MK5 Golf GTI
All Things Mk5 => Mk5 General Area => Topic started by: ROH ECHT on January 30, 2013, 05:43:17 am
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The giac remap I have is "2007 Golf ® 2.0T High Pressure K04 S3 Injectors HPFP FMIC TBE 130-140BAR RS4 FPR". I have everything for it and more, but I data logged my rail pressure today and got this from 5200 rpm to near redline;
rpm - rail pres.
5200 - 110.44
5440 - 111.15
5680 - 113.84
5920 - 112.35
6120 - 114.45
6320 - 113.7
6520 - 120.17
6720 - 127.7
6840 - 127.2
at the same time, boost request/specified was lower than usual;
Spec. - Act.
2230 - 2330
2200 - 2310
2150 - 2250
2100 - 2200
2080 - 2160
2070 - 2160
2060 - 2160
2060 - 2140
2060 - 2130
Wondering what my rail pressure graph should look similar to now...help please...
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Cam follower? :scared:
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What fuel?
What was the ambient temp?
Anything else out of the ordinary on the run/day?
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What was the requested fuel pressure?
Your boost numbers exceed some requests.
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Can follower? :scared:
Pepsi or coke? :grin:
Jesting aside, will an RS4 fuel pressure return valve help your application?
http://www.mk5golfgti.co.uk/forum/index.php/topic,43589.0.html
Edit: you already have one :(
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Cam follower? :scared:
No, just changed it a few weeks ago when I did the c/f change vid.
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What fuel?
What was the ambient temp?
Anything else out of the ordinary on the run/day?
92 octane along with a 91-93 remap.
Temp = 45 F
The motor lugged down a bit at the start of the pull. Didn't get to do logs today for groups 103, 115, and 230 (if correct?). But, the boost was right on with yesterdays boost. I have been messing around near the hpfp and my boost gage line is near it...I'll look at it too.
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What was the requested fuel pressure?
Your boost numbers exceed some requests.
I didn't log the correct boost for both low and high rail pressure yet. I hoped to do that today, but busy ;[
I adjusted my boost after the K04 install due to mis-calibration causing actual boost to be 3psi below specified back then. Up until now my actual boost has been 1.5psi above specified, and I have been very close to tuning it down a bit more for less lag and added low-end torque. Right now, or before this situation, my actual boost doesn't catch up to specified until around 4800rpm. Before, when boost was 3psi below specified, actual boost caught up to specified at 3000rpm with an AWE&GIAC K04 remap giving 364 lb*ft torque. I ran 12.8 sec. 1/4 et's with the old tune. Now, with the high pressure - high output K04 file, I run 13.0. I thought there would be more power with the latter remap, and it may, but needing to sort out its issues. Then....maybe, right?
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The giac remap I have is "2007 Golf ® 2.0T High Pressure K04 S3 Injectors HPFP FMIC TBE 130-140BAR RS4 FPR".
Wondering what my rail pressure graph should look similar to now...help please...
I meant to ask "does anybody have a similar remap and then a graph of their low vs high rail pressure?"
OOPS
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Today I picked up a DB revision in-tank lpfp and ordered a 145bar fprv(fuel pressure relief valve). Hoping to see the 140bar remap actually reach that ;]
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Today I picked up a DB revision in-tank lpfp and ordered a 145bar fprv(fuel pressure relief valve). Hoping to see the 140bar remap actually reach that ;]
Sounds more like it. :happy2:
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How far out are your Rail pressure deviations out -/+?
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Well, I did some data logs today and I now need to figure out why my specified rail pressure never requests over 125bar when it's a 130 to 140bar remap...? My actual rail pressure is having no trouble staying a bit ahead of specified, so I think that there is nothing foul with the pumps(lpfp or hpfp), but still not eliminating the lpfp possibilities as I still haven't found the proper vcds adv. meas. block for it. My Lambda is fine and running rich b/c after about 4k rpm the specified drops and the results<85%.(optimal power @ 85-95)
Also, before the runs, I turned back the boost so actual will be more in line with specified rather than leaving it behind. And, I replaced the hpfp high-pressure brass outlet fitting.
Lambda
act/spec.; 2k rpm to 7k rpm - 4th gear
1.05 1
1.03 1
0.99 0.95
0.95 0.91
0.92 0.91
0.88 0.91
0.88 0.91
0.91 0.92
0.93 0.94
0.94 0.94
0.97 0.94
0.95 0.95
0.95 0.95
0.96 0.95
0.89 0.88
0.85 0.85
0.84 0.86
0.84 0.85
0.83 0.84
0.81 0.84
0.82 0.84
0.83 0.84
0.84 0.84
0.84 0.85
0.83 0.85
0.86 0.85
0.82 0.84
0.81 0.84
0.8 0.82
0.73 0.81
0.77 0.8
0.77 0.79
0.77 0.79
0.77 0.79
0.78 0.8
0.79 0.8
rail pressure; 2k rpm to 7k rpm - 4th gear
spec./actual
69.79 68.82
73.82 77.53
77.07 79.64
80.61 81.96
83.86 84.04
87 88.34
89.67 91.63
92.42 93.83
95.1 97.31
97.19 100.16
98.64 101.62
99.8 100.76
100.61 102.36
101.37 103.2
102.1 102.51
102.59 103.62
103.11 104.56
103.69 104.71
104.13 105
104.37 105
104.45 104.54
104.47 105.26
104.47 105.99
104.47 102.35
104.47 106.97
104.47 107.83
104.47 109.08
104.47 106.39
104.47 109.45
104.47 109.85
104.99 125.31
107.51 132.55
110.83 136.15
114.83 133.67
118.62 136.24
122.41 136.24
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I'm assuming, at this time, something is causing some cut-back of sorts. I'm just unaware of what it is so far.
I still need to check the lpfp pressure to the hpfp, and I will once I find the proper vcds - amb#.
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Today I picked up a DB revision in-tank lpfp and ordered a 145bar fprv(fuel pressure relief valve). Hoping to see the 140bar remap actually reach that ;]
Should really go straight for a better intank pump. DB will still drop below 4 bar as its just not up to the job. Drop in pump isnt cheap though at 275 quid.
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So..went back out and did a run checking to see if my earlier boost adjustment to the W/G actuator put the boost more spot on.
Results are;
from 2400rpm to 6600rpm
N75............Boost (mbar)
D/C............spec./actual
97.6 2040 1100
97.6 2190 1260
97.3 2520 1420
97.3 2510 1620
97.3 2510 1840
74.9 2510 2090
53.3 2500 2340
57.3 2500 2410
51.8 2480 2430
52.5 2470 2400
56.1 2460 2360
55.3 2450 2350
49.4 2440 2330
49 2430 2300
51.4 2410 2290
47.5 2400 2300
45.5 2380 2280
49.4 2370 2290
45.5 2360 2300
47.8 2360 2310
52.2 2360 2290
48.6 2360 2290
51 2370 2310
49.8 2370 2320
50.2 2360 2310
54.5 2350 2330
52.5 2330 2310
52.9 2320 2300
53.3 2300 2320
53.3 2290 2320
52.9 2280 2310
52.9 2260 2260
52.5 2250 2280
52.2 2250 2260
52.2 2240 2250
51.8 2220 2230
51.8 2200 2220
51.4 2180 2210
51.4 2170 2210
51 2150 2190
50.2 2140 2160
50.2 2120 2150
51 2110 2130
51.8 2110 2130
51.8 2110 2130
51.8 2110 2130
51.8 2110 2130
52.2 2100 2110
52.5 2100 2110
52.9 2100 2110
53.3 2100 2110
53.7 2100 2120
53.7 2100 2140
53.7 2100 2130