  :grin:

also didnt know you can see actual vs specified???  :shocked:



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Offline Dave_IOW

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Re: how many g/s are you getting air mass/ maf??
« Reply #11 on: 13 May 2011, 23:04 »
actual vs requested, block 25 is one (actual) i think, unsure of requested, 112 maybe?
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Offline RTechUK

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Re: how many g/s are you getting air mass/ maf??
« Reply #12 on: 14 May 2011, 00:22 »
actual vs requested, block 25 is one (actual) i think, unsure of requested, 112 maybe?

Block 25 is the block I use when load/ boost mapping on the AGUs as these maps realted direct to the maps I alter in the map code. This will give a good enough visual picture of how the car boost / N75 system is working.   (The load is a % made up from MAF readings, RPM, AIT, displacement and a X constant, so in the AGU mapping load in a way represents boost)
 On blocks 25 the corrected load is a mass weighing factor correction based on atmospheric conditions and will change all the time to allow the car achieve an SAE power out put.
 A good sign of issues is the loads not meeting each other and the N75% close on to 95% across the range. If they dont match and the N75 is high then there could be a boost leak, faulty N75, weak actuator, or cam pully retarded 1 tooth.
  If the car is making good power on the road, and via a boost gauge your seeing a strong boost but still getting low load%, high N75%dc with a low maf reading then this is a sign of a maf under reading and not lettting the ecu see the load has been matched.

If you can post up screen shots of your 002 025 logs text and graph then I can talk and explain more.

It Very easy ecu to understand, map and data log.



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