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« on: September 28, 2014, 06:32:57 AM »
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Is this possible? I am tuning my fueling and i got it spot on. Was running lean Before, Now: Idle -1% and PT 0% WOT is following requsted 11.8ish on E85 I have dialed in boost pretty well - not done 100% yet. I will bump it up a noch later on. Problem i have seen as i dialed in my fueling - the richer it got - more ignition timing retardation i got as well. First i had one knock. What i did is Reduced timing 0.75deg at that load/rpm. It got even worse. I got two knocks with that timing and going from 12.4afr to 11.8. It feels to me that i need more not less timing to battle ignition retard at those loads??? Can this be right??  |
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« Reply #1 on: September 28, 2014, 06:36:09 AM »
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Latest CSV as well
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ddillenger
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« Reply #2 on: September 28, 2014, 09:20:30 AM »
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What's your rationale for running that much timing? How do you know how much is too much on E85? Have you been on a dyno to establish where you are in regards to MBT?
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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DDillenger84(at)gmail(dot)com
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Lost
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« Reply #3 on: September 28, 2014, 09:43:07 AM »
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What's your rationale for running that much timing? How do you know how much is too much on E85? Have you been on a dyno to establish where you are in regards to MBT?
No, no dyno, but monitoring fats. Timing on this Engine is retarded as by now 2.25deg compared to my old one, also is load (boost) and running richer. It is also slower. I never had any retardation on old Engine even higher boost, higher timing, running much leaner no ign, retardation. I have a couple of friends with same hardware running e85 on RS4s with about 5-7deg more timing at peak load. Some insane timing??? As i said when i was running 12 -12.3 afr with the same timing earlier today - there was less retardation. Comming down on my req 11,8. 11-6 on some Points i got more retardation as you see. Well, i will lean it up to 12.2 again and see whats happening. |
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« Reply #4 on: September 28, 2014, 09:53:37 AM »
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 This is a log from yesterday. Same load, timing higher .75 deg at 3500rpm and also higher IATS about 4-5degC, KRKTE really low AFR - 12.8- 13.5 Almoust No cerrection??? |
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« Last Edit: September 28, 2014, 10:00:42 AM by Mocke »
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ddillenger
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« Reply #5 on: September 28, 2014, 10:02:00 AM »
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Why are you targeting that AFR on E85 though? I assume your wideband is gas scale?
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« Last Edit: September 28, 2014, 10:44:37 AM by ddillenger »
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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DDillenger84(at)gmail(dot)com
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Lost
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« Reply #6 on: September 28, 2014, 10:39:13 AM »
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YES, it is gas scale.
11.9 AFR. - 0.82 on e85 is not rich?
What do you aim for???
It is One of two things as i see it:
It needs more timing to properly ignite it,or this new build forged engine is sensitive too knock.
I don't believe it is solution nr 2.
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ddillenger
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« Reply #7 on: September 28, 2014, 10:47:56 AM »
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YES, it is gas scale.
11.9 AFR. - 0.82 on e85 is not rich?
What do you aim for???
It is One of two things as i see it:
It needs more timing to properly ignite it,or this new build forged engine is sensitive too knock.
I don't believe it is solution nr 2.
You really should get some dyno time Kemal. Bottom line, at this point you just don't know what will work best. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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phila_dot
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« Reply #8 on: September 28, 2014, 10:50:29 AM »
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Not trying to discourage you, but you should really stop and read a few books at least before you proceed.
What is your static CR?
If possible, I encourage you to get educated and get your feet wet tuning petrol first.
Again, I'm not trying to be negative, but your posts clearly illustrate that have some learning to do before you take on something like this.
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« Reply #9 on: September 28, 2014, 10:59:49 AM »
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You really should get some dyno time Kemal. Bottom line, at this point you just don't know what will work best.
I understand, but i am sure you guys do not have dyno at your disposal all the time tuning 10 cars a day, maybe i am wrong - you do? Which way do you take if no dyno? In that case i will take the safe way. Btw if you Think this timing was high. This is my friends RS4, same car - same hardware. E85 tuned by the very respectable tuner - NO dyno  |
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« Reply #10 on: September 28, 2014, 11:02:46 AM »
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Not trying to discourage you, but you should really stop and read a few books at least before you proceed.
What is your static CR?
If possible, I encourage you to get educated and get your feet wet tuning petrol first.
Again, I'm not trying to be negative, but your posts clearly illustrate that have some learning to do before you take on something like this.
Thank you Philla. It is Ok. As a matter of fact a did read a few of those books recomended here. What is the approach you would take? |
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« Reply #11 on: September 28, 2014, 09:31:17 PM »
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Not trying to discourage you, but you should really stop and read a few books at least before you proceed.
What is your static CR?
If possible, I encourage you to get educated and get your feet wet tuning petrol first.
Again, I'm not trying to be negative, but your posts clearly illustrate that have some learning to do before you take on something like this.
Just talked to the shop owner that build my block. Forged Diamond pistons 9:1 CR with OEM RS heads. Oem RS is 9:1 This tells me CR should not be limiter here. |
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« Last Edit: September 29, 2014, 12:48:43 AM by Mocke »
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phila_dot
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« Reply #12 on: September 30, 2014, 10:01:20 AM »
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I recommend that you tune the car on petrol first to gain some experience.
Get things figured out, find a system that works for you. Then move onto E85 after you've put together a good example.
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« Reply #13 on: September 30, 2014, 01:48:14 PM »
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I recommend that you tune the car on petrol first to gain some experience.
Get things figured out, find a system that works for you. Then move onto E85 after you've put together a good example.
Thank you for the advice, but that will not happen. You can choose to advise me on the Mather, or not. Anyway I appreciate it. Anyway, my approach is to turn timing really low, as I have everything else where I want it. This should, make car loose significant amount of power. Then log it and whach my TQ and fats. Bump it 0.75 per load cell and logg. As long it is making power I will advance. Once the gaining start to slow down, back it up 1.5 deg. That should be fine. |
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vwaudiguy
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« Reply #14 on: September 30, 2014, 08:10:50 PM »
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Can you trust the original timing correction detection now that the pistons have been changed?
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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