guy72

Hi guys!

Can anyone take a minute to explain the differences between these two. To my car ( TA-87, 305tpi) I'm supposed to use the $32B definition file. But I also read that $6E is another option. Richt now my chip isn't original. How can I tell which definition file to use and what happens if I use the wrong one? Why isn't it the same definition file for cars 87-89 since the ECM is the same. Some settings like VATS and Cold starte valve differs but both ECM should read the info in the chip the same way. What am i missing here? I realize this is problably the newbie question of the year but I hope someone can take a moment...

jwscab

Basically, the $6E is a later version, includes some hardware changes, but also is much more refined. Thinks windows 95 to windows 98. not very drastic change, but fixed alot of things.

Which editor are you using? If you read the bin off the chip and try to open with the wrong def., you should see obvious wrong values in tables and flags and so forth. If might also be easy to read the top of the chip to see if someone put a label on it. (factory one will have a broadcast code, which you can either look up, or ask to get info on this board.)

overall, $6E is better, as I said previously, more refined. It does NOT use a cold start injector, so for your '87, you would need to disconnect it (at injector, or pull fuse). It also seems to be better connecting to a scanning program, such as tunerpro or moates' scanner. As you mentioned, VATS is also possibly enabled, so you would need to set it to match your vehicle.

guy72

I use Moates scanner and TunerPro RT. The chip in the car is what I'e been told a "superchip". Some companys after market chip. In my opinion the car runs fairly well but is hard to start warm and by looking ar BLM runs a little lean. I see BLM values of over 145. Improved airflow might be the cause of that. I've raised the fuel pressure a bit but have not yet scanned the car after that.

Now, should I work with the superchip or restart with some other bin file? By the way, is it a way to see in the bin file which definition file to use?

Thanks for the reply!

jwscab

you can look in the binary file with a hex editor at the 8th (9th?) byte, I forget which, and it should have the definition there (6e or 32). You'll have to search on that specifically, because I can't remember which. Someone else may also chime in. Tunerpro I think has a hex editor built in, you can use that to look for that byte. Alternatively, I use the pocket programmer to burn eproms (not for awhile, though) and you can see the first few bytes in the buffer, so I can tell right after reading the rom. The only problem with that is some aftermarket manufacturers, to prevent you from seeing the actual changes, can scramble the binary image, so the byte may not show up in the right place.

if it is an aftermarket chip, most will tell you that the origin and actual 'performance changes' may be very questionable. If it were me, I would start with a good binary file (burn it into a blank prom, with an adapter), so you can go back to the 'known good chip', should the need arise. The superchip may also be a One Time Programmable rom anyway, you may not be able to erase it.

guy72

I compared the superchip content with the supposed original bin 1088ACXS and one of the differences is that the injector constant is 19.5 lbs/hr in the superchip and 20.82 in the original. Otherwise most of the changes was made in the MAF tables.

What I really want to do is to make it more lean at startup. Right now it takes 3-4 sec and it mells a bit of gas right after it's started so I guess it's a bit rich. Whats the easiest whay to correct that?

Byte 8 shows 32 in both bins by the way.

jwscab

if it is only running rich at start-up, there are some start-up tables that you can modify based on coolant temps. There are also some open loop tables to tweak as well.

if it appears to run rich overall, that might be due to the superchips injector constant. they lowered it compared to the other bin you are looking it, which would add more base pulse width, ergo, add more fuel. You can try trimming that back in small increments (.2lb/hr) to see how it changes.

make sure you scan and create logs to see the trends. the more the better. if you have made modifications to the engine, sometimes tweaking the very first few entries in the airflow table helps to move the a/f rich or lean.

guy72

As far as I can see I have no tables regarding Crank or Startup. IfI load the $6E I have a whole bunch but that of course wont work with my bin? It seems that most people have switched från $32B to $6E. Or is there an updated $32B ecu file somewhere? The one I got is from TunerPro's webpage. $32Bv001.ecu

guy72

Done some more reading.....

The best idea seems to be just as you guys said to start with $6E . But from what i seen that seems to be for 350 engine and mine is a 305. What do I have to change in order to make it work in my engine? I can of course compare the tables that I have in my $32b chip but many tables are not defined it that ecu file. All I want is a clean start so that I can progress in my own speed after that.

Nitsuj86Iroc

Well $6E doest mean only 350, the bin is what determins what the tune was intended for. you can have $6E bins for a 350 or $6E bins for a 305... for example, ARAP is a 350 bin, APYM is a 305 bin, both are $6E code.

I have an 86 camaro 305, therefore the original code was $32. i now use a $6E APYM bin and it works great. i unplugged the cold start injector, disabled VATS, and went from there. While i cant guarantee that $6E is the best for a '165 ECM, i assume it is and there is much more conversation and helpful resources on it than the older ones.

hope thats helps any

rockit

iTrader: (3)

i agree with nitsu i use 32b for the fueling ability it gives direct if not precise control,but the more i use the more i wonder if im masochistic or something... i'm in the process right now of getting ARAP to work in my gta

one thing, if you go with 32b, get a celsius to fahrenheit converter, the temps are in c and that threw me off for the longest time!

rockit

iTrader: (3)

okay, i switched to 6E finally... once you understand a bit more about tuning, there's just soo much more to play with in here then in 32b, and the car just runs flat out better. other then the crappiness of 165 ecm's i wouldn't really consider going to sd because for an amatuer tuner there's plenty here to sink your teeth into.

forget 32b, it's like using a screwdriver for toilet paper,,less you like that kind of thing... this is the face i make when i work with 32b