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Title: INJECTORS 0280156061(AUM injectors) at 4bar FPR Post by: Andrey03 on March 01, 2026, 03:21:01 AM Hi to all! can someone help me with actual tvub and krkte for 0280156061(AUM injectors) at 4bar FPR, or what else i need to modify?
Big thanks! ;) Audi A3 1.8T AUM 150Hp K04-001 IC Sytec Fuel Pump 4 bar FPR ME7.5 Title: Re: INJECTORS 0280156061(AUM injectors) at 4bar FPR Post by: grayjay on March 01, 2026, 01:42:57 PM Per;
https://www.injectorplanet.com/products/bosch-0280156061-volkswagen-06a906031ba Those injectors should flow 301.8cc at 3 bar. per flowrate calculator at; https://raceworks.com.au/calculators/injector-flow-vs-fuel-pressure/ those same injectors should flow 348cc/min at 4 bar now, plug that into one of the several krkte calculators discussed in threads to get new krkte at the higher FP flowrate https://nefariousmotorsports.com/forum/index.php?topic=21517.msg158463#msg158463 or http://nefariousmotorsports.com/forum/index.php?topic=4021.0 TVUB is a measure of the injector opening latency (time) due to variation inf system voltage, it does not change with a change of fuel pressure. Whatever TVUB you had previously (or from bosch data sheet) should be same at any fuel pressure. TEMIN is one other variable that you might look at if changing fuel pressure or injectors. The effects might not even be noticeable when driving but if you want everything perfect then scale it down too. KVB is another you might want to re-scale if you want the dash fuel consumption and miles to empty displays completely accurate but it has not effect on engine operation. Title: Re: INJECTORS 0280156061(AUM injectors) at 4bar FPR Post by: Andrey03 on March 02, 2026, 11:57:12 AM Per; https://www.injectorplanet.com/products/bosch-0280156061-volkswagen-06a906031ba Those injectors should flow 301.8cc at 3 bar. per flowrate calculator at; https://raceworks.com.au/calculators/injector-flow-vs-fuel-pressure/ those same injectors should flow 348cc/min at 4 bar now, plug that into one of the several krkte calculators discussed in threads to get new krkte at the higher FP flowrate https://nefariousmotorsports.com/forum/index.php?topic=21517.msg158463#msg158463 or http://nefariousmotorsports.com/forum/index.php?topic=4021.0 TVUB is a measure of the injector opening latency (time) due to variation inf system voltage, it does not change with a change of fuel pressure. Whatever TVUB you had previously (or from bosch data sheet) should be same at any fuel pressure. TEMIN is one other variable that you might look at if changing fuel pressure or injectors. The effects might not even be noticeable when driving but if you want everything perfect then scale it down too. KVB is another you might want to re-scale if you want the dash fuel consumption and miles to empty displays completely accurate but it has not effect on engine operation. 0.077? Title: Re: INJECTORS 0280156061(AUM injectors) at 4bar FPR Post by: fknbrkn on March 02, 2026, 05:50:53 PM 0.085 for krkte
348 kvb thats all you need |