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Everything posted by Slap
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Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
Better than being missquoted and misunderstood. And how would a slight retard of the cas hurt to try. Seeing as it was moved. -
[emoji16][emoji23]. Ben go get a life.
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Glad it helped you out. *your showing signs of wankness
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I have been looking and for other stuff too. I believe it was a tunning forrum. It was 5 years ago when I was goin nuts trying to figure a way to analogue tune my car with the dodgy safc. Before I read that I just believed the voltage readings were the figure the ecu used. I will do my best to find it but reality is. Saying 'wtf' isn't a real post or help or discussion. As I stated in the high jacked thread you guys were making me believe. Not vice versa. All I did was attempt to help someone and have most my posts miss quoted or misunderstood. If it was understood I would have reasonable responses posted back to me. I see some attempts at this without the extra expanded thought. Like the impacts of the 'explained' vs what I said , and yes maybe I am wrong on some levels or maybe not why I started the thread. I actually see why no one comes to sau anymore unless they desperatley need help. It's like a farkin clergy. Can't say one thing wrong or in the wrong way or ya get molested by the elders. Ahahahahahahahahaha. Common good discussion. Not prove it. I wanna hear from people that have analogue tunned there car by fooling. Yes everyone with a pc that tinkers too.
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Continuing on from a high jacked thread. Remember this is a forrum not a wiki fact even though I'd love any responses with some hard cold facts. How do the knock sensors work exactly with the ecu. I know they are a Mic type sensor , the ecu can't here sound though, so it converts it to frequency (voltage). I am sure I've read about as well as witnessed with my rb20det the ecu changes knock voltage resistance in 9rder to detect knock levels. I had my car on 98 octane knock voltage was 2.4v. Put in e85 (I am flexi o2 sensor setup) Knock voltage takes steps over time at idle to 2.1 What I read is that it does this because it gets minimal knock counts and increases the Mic power by lowering the voltage resistance. In a wave graph form 2.4 up then down , a listening spike of knock of .0333 of a volt or what ever miniscule amount will be smaller in that (2.4) than in the (2.1). Making it easier to recognise knock. Ok all you cheeky buggers that wanna tare at me as if I changed a bible. Your turn to swing [emoji8][emoji23]
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Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
Look we have high jacked this thread far to much. I would love to open a discussion thread on the ecu and it's workings. I understand you guys tell me you tune them and yes you are firm on what you witness. So am I. I move to open a new thread on the topic ecu capabilities. And would love not only to read peoples experiences but facts printed and backed up. ORIGINALY I SHOULD HAVE ONLY POSTED 'just try retarding the cas a lil' I'm not trying to make you all believe me or get missinformation out there. I'm sharing my experience and was trying to help a skidder out. You guys want me to believe so let's roll onto the new thread. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
Why on a timming light at idle are the rb jumpy then. They move forward and backward with it. They also monitor knock. I have witnessed knock voltage resistance to get lower and lower and also raise at idle depending on both fuel type and timming. Also you understand the idle valve controls airflow so really you just explained how the airflow part of the idle is controlled. Yes they are set to a designated amount but they also add and subtract at idle. I have had my 32 on a flex sensor for years using a stock ecu and a safc as an fcd. The safc has to do with reducing airflow that advances timing. Just like your idle valve it will impact on the ecu. In an earlier post i should have corrected Myself as I ment rb experience not rb25 experience but my phone is great for doin that to me and I cbf. I would love to see a fact sheet can any one source one. I'm not going to all of a sudden stop and believe you. Ecu can advance timming. Less air flow at specified load advances... this being idle atm. . 15 at the crank. Knock voltage resistance targets as low as possible. Mine would use steps in .1v (2.4/2.1) If it detected no knock it lowers the resistance to detect it and takes steps accordingly. Why do people nistune if they were not sophisticated enough. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
[emoji35][emoji2959] -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
omg I'm over the auto correct from my phone. Please read knowing this. I think I need 20 edits ahaha. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
Wich if your car is used of 95 octaneAnd you run 98. Less knock more advance less injector. Until knock -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
When I say fuel used I mean what type of fuel. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
The the narrow band o2 will feed the ecu the parrameters it sees and the ecu will use the maf and knock inputs too. To determine if it needs a fuel trim or timming trim.I know a bit about safc and if what you say is true it wouldn't lower the idle no matter what ...only advance timing on a skyline. But it does as it reduces airflow and it will concurrently raise timming as that is what a skyline ecu does with less airflow. The ecu has enough self learn features to fix small errors outside of the load map. Nearly all fuel has ethanol now. Especially higher octane fuels. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
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Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
Also an aggressive idle can be from Over advance. Lumpy if under advance. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
This is a forrum. And discussion is great. But when you want to prove someone wrong do it correctly and pull up some fact sheets -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
Don't manipulate what I say. [emoji35] -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
At idle the car will advance itself from 15 base at the crank. That is what I'm saying I never said set it to 30. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
I never said that . Get some glasses. -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
No I believe you are wrong in a way. Im sure that is the timming added by the ecu. Pull the light out and compare what the ecu says to the light. The ecu assumes that it is at 15. But doesn't hesitate to change it if it can change it whilst staying within parrameter of the knock and the air fuel ratios. If it's still on one side of the parrameter it will continue that way until it has passed it and then head back trying to narrow in on it's best idle that it can provide. People use cam gears all the time with stock ecu. That will change cas. The impacts of the car changing can be within reason ironed out by the ecu while it isn't using load maps. But the load maps won't be altered and that's where people adjust the cas to correct load maps and let the ecu fix low load and idle. It is not hard to check if that is all that is wrong. Retard the cas a bit and check. If you over advance and drive it is way worse if than retard. You prove it to me and I will believe you gtsboy show me a document or something. Even if I'm wrong how hard is it to check! -
Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
It's 30 with ignition added form the ecu I'm certain. So as a total. I'll scratch around but I'm sure. Everything I can remember about the stock ecu and it's hunting for perfection is a bit vague. Base case trimming 15-17 Ecu adds about 10 -13 Depending on fuel used as the ignition will add as much advance as it can at idle going back and forth adding and subtracting timming and fuel in accordance to air fuel ratios and knock voltage. Maybe I'm wrong ... time to dig. -
I believe they get auctioned starting low.
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R32 GTR (USA-Alabama) KG1 1990
Slap replied to Dewayne2121's topic in Members Cars, Project Overhauls & Restorations
Don't ever sell it mate . They are getting rare as hens teeth. The prices are only going up because of this. I used to see heaps of 32s being sold then drifting became massive and now there's barely any and none cheap. Keep on lovin it. Bet you spent that house you bought. Ahaha -
Canberra and when my funds are low [emoji58]
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Your car looks mint. Don't do to much unless you plan on getting another one that nice. once you start modding it's hard to stop ahaha. 1000cc way to big. Fuel pump and it's wiring and lines first then injectors. 400 hp is about topping a 20det so you only need the injectors to be as big as gtr stickies 444cc. Front mount intercooler. (Return flow to avoid chassis holes) High flow rb25 turbo Zorst setup Pod filter. Bleed valve Aftermarket ecu That should be enough for fun Start with a bleed valve and don't boost over 12 psi or you will break the zorst wheel
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Low ignition timing at idle 25DET NEO
Slap replied to spudtatoe's topic in Engines & Forced Induction
Sounds like the reading is actually the Timming added by the ecu. Wich would suggest to much manual advance on the cas. I believe the ecu normaly adds 10 -15 at idle so it stays at about 30 on idle.... according to my rb25 experiences. A slight rough idle can happen from an exhaust leak prior exhaust o2 sensor. The standard ecu on an rb always hunts for the best spot. The more air tight and fresh your plant the less noticeable the hunting. I would try retarding the car 5-12