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Headsex

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  • Member For: 19y 5m 25d
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Notice I've also mounted the plugs for the injectors downwards.. No ugly injector wires!! (except cyl 1.. I kinda couldnt rotate it once I installed the rail because of the engine lift bracket. But im pulling the std engine out shortly so when I re-install it all, I'll fix it then)

The guage is perm installed, and yes, the fuel reg is adjustable from the top side of the engine bay, and the gauge is clearly visible. it still sits below the plenum, lucky for me, I didnt go too high in the fuel reg position on the surge tank, as it would have hit the plenum.

Strategic measuring I call it... it went something along the lines of this.. "Ahhhh I think it will be perfect ..... HERE"

Im still running 4bar base. But I've got a bit of a tune issue at the moment I'm trying to sort out with the Load and fueling.....

Yeah No.1 is the issue! Have alook how little room is left with the minitimer-uscar adaptor on the ID1000's. The wiring is only just long enough too....wiring length wouldn't be a problem if you rotated them but the adaptors might foul on the runner??

What issue are you finding with the tune & load if you don't mind me asking? Do you think your pressure has dropped when you restricted it to 4bar and then thrown the scaling out? I'm expecting this to happen when I install my turbosmart reg off the factory rail....providing the return line isn't a restiction with just the single 044. I have a feeling that I'm getting more pressure at idle and then less when fuel delivery is increased when on the move...hence the reason I'm experimenting with an adjustible reg to get the scaling correct at more load points.

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Ahh, I dont have those adaptors. I've got little loom ones (Ugly when you see them compared to yours).. So its not such a issue with clearance :D

Tuning wise.. My cars been very neglected since the gt42 went on, I've never plugged into it, only checked afr's, and well, instead of commanded like .80 lambda, ive been seeing .86 or something when I ran it up on the dyno.

When I installed the gt42, I knew the fuel system needed some love, and the second 044 was only a patch job at the time. I wasnt going to waste time on the tune until that was sorted..

So now that its done, I had done some datalogging... And I noticed something weird..

Previously with like 17psi, I was seeing load of about 2.1 as expected, and of course fueling was right.

Now with the GT42, I'm seeing like 20psi, and expected to see 2.3 load.. but no, I'm seeing 1.97 load. VERY Weird.. At least I know why my fueling is off.

Now this is with complete untouched Speed density values. Previously I've found any little trimming I've needed to do is at 6000rpm, which I've simply altered via the base fuel table.

So right now I'm starting with a fresh tune, I know I did some custom binary manipulation in this tune in regards to a 3.5bar map sensor I was playing with.. So I suspect maybe I didnt clear those settings out correctly when I put the original map sensor in place. Will know futher when I play a little more..

d.

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I see, quite unusual....I see 2.1 at ~14.8psi and at ~4650rpm when I jump on it hard. With speed density untouched, my base fuel table is only flat and precise with the ID1000 injectors.....I have to command richer at 3000 - 3500rpm with other injectors.

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Here's a bootful yesterday.. notice load peaks at 2.05, and then as rpm's rise, it goes to 1.81.. When you do a calculation of boost desired vs error, and convert to psi, you see at say 5400rpm, it had a load of 1.95, but it had 20.27psi of boost

Time (sec)	AIR_CHARGE_TEMP	BOOST_DESIRED	BOOST_ERROR	LOAD	RPM	SPARK_ADVANCE	SPKADD_AVG_ALL	TP_RELATIVE	WASTEGATE_DC
337.4 117 27.8 0.00 0.64 2170 31.4 0.000 79 0.94
337.8 117 29.0 0.00 0.67 2306 31.4 0.000 91 0.94
338.2 117 30.9 0.00 0.68 2454 31.6 0.000 92 0.93
338.5 117 31.9 0.00 0.69 2530 31.6 -0.180 92 0.87
338.9 116 32.0 0.00 0.70 2625 31.5 -0.439 92 0.73
339.2 116 32.0 0.00 0.70 2738 31.8 -0.439 96 0.59
339.6 115 32.0 0.00 0.82 2950 31.6 -0.375 343 0.77
339.9 115 32.3 13.11 1.01 3283 30.1 -0.275 584 1.00
340.3 115 33.0 24.07 1.20 3657 25.8 -0.159 584 1.00
340.6 114 34.1 17.35 1.53 4117 18.7 -0.159 584 1.00
341.0 114 36.1 5.71 1.86 4994 14.2 -0.159 584 0.65
341.3 113 38.1 -0.96 1.84 5630 12.9 -0.080 292 0.32
341.6 113 36.4 -0.28 1.67 4747 14.5 -0.159 292 0.67
342.0 112 34.0 1.30 1.87 4076 15.4 -0.318 584 0.52
342.4 111 35.4 2.13 2.05 4621 13.5 -0.318 584 0.20
342.7 111 36.7 1.31 2.00 4970 12.4 -0.318 584 0.36
343.1 110 37.1 0.56 1.99 5136 11.2 -0.318 584 0.40
343.5 109 37.7 -0.01 1.93 5379 10.5 -0.222 584 0.43
343.8 109 37.9 -1.69 1.93 5471 11.8 -0.083 584 0.41
344.1 108 37.7 -2.77 1.98 5438 11.6 -0.040 584 0.27
344.5 108 38.0 -3.28 1.95 5636 13.1 -0.040 584 0.18
344.9 108 38.4 -3.60 1.89 5876 15.1 -0.040 584 0.25
345.2 107 38.7 -2.31 1.81 5886 15.1 -0.179 584 0.29
345.6 107 38.2 -2.54 1.88 5245 19.5 -0.159 292 0.14
345.9 108 35.6 -1.72 1.08 4285 26.6 0.000 0 0.00
346.3 108 33.8 0.00 0.13 3912 30.0 0.000 0 0.00

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Yeah seems like its load calc is off. Maybe compare the closed looop PSI with the MAP and BAP calc approach. You running ethanol or someother high octane fuel I gather :-)

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