Real Fiero Tech

The Dark Side of Will wrote:
What kind of scale?

Digital truck scale near my old work. The owner said he keeps them well calibrated because it cost him too much money to be underweight or overweight on his loads. It’s a short scale intended to weigh one axle at a time, but I managed to get my whole car on it.

Aaron

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There it is.

http://realfierotech.com/phpBB/viewtopic.php?t=4625

Huh?

awesome that you guys weighed all these cars. Thanks for sharing.

Yo.

crazyd wrote: My BLMs are currently at 110, and until I see that come a lot closer to 128, it would be counterproductive to do a dyno run. But I'll tell you what. If someone with MAP tuning knowledge on a 730/262 or similar ECM would like to review my current BIN and help me get to that point, ensuring my AFR is dead on for max power at WOT, and we take up a collection for the dyno run, I'll do it.

VEMaster + TTS Datamaster = Your best tuning friend for these computers. Should take care of your fuel tables at idle and part throttle (non-PE mode) and all that will be left is tuning spark and WOT fuel.

What you will need:

-VEMaster 2.0 or 2.1 for "8D" code mask
-TTS Datamaster 8D
-Laptop PC
-Laptop to ALDL interface

Datamaster is a very nice scan tool program that can save/store a very detailed log of all the scan data gathered during a data collection cycle to your laptop pc's HDD. VEMaster uses the learned/stored fuel trims (BLM's) in the log to compute what changes need to be made to the VE tables (fuel delivery) and automatically makes those changes to the .bin file. This will only work when Block Learn is enabled; thus it will only work when the system is in Closed Loop and not in PE (power enrich, WOT) or Decel Fuel Cutoff modes. For WOT fuel tuning, I suggest obtaining a WideBand O2 sensor and using that for the best results.

A note about getting DM logs for use with VEMaster tuning: You want to hit as many cells as you can during the drive in which you are logging data. These "Cells" are known as the stored fuel trim values (BLM cells). There are typically 16 cells used in normal driving in these computers and they are divided up by engine load and rpm. It also takes time for the BLM to learn a given value, so make sure you drive the car a while without resetting the computer before you take a log for use with VEMaster. You may also need to adjust the blm cell boundries in the .bin file to make them work better for this purpose. Most stock $8D code masks have a very narrow boundry for the BLM cells pertaining to the RPM side of the equation, and you will definately want to address that in the chip programming before getting these logs.

TTS Datamaster $8D is available for download on the internet and I believe the newest version still has the free 20-log trial before the software becomes locked and you have to purchase it. VEMaster is available for download for free on the internet in various places. There are two versions I am familar with: $8D 2.0 which only does the $8D code mask and 2.1 which can do $8D, $DA2 LT1, and $DA3 LT1 masks all in the same program.

-ryan

I weighed my Northstar car, but don't have the numbers handy. We used digital scales on a smooth concrete surface. Getting the car up the ramps was interesting. A little too much clutch and one of the scales under the rear wheels would go sliding across the floor and come to rest 20 feet away.

Sinister Fiero wrote:

crazyd wrote: My BLMs are currently at 110, and until I see that come a lot closer to 128, it would be counterproductive to do a dyno run.

VEMaster + TTS Datamaster = Your best tuning friend for these computers. Should take care of your fuel tables at idle and part throttle (non-PE mode) and all that will be left is tuning spark and WOT fuel.

What you will need:

-VEMaster 2.0 or 2.1 for "8D" code mask
-TTS Datamaster 8D
-Laptop PC
-Laptop to ALDL interface

I've already got the last three. The 110 BLM I mentioned was obtained from Datamaster. I'll see about getting myself a copy of VEMaster.

Sinister Fiero wrote:Datamaster is a very nice scan tool program that can save/store a very detailed log of all the scan data gathered during a data collection cycle to your laptop pc's HDD.

I've already run one of these logs, so that part's done. I drove around for about 15 minutes while datalogging.

Sinister Fiero wrote:For WOT fuel tuning, I suggest obtaining a WideBand O2 sensor and using that for the best results.

I have had an O2 sensor plug installed in my exhaust pipe just for that purpose. Now where do I get a WB?

Sinister Fiero wrote:A note about getting DM logs for use with VEMaster tuning: You want to hit as many cells as you can during the drive in which you are logging data. These "Cells" are known as the stored fuel trim values (BLM cells). There are typically 16 cells used in normal driving in these computers and they are divided up by engine load and rpm. It also takes time for the BLM to learn a given value, so make sure you drive the car a while without resetting the computer before you take a log for use with VEMaster. You may also need to adjust the blm cell boundries in the .bin file to make them work better for this purpose. Most stock $8D code masks have a very narrow boundry for the BLM cells pertaining to the RPM side of the equation, and you will definately want to address that in the chip programming before getting these logs.

It's difficult to do a log to that level of detail in this car because it's so powerful and has such short gearing. Giving it anything more than about 5% throttle is the fast track to highly illegal speeds, and there just aren't many places to do that around here without spending a night in jail! Nevertheless, if you'd like to take a look at the log I ran, I'll send it to you.

Thanks for your insights.

Dave

Another thing I realized over the weekend, this car has one of those heavy-ass FieroStore trailer hitches on it. That was the other reason I was using my stock '88 GT to compare, because it has one too.

crazyd wrote:
It's difficult to do a log to that level of detail in this car because it's so powerful and has such short gearing. Giving it anything more than about 5% throttle is the fast track to highly illegal speeds, and there just aren't many places to do that around here without spending a night in jail! Nevertheless, if you'd like to take a look at the log I ran, I'll send it to you.

Dave

YOu know there are these things called a dyno. You can go there and put it in 4th gear and do 4th gear pulls all day without having to worry about breakign the law. You should know what a dyno looks like right? MotorTV said you went to one already. Which you still haven't commented on after I told you who said it. So it must be true?

Most dynos also have wideband capabilities as well so you don't need to buy one. Just go there and spend an hour or two tuning it on a wideband and you will be good.

So that breaking the law excuse shouldnt' really fly anymore.

You are trying to tuen on a narrowband O2 sensor? Sounds typical .nl to me. www.plxdevices.com and pick up a wideband from them. They have ones that can datalog too. I have a plx for my car and I like it.

And on top of all of this, after you hit the dyno and tune it, you can share your numbers with everyone. Win/win

I second the dyno suggestion (without the attitude :scratch: ).

You can rent dynos around here for $100/hr including use of the wideband. Just get there with your chip burning stuff ready to go and you can probably get quite a few runs in an hour or two to get it tuned right.

I found the following info at fieroo.com. The rated weight difference between 88 Formula and 88 GT is 56 lbs.

I would estimate the weight of the trailer hitch and mounting hardware at 25-30lbs.