Olds Achieva day at the Test & Tune

[Ed Wright]

Robert, if you think the ECU is learning to undo your changes you can jumper the ECM (or PCM) Batt fuse to the powered side of the ECM (or PCM) Ign fuse. That way every time you turn it off any learning will be lost. I think your mistaken about that happening, but that would take care of that if it is.

Slowing like that as it heats up is normal for those.

[Robert Swartz]

Originally Posted by Ed Wright

Robert, if you think the ECU is learning to undo your changes you can jumper the ECM (or PCM) Batt fuse to the powered side of the ECM (or PCM) Ign fuse. That way every time you turn it off any learning will be lost. I think your mistaken about that happening, but that would take care of that if it is.

Slowing like that as it heats up is normal for those.

Ed,

At present, we don't have a way to tune the car. The ECM still has complete control. What I ran into, we were attempting to vary the shift points. It would shift at 6200 rpm in spite of what we did.

That's something I don't have is an ability to make tuning changes to the ECM. I don't know of any chips for these cars. An avenue I haven't explored deeply, yet.

Thanks for the burnout tips, guys. Until I get the DR's on it, that's really not an issue. Does give me something to work on.

[art leong]

Originally Posted by Robert Swartz

Ed,

At present, we don't have a way to tune the car. The ECM still has complete control. What I ran into, we were attempting to vary the shift points. It would shift at 6200 rpm in spite of what we did.

That's something I don't have is an ability to make tuning changes to the ECM. I don't know of any chips for these cars. An avenue I haven't explored deeply, yet.

Thanks for the burnout tips, guys. Until I get the DR's on it, that's really not an issue. Does give me something to work on.

I wouldn't go for the DR's. I have never run them. But know a lot that have. And mostly it was a waste of money. Unless rules make you run DR's Slicks are a whole lot better.

[Tod Lane]

A couple thoughts Bob.
Even with the water moved toward the starting line the actual start line prep was the same as always.
The air was noticably better,cooler and less humid.
The passes I made in the car I never tried a burn out but I did manage a couple lets call them dry hops for the lack of a better term, it still spun launching off dead idle, pushing it to 1200, or completely loading it to maybe2300.
It felt like it spun for20-30 feet , the more launch rpm the longer it seemed to spin.
I think the better air=more hp which caused the wheel spin and netted slower times. Hot laps probably contributed as well

[Ed Wright]

Is the ECM case sheet metal or cast alum?

[Robert Swartz]

Originally Posted by Ed Wright

Is the ECM case sheet metal or cast alum?

Ed, it's the sheet metal case.

Art, I'm using the DR's for now, because of wheel size limitation. All the good low profile slicks are in 13 inch sizes. With this car, they started building them with the larger front brakes, 13" wheels don't fit without converting to earlier brakes. Also, the 120k engine doesn't make a ton of hp. With this transmission, don't know how cost effective making a set of lower gears would be at present. If we keep the car. Start working toward making some real power. This will become a necessisity. The tires are an easy change.

The next option, in my playbook, is a header. A guy in neighboring Ohio makes a nice one. Other than a way to tune it, as well as start to look at how to work with the suspension. I want to stiffen the rear. Haven't really figured out what I can do converterwise, yet. After that, it's time to go into the motor.

[Ed Wright]

That will be a plug- in chip. The flash memory boxes are at least part cast alum. If you want to get me the fore letter I.D. Code from the top of the factory Memcal ("chip") I will see if I have any info about it. That code will be four Capitol letters beginning with an A, B, or a C.