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Title: Siemens 875cc Post by: cam on February 14, 2012, 03:57:13 AM Hi, has anybody correctly tuned Siemens 875cc?
KRKTE without missfires, good voltage settings? Thanks all ... Title: Re: Siemens 875cc Post by: cam on February 16, 2012, 11:52:35 AM TVUB
8V - 2,4672 10V - 1,6 12v - 1,0976 14V - 0,8 16V - 0,5984 KRKTE 0,03413 injectors working at stock fpr ... Idle seems good, ride is good and smooth without missfires and cold start is good too ... MV not readed yet. Title: Re: Siemens 875cc Post by: julex on February 16, 2012, 06:53:23 PM Please keep posting upgraded specs and if you have part# then that too. This will help somebody in the future.
Title: Re: Siemens 875cc Post by: lowrideris on February 17, 2012, 03:28:06 AM CAM - krtke is with 4bar FPR ?
im using the same injectors for 3bar FPR i set krkte 0.0427 (2000cc engine) Tvub is at 12V - 0.9573 14v - 0.800 16V - 0.720 temin and teminva - 0.600 from injector spec sheet !!! with stock 1ms temin heavy overfueling at idle. Title: Re: Siemens 875cc Post by: cam on February 17, 2012, 04:07:05 AM I have 3bar fpr what i know (not measured now).
Now trying to set injectors before i change engine with new with forged internals and big turbo, regulated fpr and many more. krkte 0,4693 i have had on 630cc. I will post injector sheet. Title: Re: Siemens 875cc Post by: cam on February 17, 2012, 04:08:52 AM datasheet
Title: Re: Siemens 875cc Post by: rob.mwpropane on February 17, 2012, 05:45:40 AM I have done calculations for 630cc at 3bar (I know its just a starting point!), and I come up with .051xx. I'm not saying anything at all, just making a note of it. If your fuel trims look good, then its good. Maybe just another example of how calculations, and real world can be very different.
Cam it seems you and I are on the same path, big turbo, forged internals. Of course you have way more experience than I, but I look forward to watching, and hopefully learning from your process. :) Title: Re: Siemens 875cc Post by: cam on February 17, 2012, 06:22:24 AM I want about 600HP :-)
I hope GT40 can be enough ... Title: Re: Siemens 875cc Post by: julex on February 17, 2012, 07:02:30 AM datasheet Thanks for posting but Jesus, another sheet with wrong values. Look at multiplier for 50.03 PSI. The show it lower than surrounding values for 44.95 and 54.96... Title: Re: Siemens 875cc Post by: cam on February 17, 2012, 09:01:37 AM Hmm, right - strange ... :-D
Have anyone good sheet? Title: Re: Siemens 875cc Post by: Gonzo on February 17, 2012, 10:46:17 AM 875 or 870?
I'll be tuning for some 870's soon. Maybe I'll share some info :) Title: Re: Siemens 875cc Post by: rob.mwpropane on February 17, 2012, 11:48:30 AM I want about 600HP :-) I hope GT40 can be enough ... 600!!!! That will be a feat!! I'm hoping for a modest 300whp with GT2860RS. But really, if she runs nice I don't care. I'll be happy if it starts when its cold, and has factory feel. Surprise a few American muscle would be nice also. I think GT40 is considered enough. I thought Tony posted correct data sheet for 630cc a while back, unless that is the sheet he posted? Title: Re: Siemens 875cc Post by: cam on February 18, 2012, 11:59:59 AM I have 875cc - Siemens FI114992.
rob: I have tuned 400HP on GT28RS, good cold starts, good warm start, slow rides and all cruising modes ;) 300HP is very conservative for this relative big turbo :) Title: Re: Siemens 875cc Post by: rob.mwpropane on February 18, 2012, 08:36:33 PM I have 875cc - Siemens FI114992. rob: I have tuned 400HP on GT28RS, good cold starts, good warm start, slow rides and all cruising modes ;) 300HP is very conservative for this relative big turbo :) You mean 400chp, which is roughly 300whp, which is ^^^ what I posted. AWD, 25% drivetrain loss yes? It's good to know about your experience. I hope I can bounce some ideas off of you when I get in trouble :D Title: Re: Siemens 875cc Post by: cam on February 19, 2012, 07:07:11 AM 382whp - measured on dyno ... I have it on 2wd not on awd car (VW Golf III).
Title: Re: Siemens 875cc Post by: rob.mwpropane on February 19, 2012, 09:58:01 AM 382whp - measured on dyno ... I have it on 2wd not on awd car (VW Golf III). Nice! I believe that engine is transverse as opposed to the longitudinal A4 engine that I am working with. Add that, and the AWD vs FWD, and I'll probably see ~ 320whp?....Or so I've read. **Sorry to anybody reading this, as this has NOTHING to do with 875cc fuel injectors. If this wasn't cam's thread to start with, I would have moved this elsewhere. Title: Re: Siemens 875cc Post by: cam on February 19, 2012, 03:58:06 PM AGU from Octavia in VW Golf III ...
It is not much off topic ... :) Today i have succesfully tuned 1.8T 132kW with 630cc for E85 (238cHP and 365cNm) with stock turbo, so i will tune my TT :) Now i need change timing belt and tensioner so tomorrow i can continue with tests with 875cc calibrations ... Title: Re: Siemens 875cc Post by: Rick on February 19, 2012, 04:09:02 PM I've done 850's but they were Bosch
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