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Model specific boards => Golf mk4 => Topic started by: rio_gti on 12 May 2011, 17:20

Title: how many g/s are you getting air mass/ maf??
Post by: rio_gti on 12 May 2011, 17:20
as above really whats the max your generally hitting??

i got 156 g/s after i cleaned it but now it appears a little lower (149 g/s)

just wanna see the average people are getting........  :smiley:
Title: Re: how many g/s are you getting air mass/ maf??
Post by: Dave_IOW on 12 May 2011, 17:38
think mine was 120 ish..
Title: Re: how many g/s are you getting air mass/ maf??
Post by: vwfiend on 12 May 2011, 17:42
Pretty sure mine is 187 or 188. You can do a calculation with the horsepower multiplied by the correction factor which is 0.8 to get around the g/s you should be hitting and the same the other way. For example   
236x0.8=188 g/s
Title: Re: how many g/s are you getting air mass/ maf??
Post by: Dave_IOW on 12 May 2011, 17:50
I tell a lie, mine was 138..

Look at post from R-tech to, doesnt make that much difference as long as requested and actual match!

Should be somewhere near 170 G/S if remapped right?
(http://i44.photobucket.com/albums/f11/Wellowpartys/MAFGraph.jpg)

We ran a Revo spec1 AGU with a fault N75 today and it pulled 107g/s via VCDS  and 149bhp via the dyno.

So in theory 107g/s @149bhp is around /.72

So 138g/s /.72 could work out to 190bhp?

Just been looking at my vagcom logs v customer dyno graphs and the average for around 185-192bhp is about 154g/s -160gs

Title: Re: how many g/s are you getting air mass/ maf??
Post by: RTechUK on 12 May 2011, 21:29
I tell a lie, mine was 138..

Look at post from R-tech to, doesnt make that much difference as long as requested and actual match!

Should be somewhere near 170 G/S if remapped right?
(http://i44.photobucket.com/albums/f11/Wellowpartys/MAFGraph.jpg)

We ran a Revo spec1 AGU with a fault N75 today and it pulled 107g/s via VCDS  and 149bhp via the dyno.

So in theory 107g/s @149bhp is around /.72

So 138g/s /.72 could work out to 190bhp?

Just been looking at my vagcom logs v customer dyno graphs and the average for around 185-192bhp is about 154g/s -160gs


Very low reading for k03s??
Title: Re: how many g/s are you getting air mass/ maf??
Post by: AaronGS on 12 May 2011, 22:02
305g/s on full tilt at last logging.
Title: Re: how many g/s are you getting air mass/ maf??
Post by: rio_gti on 13 May 2011, 09:34
305g/s on full tilt at last logging.


WOW what bhp you runnin!!!???  :laugh:



Title: Re: how many g/s are you getting air mass/ maf??
Post by: vwfiend on 13 May 2011, 19:06
244???
Title: Re: how many g/s are you getting air mass/ maf??
Post by: AaronGS on 13 May 2011, 20:33
305g/s on full tilt at last logging.


WOW what bhp you runnin!!!???  :laugh:





Rolling Roaded at 350bhp a few years back. I suspected some of those horses may have died but that g/s figure says maybe not?
Not very helpful for finding your average figure though! :wink:
Title: Re: how many g/s are you getting air mass/ maf??
Post by: Dave_IOW on 13 May 2011, 22:23
Very low reading for k03s??

That was on KO3, be back up your way shortly with Wazzzer to go custom  :wink:
Title: Re: how many g/s are you getting air mass/ maf??
Post by: rio_gti on 13 May 2011, 22:48
aaronGS i likey!!!  :laugh:  :grin:

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

Title: Re: how many g/s are you getting air mass/ maf??
Post by: Dave_IOW on 13 May 2011, 23:04
actual vs requested, block 25 is one (actual) i think, unsure of requested, 112 maybe?
Title: Re: how many g/s are you getting air mass/ maf??
Post by: RTechUK 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.