WA Spotted & Chit Chat Thread

[xr6t ego]

Would anyone out there know of where I could pick up a half decent CB radio that's not going to cost a squillion dollars, but not also fall apart in my hand? I need it for when I'm out in the 4wd. And how much should I expect to pay?

Cheers Brendan

[tinyplums]

brendan,

I`ve got a mate that is a bit of a nerd and massively into cb radios and sh*t and has plenty of spares, can hit him up for a cheap second handy if you want. will also just ask him for recomendations:price ratio. from my limited knowledge its best to spend coin on the aireal.

(you sorted for spotlights? I have a pair I`m willing to offload for the right price )

you coming on cruise? can bring them with me for you to have a look at if you wish. (cb and/or lights that is)

Edited 15/06/10 04:54 PM by tinyplums

[Grug]

Blue Typhoon on Waneroo road (in front of the stealerships) about 7:30.

[discostig]

Ahhh...Bosch injectors are nasty, I agree with Dean you should go for a set of deka's

Nasty how?

Bloody injectors. Doing my head in! I do like Brendan's info though. Come on the next cruise so I can pick your brains more man :D

[Buf-Phoon]

Toad , thanks muchly for the effort that went into your post. It's appreciated.

Mind you I had to read it twice. So in summary there is a possibility that the scaling of squirters by some

tuners are possibly both mathematically and engineeringly incorrect and we won't know the difference.

Would it be fair to say that tuners are not all engineers and that the processes you describe are not common place ?

Good post chammp

[discostig]

I think he's saying that no matter what, that's how it happens on each injector due to it's internal mechanics?

[tab]

No you drongos...he's recommending drilled un-matched dekas. Everything else is crap.

Certainly informative. Well done Toads

[xr6t ego]

brendan,

I`ve got a mate that is a bit of a nerd and massively into cb radios and sh*t and has plenty of spares, can hit him up for a cheap second handy if you want. will also just ask him for recomendations:price ratio. from my limited knowledge its best to spend coin on the aireal.

(you sorted for spotlights? I have a pair I`m willing to offload for the right price )

you coming on cruise? can bring them with me for you to have a look at if you wish. (cb and/or lights that is)

Thanks for that mate and any info or price on a half decent/second handy would be great. It's going onto an old Vitara that I use to bash around the bush in with my son, so it doesn't have to be top of the range or be able to talk to the folk in America, but still have some quality. Any recommendations on the aerial would be great aswell.

Unfortunately I wont be able to make the cruise as I'm oncall this and next week, but I'm sure we could tee up a time that suits all, if he has a second hand one.

Cheers Brendan

Edited 16/06/10 02:24 PM by xr6t ego

[IH8TOADS]

Toad , thanks muchly for the effort that went into your post. It's appreciated.

Mind you I had to read it twice. So in summary there is a possibility that the scaling of squirters by some

tuners are possibly both mathematically and engineeringly incorrect and we won't know the difference.

Would it be fair to say that tuners are not all engineers and that the processes you describe are not common place ?

Good post chammp

Incorrect scaling is common practice. Simple logging will verify it in a tune. If you log battery voltage, injector pulsewidth, LTFT, and RPM I can pretty much tell you what your scaling is for most injectors. I know what pulsewidth most injectors require at idle RPM's so but subtracting the average logged idle pulsewidth from the pulsewidth that I know a particular injector requires then that will give you a very good idea what the battery offset value has been input against what ever battery voltage the car was logged at. But simply looking at your idle LTFT will tell you if the factory bosch battery offset vales (deadtimes) are being used.

The first 2 figures show cold starts with the deka's and factory bosch deadtime values. The LTFT is 1.0 for the first 30 seconds or so when the PCM is in open loop mode. When it switches to closed loop the PCM goes farrrrrrkkk dude...too much fuel....too much fuel.....arhhhh fark pull some out, pull it out god damn it lol. So the graphs show the fuelling at idle being 10 - 15% too rich with the factory bosch offset/deadtime values. So simple fix....lower the deadtime values from factory (I personally start with FRP data) and adjust the low slope acordingly and you will have fuel trims with your deka's as shown in the 3rd figure and the PCM is not having to do much fuel correction! Headsex was the first dude to mention this as far as I am aware.

Now it's not just the scaling that affects the deka's behaviour as it can and does behave a little funny in some of the ford strategies (not all experience this....depends on a few things). Anyway the next 4 graphs try and show this funniness! You will see that RPM, injector pulsewidth and spark advance are all related and follow some trends. The last 2 graphs show the strength of some of these trends and is represented by some more simple maths....the correlation co-efficient. Notice that the RPM v Spark has a stronger relationship than that of RPM v Pulsewidth!!!?

Who's up for another question / puzzle lol??

[Grug]

My head hurts