OK, I gotta ask

Reply Subscribe

Thread Tools

Search this Thread

Jun 11, 2004 | 08:40 PM

#16

jcrice

Thread Starter

Mountain Pass

Joined: Jan 2003

Posts: 161

Likes: 1

Quote:

Originally Posted by daimon1054

All the talk of reset the computer comes from people who do not understand the technology...

That's exactly what I believed (and still do) to be true, but I've read so many posts from so many people who think it helps...

Do you do this for a living?

Jun 11, 2004 | 09:27 PM

#17

daimon1054

Posting Guru

Joined: Jul 2002

Posts: 1,372

Likes: 0

From: Broussard USA

I write computer programs and develope technology for use in oilfiled applications, I build circuit boards and write code for the e-proms we use in some of our tools so I have a little background in computers.

A few years back when computers started making their way into cars I wanted to know how they worked so I spent some time reserching them. I used to have some of the original code for the 87 mustang but that is long gone now.

Jun 11, 2004 | 09:57 PM

#18

68 351 bronc

Elder User

Joined: Jan 2004

Posts: 920

Likes: 2

From: Colville

Damion, I have long understood that higher octane when not needed due to lower compression and factory retarted base timing would only hinder combustion.
What I don't under stand is that even with Knock sensors and coil over plug ignition that in theory should sense pre. det. and retard timing on the ofending cylinder, how does knock occur and why not program a theory where max timing is available in a warm engine when no knock is sensed with high octane fuel?

Jun 11, 2004 | 10:08 PM

#19

RDRAY

Junior User

Joined: Apr 2004

Posts: 85

Likes: 0

From: Longview, WA

I still stand by what I said above. It does work and I still get no pinging like I did before unplugging the battery cable overnight to let the computer reset to a base and relearn my driving habits. Haven't changed brand or grade of gas or added anything different to the vehicle.

Jun 11, 2004 | 10:19 PM

#20

68 351 bronc

Elder User

Joined: Jan 2004

Posts: 920

Likes: 2

From: Colville

Rdray, your right, I'm going to go unplug the batteries on my flashlights and see if they still ping tomorrow when I plug them back in and beat them against somthing spongy!

Jun 12, 2004 | 12:13 AM

#21

jcrice

Thread Starter

Mountain Pass

Joined: Jan 2003

Posts: 161

Likes: 1

Quote:

Originally Posted by daimon1054

Ahh, a fellow programmer. I write software for the pulp and paper industry. Not nearly as exciting. Thanks for your input.

Jun 12, 2004 | 10:10 AM

#22

daimon1054

Posting Guru

Joined: Jul 2002

Posts: 1,372

Likes: 0

From: Broussard USA

Quote:

Originally Posted by 68 351 bronc

Ford has to make sure the engine will go 100,000 miles and meet all emissions requirments for that 100,000 miles. In order to do that conservative settings are in place to protect the pistons in the event that you got bad gas and were pulling a load, in other worlds the worst case senerios have to be accounted for. A chip MFG does not care about anything, but making the motor make most power and is counting on the driver to only run the best gas so the safety limits can be reduced.
The reason you still get pre-ignition? For the most part you don't, what you hear is more often than not something else. When the knock sensor hears it, long before you will ever, it pulls timing way back then slowly feeds it back in. Now that is not to say that conditions don't exsist that will allow pre-ignition but they are really few and far between in todays modern engine.

Jun 12, 2004 | 09:20 PM

#23

RDRAY

Junior User

Joined: Apr 2004

Posts: 85

Likes: 0

From: Longview, WA

Quote:

Originally Posted by 68 351 bronc

Rdray, your right, I'm going to go unplug the batteries on my flashlights and see if they still ping tomorrow when I plug them back in and beat them against somthing spongy!

Don't hit your head to hard!!