Pages: [1]
Author Topic: Bosch 0280155892 Injector TVUB  (Read 736 times)
willemml
Newbie
*

Karma: +0/-0
Offline Offline

Posts: 2


« on: January 31, 2025, 11:00:32 PM »

I've been reading through the forums and S4wiki tuning guides and just getting started trying to write a tune. I am trying to get a head start on learning how this works by reading through the community tune threads and the s4wiki page while I wait for the spare ECU I ordered to arrive. My current challenge is figuring out the KRKTE and TVUB for the injectors in my car.

I have Bosch 0280155892 (from the TT225) in my AMB 1.8t (2003 A4).

I am pretty sure I have figured out KRKTE

Info from https://www.injectorplanet.com/collections/bosch-fuel-injectors/products/bosch-0280155892-volkswagen-06a906031j-1

That lists injector flow as 374.1 cc/min @ 3bar so I used https://deatschwerks.com/en-ca/pages/fuel-injector-calculator to get the flow for 4bar (431cc/min)
KRKTE = 50.2624*(1.781/4)/(431*0.684) ‎ = 0.075913
Does this seem like a good starting value? Stock is 0.1039 with the 263.8cc/min injectors (taken from the community stage 1 thread for 8E0909518AK)
If I do the same calculations for the stock injectors I wind up with 50.2624*(1.781/4)/(304*0.684) ‎ = 0.10763 which is close ish...

Now I can't find the TVUB values, and I can't seem to find any datasheets for these injectors, if anyone knows where I can find these please let me know.
Or maybe given I can't find a datasheet should I just try to get the TVUB values empirically via idle STFTs? I am just looking for a starting point given I can't flash the car yet.

« Last Edit: February 02, 2025, 09:22:46 AM by willemml » Logged
willemml
Newbie
*

Karma: +0/-0
Offline Offline

Posts: 2


« Reply #1 on: January 31, 2025, 11:03:21 PM »

Just realized I posted this in Noob Guides and FAQs instead of Noob Questions... Whoops.
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Page created in 0.018 seconds with 17 queries. (Pretty URLs adds 0s, 0q)