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Title: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: Pendrak on July 04, 2023, 06:33:08 AM Hello,
Does anyone know what maximum rail pressure stock k03/k04 engines injectors can handle? When they will stop opening due to too high pressure? Im chasing some issues with my fuel system on a 2.0 tfsi BWA + 200 bar rail sensor + 190 bar rail valve. Currently im requesting 165 bar of rail pressure, my actual pressure follows it, but as soon as I get past let's say 145 bar Im hitting a wall with fueling: - Lambda goes to 1.99 - Injection time get's longer - Lambda correction +25% - Engine stalls completly So Im assuming either my injector's are not opening at all, or Im having some issues with calibrating my rail valve (I don't know what it could be). Are you guys adjusting anything specific regarding that upgraded rail valve besides normal stuff like: KFPRSOLHKS KFPRSOLHMM KFPRSOLHOM KFPRSOLKH KFPRSOLOFF KFPRSOLSCH KLLFPRSG KLPRMAX VHDP RQUAHDPK SKHDPMX PGBDVHDO KLPROV PRNL1 Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: Dande on July 04, 2023, 10:49:19 AM 1. Did you also edit KLPRAIL?
2. Did you replace the hpfp internals? 3. Why did you edit SKHDPMX? Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: vanrhj on July 05, 2023, 05:20:50 AM Check your injectors. Can be a faulty injector.
Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: crackerx on July 06, 2023, 01:48:14 AM Why would you run a BWA injector with 165bar?
You can use many upgraded injectors up to 600PS with 135-140bar. Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: DVpl on September 11, 2024, 11:17:08 PM Hello, Does anyone know what maximum rail pressure stock k03/k04 engines injectors can handle? When they will stop opening due to too high pressure? Im chasing some issues with my fuel system on a 2.0 tfsi BWA + 200 bar rail sensor + 190 bar rail valve. Currently im requesting 165 bar of rail pressure, my actual pressure follows it, but as soon as I get past let's say 145 bar Im hitting a wall with fueling: - Lambda goes to 1.99 - Injection time get's longer - Lambda correction +25% - Engine stalls completly So Im assuming either my injector's are not opening at all, or Im having some issues with calibrating my rail valve (I don't know what it could be). Are you guys adjusting anything specific regarding that upgraded rail valve besides normal stuff like: KFPRSOLHKS KFPRSOLHMM KFPRSOLHOM KFPRSOLKH KFPRSOLOFF KFPRSOLSCH KLLFPRSG KLPRMAX VHDP RQUAHDPK SKHDPMX PGBDVHDO KLPROV PRNL1 Hi guys, someone solved it this problem ? I have same problem with similar HW, 2.0 tfsi BWA + 200 bar rail sensor + 165 bar rail valve + RE3 injectors + VIS hpfp and more. All maps recalibrated and same problem, until 140bar clear run and over 145bar lambda goes to 1.99 and lambda correction +25%, engine jerks and not run up. Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: Dande on September 12, 2024, 11:05:07 AM (mistake)
Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: Dande on September 12, 2024, 11:09:11 AM I always change more maps. For example..
165 rail valve: PRMXNL 19 bar PRNOESAB 20 bar and more... Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: nikotlb on October 09, 2024, 02:43:00 AM I always change more maps. For example.. I'm having a similiar issue, would you give me a hand ?165 rail valve: PRMXNL 19 bar PRNOESAB 20 bar and more... Title: Re: MED9 2.0 TFSI - stock injectors max rail pressure / rail valve question Post by: IamwhoIam on October 09, 2024, 03:32:44 AM It's either your injectors going static (seen this before but not at 145 bar) or the PRV going wide open and leaving the injector right in front of it with no fuel.
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