Narrowed down the problem

[bentaw]

Just want to say thanks to Mork and Kev and anyone else who has tried to help sort out my boost problem on my car, Kev came to the conclusion that i need to update my code (Revo) as what my car was asking for wasnt right.

So until i do some more logs with my new code( when i get it) here are some snippets of the logs that i have done recently what do you think,

Temperature Temperature Ign. Timing

°C °C °BTDC
87 20 3
87 19 4.5
87 20 6.8
88 21 9
88 23 11.3
88 23 5.3
88 24 9.8
88 24 9
88 25 9.8
89 24 33
89 22 1.5
90 23 2.3
90 23 2.3
90 24 2.3
90 24 32.3

Idle Stabilization Idle Stabilization Idle Stabilization Idle Stabilization

CF CF CF CF
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 3
0 0 0 3
0 0 0 2.3
0 0 0 0
0 0 0 0


That one was done on a run in 3rd gear from 2500rpm all way to redline.

RPM Load Inj. On Time Mass Flow

/min % ms g/s
3680 191.7 20.06 185
4440 191.7 19.38 192.36
5000 191.7 18.36 200.5
5520 191.7 16.66 208.89
5920 186.5 16.66 211.92
4600 109.8 11.22 129.56
4840 191.7 20.06 194.17
5080 191.7 18.02 199.69
5400 191.7 17.68 206.56
4280 27.1 2.04 7.25
3360 12.8 0 7.69
3200 12.8 0 8.03
3080 12.8 0 7.69
3000 15 1.7 9
2920 32.3 2.72 19.56

 

[m0rk]

that's a lot more like it!

You couuld probably notch the timing up 1 - but you're certainly hitting peak air flow, or damn near it at 5400 - would be interesting to see a log to the redline to see if you're sustaining it (I think you will do with the fmic though)

 

[bentaw]

Yeah i thought it had good air flow too but that 0.3 of bar that was mentioned last year as being down against requested boost is still there, which Kev believes is the code.

If you look at this it shows it clearly

RPM Load Absolute Pres. Absolute Pres.

/min % mbar mbar
1680 50.4 970 980
1760 54.9 970 1010
2320 16.5 970 980
2280 15.8 970 980
2280 30.8 970 980
2280 33.8 970 990
2280 33.8 970 990
2240 34.6 970 990
2240 36.8 970 990
2240 36.8 970 990
2280 57.1 970 1020
2360 73.7 1260 1070
2600 126.3 1690 1400
2920 191.7 2000 2190
3320 191.7 2550 2370
3960 191.7 2300 2490
4680 191.7 2520 2350
5200 191.7 2450 2180
5680 189.5 2340 2080
6040 186.5 2250 1990
6400 168.4 2210 1990
5080 131.6 2410 1620
5320 191.7 2420 2190
5520 191.7 2370 2130
5760 182.7 2320 2110
6000 180.5 2270 2050


That is the reason Kev said i needed the new code especially as she is asking for near 1.3 bar at 6000rpm

 

[bentaw]

This log is another run i did although i didnt hit 211 g/s i hit near it at 6200rpm i think

RPM Load Inj. On Time Mass Flow

/min % ms g/s
3600 191.7 20.4 174.94
4240 191.7 20.06 183.17
4760 191.7 18.7 190.08
5360 191.7 17 198.39
5840 182.7 16.32 206.81
6240 178.9 16.32 208.25
5000 115.8 12.92 149
5240 191.7 18.02 196.81
5480 191.7 17 202.69
5680 187.2 16.66 204.92
5840 180.5 17.34 204.28
6080 179.7 18.36 206.25
4840 110.5 8.16 111.92
3880 96.2 8.16 92.39
3800 14.3 1.36 3.25
3600 12.8 0 8.64
3480 12.8 0 8.39
3320 13.5 0 8.44
3240 14.3 1.7 9.08

 

[Feel]

I'm confused. So what version are you running now? And you'r going to get a new version right?

Have you got any logs of N75 Duty cycle? Group 118?

Your boost looks very similar to mine, especially the >5200 rpm , although mine flows nothing like the 200 g/sec that yours does, it used to and hence my worry that I've got a problem.

 

[bentaw]

Revo stg1 dont know what version of it i have heard rumours that there isnt an updated code for what i have already but i will have to speak to simon at Mega 4 to see what i can arrange, if your airflow is low have you changed your MAF.

I havnt got logs for that i wanted to log that but didnt know what number it was i might log that in a bit what would it be best to log it next too

 

[bentaw]

Just logged 118 what do you guys think does this look right as i dont know what i am looking at on this one

RPM Temperature Load

/min °C %
1880 25 17.3
2480 23 41.2
1760 21 12.5
2000 21 100
2440 18 100
2960 18 99.2
3720 17 87.8
4480 17 96.9
5040 18 97.6
5600 20 96.1
6120 21 100
6080 21 0
5320 23 100
5560 23 0
4280 21 0
4040 23 0
3680 24 0
3400 26 0
3160 26 0
2440 27 0
2280 27 0
2200 27 0
2120 27 0
2080 27 0

 

[bentaw]

on that same log i hit 211 g/s again aswel

RPM Load Inj. On Time Mass Flow

/min % ms g/s
1680 61.7 5.1 20.92
2040 78.9 6.12 33.06
2360 17.3 1.36 2.61
1840 73.7 6.12 27.64
2120 114.3 9.18 51.67
2600 154.9 12.92 85.72
3240 191.7 19.72 166.53
4040 191.7 20.74 184.89
4680 191.7 19.38 192.11
5200 191.7 18.02 199.69
5840 185.7 16.66 207.56
6280 179.7 15.98 211.92
5120 109 9.86 148.69
5440 191.7 17 207.06
5080 13.5 1.36 0
4320 12.8 0 9.42
3960 12.8 0 10
3560 12.8 0 9.14
3360 12.8 0 8.33
2880 13.5 0 7.81
2360 12.8 0 5.67
2240 12.8 0 5.56
2160 13.5 0 5.75
2120 13.5 0 5.56

 

[bentaw]

Also i was just reading Pabs DV problem and i often hear that "chatter" noise especially when i go to put my foot down on the motorway and just as the turbo starts whistling i let off, could this be the cause of my boost problem i need a stronger spring????

 

[Pabs]

if you read my thread, I am now thinking a weaker spring has improved the problem. Getting really confused -

Bill said:

Chatter is DV not working. Insufficient vacuum and or overly hard spring to overcome..

And that now makes more sense to me than needing a stronger spring. I'm just trying everything I can to solve it.
Think the next thing is to bypass the N249, and that should make the vacuum at the top of the DV stronger... (if the n249 isnt working quite right)

I still have NO errors on vag-com, so thats good.

 

[bentaw]

My worry is though if that is the stem of my boost problem and i change for a weaker spring will my car be seeing 1.3 bar at 6000rpm if so thats not good surely

 

[bentaw]

I also think since i put 2 3" cold air feeds into my "modified" BMC CDA i have increased that airflow massivly before i was only seeing 190 g/s and now 211.92 at 6200rpm i think is the impressive part, does anyone know if my N75 valve looks ok from that log by the way

 

[Feel]

N75 looks better than mine, mine's pegged at 100% at anything over boost 3 Timing 6 (Optimax) What boost and timing sttings are you running?

 

[bentaw]

low boost 9 and timing 6 i think as that is the equivelant setting on the sps2 for 98ron fuel as that is what mine is set at

 

[ibizacupra]

My worry is though if that is the stem of my boost problem and i change for a weaker spring will my car be seeing 1.3 bar at 6000rpm if so thats not good surely

1.6bar on mine... ~400bhp and stdndard green spring.... yellow or more and the DV does not work properly on mine. Direct fed from intake manifold in 5mm bore pipe... No N249 crap on mine..

 

[flashbsd]

I was in the same situation with revo, wasnt running right, m0rk did some logs with me, my timing was pulling back alot, so out came his sps3 and backed it off a bit, runs much better now, and pulls much higher up. lots of Very helpful people on this forum

1.6bar on mine... ~400bhp and stdndard green spring.... yellow or more and the DV does not work properly on mine. Direct fed from intake manifold in 5mm bore pipe... No N249 crap on mine..

does this have any advantage over using the plastic crappy thing?

 

[bentaw]

what does the n249 do then

 

[bentaw]

so my car could hit 1.3 bar at redline and be fine then bill yeah, as far as i know i have the standard spring in my DV as i havnt changed it since purchase

 

[Pabs]

must say i'm much happier now i've reverted back to std green spring - yellow and blue both causing the "chatter" noise i've been ranting on about for ages. Green still does it very occasionally, but SO much better than before.

Car today seemed SO fast too - it pulls like a steam train!
Grin Factor is HUGE at the mo!

 

[ibizacupra]

Std Green works for me... and I always say the same thing.

why make it harder for the DV to open?