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julex
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« Reply #195 on: July 19, 2013, 12:20:35 PM »
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Calibration sheet supplied with my ford racing injectors (bearing the 117 suffix)  That's an old one with obvious mistakes on it, as discussed in prior posts. |
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ddillenger
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« Reply #196 on: July 19, 2013, 12:25:47 PM »
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I understand, but I thought it relevant.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
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phila_dot
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« Reply #197 on: July 19, 2013, 12:37:40 PM »
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It is for 0280158117 which is what everyone is running.
Ok, all modified injectors are not created equally either way. That's an old one with obvious mistakes on it, as discussed in prior posts.
That cal sheet is from Ford Racing... |
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ddillenger
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« Reply #198 on: July 19, 2013, 12:41:47 PM »
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Ok, all modified injectors are not created equally either way.
That cal sheet is from Ford Racing...
That's the sheet that came with my injectors. I just want to make it clear that I'm not saying it's accurate, but I haven't seen it posted anywhere, so I'm just adding to the dataset. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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julex
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« Reply #199 on: July 19, 2013, 12:44:46 PM »
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And  ? The new link I provided is the same exact site the sheet you posted was pulled out, a long time ago (by me) and posted in this thread. If you look at the values, I just spot checked 43.5psi (3bar), then they match to within 0.01ms... Except that the new one is more convenient since the values are already provided for different pressures and more importantly, the old sheet has multiplier values that don't make sense. Let's also don't forget that they finally posted TVUB for different flow ev14s, something you were on your own to date. Sure injectors are not all equal but if you take the same base part, and modify to the same final flow, chances are that two different companies doing that will get an injector with very similar TVUB. |
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« Last Edit: July 19, 2013, 12:48:35 PM by julex »
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nyet
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« Reply #200 on: July 19, 2013, 12:58:34 PM »
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My only problem with those new sheets is that they don't go down to 7v.. and i hate guessing |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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julex
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« Reply #201 on: July 19, 2013, 01:02:01 PM »
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My only problem with those new sheets is that they don't go down to 7v.. and i hate guessing  I know. It is nice to know that you can still activate the injector long after the ECU already turned off. |
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hipeka
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« Reply #202 on: July 19, 2013, 02:07:22 PM »
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You must edit KFBAKL and KFVAKL for these injectors. Try multiplying both by 1.5 as a start, and then fine tune it.
I try to tune those injectors to Audi A4 1.8t quattro -01. Ecu is 4B0906018CG-0261207215-360306. Stock values from KFBAKL are around 1,5 at 90C and 3000rpm, KFVAKL in same spot 0,92. If i have read my logs right those stock values are too high. |
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dantt
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« Reply #204 on: September 27, 2013, 06:52:38 AM »
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Assume this ( http://www.boschdealer.com/specsheets/0280158117cs.jpg) to be accurate and we already know a 4-bar pressure regulator is 58.02 psi. Therefore FNPW_OFFCOMP has a theoretical value of: 1.1852. Using the same decimal accuracy as the calibration sheet: 1.1852 = 1.2179+(58.02-54.96)*(1.1638-1.2179)/(60.03-54.96) In MATLAB I entered the FNPW_OFFSET values and fit a shape-preserving spline. You can see the attached graph below to view the curve-fit. Interpolated output from the curve below is naturally multiplied by 1.1852. Volts MS 7.04 3.865 10.07 1.678 12.04 1.227 14.08 0.926 17.88 0.779 Now for KRKTE, the theoretical value is pretty simple to calculate. KRKTE = 50.2624*(Liters/Cylinder)/(operating flow rate in cc/min * .684 constant ) KRKTE = 50.2624 * 0.4452 / ( 615 * .684) = .0532 These are the values I'm going to start my K04 tuning with using the rinse/repeat process after I get a wideband installed (based on the stock m-box). Could somebody please verify what I've done above? Thanks guys. hi ! i want replace my 3bar fuel regolator pressure on my tt 225 with one 4bar, but i don't understand how modify TVUB . can you help me? can you explain to me again? |
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julex
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« Reply #205 on: September 27, 2013, 07:57:03 AM »
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hi !
i want replace my 3bar fuel regolator pressure on my tt 225 with one 4bar, but i don't understand how modify TVUB . can you help me? can you explain to me again?
The TVUB values raise as the fuel rail pressure goes up since the injector must work against more force to open the orifice. If you have a flow sheet for the injector, the outright values for TVUB might be given in there or a multiplier value that you need to use for basic (usually 3bar) TVUB to obtain new TVUB for a given pressure you're intereseted in. What injectors do you have, stock ones? |
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dantt
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« Reply #206 on: September 27, 2013, 08:11:22 AM »
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The TVUB values raise as the fuel rail pressure goes up since the injector must work against more force to open the orifice. If you have a flow sheet for the injector, the outright values for TVUB might be given in there or a multiplier value that you need to use for basic (usually 3bar) TVUB to obtain new TVUB for a given pressure you're intereseted in.
What injectors do you have, stock ones?
yes stock ones 386cc my tvub is 7,9552 9,9968 11,9680 14,0096 1,7408 1,7408 1,1392 0,8096 0,5984 0,4416 |
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« Last Edit: September 30, 2013, 01:25:09 AM by dantt »
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dantt
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« Reply #207 on: September 30, 2013, 03:18:08 AM »
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to adjust TVUB, is sufficient to divide TVUB original values by 1.1852 (value interpolated from http://www.boschdealer.com/specsheets/0280158117cs.jpg )? i have original injectors and I would put a fuel pressure regulator to 4bar ( the original one is 3bar ) thanks |
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« Last Edit: September 30, 2013, 04:20:15 AM by dantt »
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julex
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« Reply #208 on: September 30, 2013, 06:02:38 AM »
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Multiply if anything. The more pressure, the longer the injector opens since it has to work against more pressure. |
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dantt
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« Reply #209 on: September 30, 2013, 08:29:38 AM »
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probably tvub is fnpw_offset ( voltage offset ) / FNPW_OFFCOMP ( multiplier )
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