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Title: KRKTE and TVUB Confirmation - Siemens Deka 80lb (875cc) Post by: PaulB on September 24, 2018, 07:13:17 AM Hello!
I would like to make a confirmation for KRKTE and TVUB calculation .. Engine : 1.8T 20V Displacement : 1984cc (stroked engine ) KRKTE : 0.03905238 ( aprox ) TVUB : Is the FNPW_OFFSET on the TVUB.jpg file? ::) Title: Re: KRKTE and TVUB Confirmation - Siemens Deka 80lb (875cc) Post by: eg4 on September 26, 2018, 02:16:47 AM you can use this calculator for krkte http://nefariousmotorsports.com/forum/index.php?topic=4021.0 and fnpw_offset is your tvub. But it depends from the fuelpressure
Title: Re: KRKTE and TVUB Confirmation - Siemens Deka 80lb (875cc) Post by: nyet on September 26, 2018, 10:03:30 AM Note that both offset and krkte depend on pressure.
Title: Re: KRKTE and TVUB Confirmation - Siemens Deka 80lb (875cc) Post by: PaulB on September 27, 2018, 07:16:13 AM Hello!!
Thank you ! :) I will keep the stock 3bar frp! So i suppose the TVUB will be ok.. Also , do i need to modify the Volt axis on the TVUB map ,so they correspond with the siemens deka ''fnpw_offset'' Values? Title: Re: KRKTE and TVUB Confirmation - Siemens Deka 80lb (875cc) Post by: nyet on September 27, 2018, 07:56:42 AM I will keep the stock 3bar frp! So i suppose the TVUB will be ok.. Note that not all FPRs are 3bar stock, 3 bar is only commonly used as a reference pressure for fuel injectors. Quote Also , do i need to modify the Volt axis on the TVUB map ,so they correspond with the siemens deka ''fnpw_offset'' Values? Yes, or re-interpolate. Also, like flow, TVUB also more or less scales linearly (albeit not quite) with the square root of fuel pressure (as a very rough approximation). Some injector datasheets come with a method for approximating TVUB with respect to voltage and pressure, some have complete charts. eg. for ev14: https://nyet.org/cars/info/ev14-latency/ Title: Re: KRKTE and TVUB Confirmation - Siemens Deka 80lb (875cc) Post by: PaulB on September 29, 2018, 11:42:02 AM I have the stock 3bar frp , thats for sure..
I Think i will start with the mentioned values and see the STFT.. maybe i will make FKKVS and HFM 1's .. No? Title: Re: KRKTE and TVUB Confirmation - Siemens Deka 80lb (875cc) Post by: nyet on September 29, 2018, 12:57:29 PM I have the stock 3bar frp , thats for sure.. I Think i will start with the mentioned values and see the STFT.. maybe i will make FKKVS and HFM 1's .. No? More than one way to skin a cat, but in general, you can all ones FKKVS to start with, and if possible start with a known good stock HFM that matches your MAF and intake setup. If you have a cone filter or any other CAI setup, all bets are off. |