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Jet's Tuning (Oh No)

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Yeh most definately how safe is the point !

Is it definately common practice to place an engine in knock condition to know where that point of timing is ?

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With 98 I think you would need it to knock to know where the limit is. This is where equipment like the knock box are handy. I think Mick uses a different type of sensor..

e85 you just keep going until power figure drops.

that's what I have learnt lol

Edited by Paulie2256

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There are two parts to tuning.

1. Knowing what timing and airfuel ratios you need to get to

2. Knowing how to make software changes to get to the desired timing and airfuel ratios.

Trying to learn (1) with HpTuners or any other non live tuning is way too cumbersomb.

The best way to learn (1) is with live tuning hardware/software as you can quickly make changes and learn alot quicker as to what is going on.

The first thing you need is a wideband on your car and observe where the fuel ratios should be.

Courses are OK but I think reading whatever you can get on the subject is where I gained most of my knowledge.

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there is no magic number that suits all cars when timing is involved, as mentioned already, 2 similar cars may require different spark values, which is why one reason generic tunes are not a good idea.

As far as a safe number that's an individual thing and engine design can have an affect on this as well, but I have to have a laugh when I see guys posting on here about there tuner is that good that there was not a sign of ping during the whole tuning process, great but how close to the knock threshold are they, you do not know this until you get it to ping lightly and then back away from that point.

Hopefully your tafe has a wolf or microtech etc for you guys to play with, these offer live tuning but are very very basic compared to the late model factory ecu and will be easier to learn on before venturing onto more complex systems

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Actualy tbh im amazed at how knowledageable tranny is and how much he reads... only about this kind of stuff mind u.. anyhing else hes all pictures lol...

I think its great that hes taking on something hes passionate about...

One day he might be a professional tuner who knows...

Then I can have a tuner husband and a tuner boyfriend

Cozmeandmickhaveathinggoing

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there is no magic number that suits all cars when timing is involved, as mentioned already, 2 similar cars may require different spark values, which is why one reason generic tunes are not a good idea.

As far as a safe number that's an individual thing and engine design can have an affect on this as well, but I have to have a laugh when I see guys posting on here about there tuner is that good that there was not a sign of ping during the whole tuning process, great but how close to the knock threshold are they, you do not know this until you get it to ping lightly and then back away from that point.

Hopefully your tafe has a wolf or microtech etc for you guys to play with, these offer live tuning but are very very basic compared to the late model factory ecu and will be easier to learn on before venturing onto more complex systems

I get the feeling that your talking about me Mick. Is it possible that some tuners are better, and more experienced than others. Therefore having a fair idea of thresholds, thus not having to venture into undesirable conditions ?

Cheers

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talking about a few actually, but unless a tuner has a crystal ball, then no, nobody knows until that limit has been reached, they can guess, but as mentioned earlier all cars are different.

Many people rate their tuner on how much power the car makes, to be honest making power is the easy part, get the afr where you want it, get the boost where you want it and then feed spark to it anyone can do that, there's no magic, driveability and manners combined with power, show more about the tuners skill than the power output.

I see all sorts of dyno charts posted here and elsewhere, many look very good but again do not tell the full story, some look very average but the customer is happy anyway.

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Iam all ears and really want to disreguard what I think I know for what I can prove and learn

Earlie days and ill up date as I learn for anyone else who maybe intrested

All I know is that they have autronic sm4 units and its all real time stuff, the hot tip is its easier to tune on the engine dyno and progress from there

The teacher has already said partial throttle conditions is where we will spend a good amount of time so looking forward !!

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My brief to RDP was safety as the priority. Now, "if we put 9 degrees in at 4000rpm with your mods. We would have seen pinging. that's what many years of dyno tuning 100's of XR6 Turbo's will tell you. Now when you have done enough of these things you will learn where the thresholds are". But seeking to always hit the ping threshold, I believe your working on the edge. Which could end badly. So no Mick, I don't agree with your philosophy at all.


Cheers

Edited by Dagabond

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My brief to RDP was safety as the priority. Now, "if we put 9 degrees in at 4000rpm with your mods. We would have seen pinging. that's what many years of dyno tuning 100's of XR6 Turbo's will tell you. Now when you have done enough of these things you will learn where the thresholds are". But seeking to always hit the ping threshold, I believe your working on the edge. Which could end badly. So no Mick, I don't agree with your philosophy at all.

Cheers

most fairytales start with "once upon a time" I think that should be included somewhere in your post

have a nice day.

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Impellor, the car can be made to knock safely to find the limit. It's not like a light switch. There's varying amounts and therefore severity.

Tuners can easily make an engine knock ever so slightly that the only way to detect it is with dedicated gear built for the job.

Someone who's tuned 100's of XR6T's would know the knock limit is a fairly big window. I'd rather have a tuner make my engine knock the tiniest amount than take a guess, educated or otherwise.

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most fairytales start with "once upon a time" I think that should be included somewhere in your post

have a nice day.

At the end of the day Mick, everyone can rationalise their individual styles and techniques. I am simply conveying what I was told. So this isn't at shot at me, but a fellow SCT tuner like yourself. Whom incidently has never said a bad word about any other tuner. And I will say this, I'm extremely happy with my tune, and have great faith in their work.I guess time will prove you right or wrong?

Cheers

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