I have a post over in the Electronics area on this same topic. I have a L69 with the stock CC Q-jet. I built a RS232 circuit to connect to the ALDL connector and goes to the serial port on a laptop. What software do you guys use? I'm trying to tune the car and I want to monitor O2 sensor, TPS sensor, MAP sensor, etc. I have found gobs of stuff on FI'd cars but not much on carb'd cars.

I hope this doesn't alienate me, but this is for my 87 Monte Carlo SS. I have been told that the L69's in the Monte's were the same as the L69 in F-bodies. My ECM has a part number of 1228079 and currently has the stock chip in it. Thanks in advance and have a good one.

 

Go here http://w1.601.telia.com/~u60113744/s...dl/winaldl.htm I think it supports the carbed cars for the most part but you cant see a couple of things, one of which I think is knock count from the knock sensor. If you go to the diy prom board you may be able to find more.

Ben

 

Thanks for the info. WinALDL is one software programs I'm trying to get to work.

 

I don't get it. What does this software do? Does it enable you to program your carb'd car or is it just diagnostic?

 

It is just diagnostic, but it can help you know what you need to do as far as tuning.

Ben

 

scan tool & carb...two phrases that should of never been put in the same area.....get a real carb

 

Well, if you would do some research you would find that the computer controlled quadrajets can work real well on the street with some strip use. They (if properly tuned) will work as good as another carb of the same size(750). You also get better gas mileage because of the smaller primaries and computer controlled primary mixture.

What do you have by the way as far as motor and induction that you should tell him that his carb isnt worth having?

Ben

 

Homer,
The software allows you to communicate with the ECM (computer) to monitor different sensor values, such as Oxygen sensor, TPS, knock sensor, etc. and look at engine codes. You can't program with it, but it is very helpful in tuning your engine after making changes.

For those of us that have dealt with emissions, the stock is the best we can do. Swapping carbs also means swapping to a non-computer distributor, which is more money. It's alot cheaper to just have the stock one rebuilt. Last time I checked, JET charged around $260 for a Stage2 rebuild which is cheaper than most performance carbs. Plus if your emissions testing has a visual inspection, good luck passing with a Holley or Edelbrock. The carb is just fine, and performs great when it is tuned. The computer control of the carb only occurs at part throttle, at full throttle it acts just like a mechanical Q-jet. With a few simple mods it will flow over 750cfm. Good power, good mileage and pretty darn relaible. Sounds like a real carb to me, especially for a daily driver that see occassional racing. Also, no power valves to deal with. Have a good one!

Matt