Okay so after reading that re-hashed thread about wb readings vs blms i think im going to start trying to tune the engine in my sig in open loop.

Not running a cat so i dont have any real use for closed loop as it seems to be.

The guy who just did a rough in on my tune to break the motor in (shop now out of business, which is why i got into tuning) locked the car in open loop and the car ran pig rich everywhere like smell it from around the block rich, but it still had a stock fuel curve in the VE table and im not sure how he managed to accomplish this, tuning was done on the dyno.

my loop open % change afr vs map makes sense to me but i dont really understand what i should be doing with the loop open % change afr vs temp. Ill want to run the car right up until winter so will probably be running it in 5 degree weather. Mind you ill be letting it come to temp as much as it will at idle before driving it but will the computer use the temp afr over the map if it sees that its cold? or in addition to the map? Not sure how it combines the two tables and what sort of afr i should be putting into that table

nextly and more general how the heck do i change tunerpro from celcius to farenheight! i live in canada and i dont have a freakin clue how the temps corrolate to car stuff i learned all that in farenheight.

rbob also sugested turning off PE but as i can see it at 100% tps youre going to go into PE no matter what, cant find any way aroudn that.


nextly and more general how the heck do i change tunerpro from celcius to farenheight! i live in canada and i dont have a freakin clue how the temps corrolate to car stuff i learned all that in farenheight.

Lastly (for now) again more general no one has ever answered this for me in my SA tables do the numbers there include my base timing or are they in addition to the base timing.
also my comp cams camshaft comes with i think its 4 degrees of advance built into it, does this need to be factored into the tune anywhere or just kept in mind when youre putting your total advance in?

 

To display CTS in F change the equation in the ads file. Here are the two of them, for C & F:

C = N * .75 - 40
F = N * 1.35 - 40

The advance in the cam has no affect on the SA calculations or settings. The cam specifications will determine the SA at various areas of the table. Lots of overlap and low engine speed generally requires more SA. BUt advancing the cam won't affect the distributor timing. That gets set with a light relative to piston TDC.

The distributor base timing needs to the set the same as the initial timing in the BIN. The code subtracts out the initial and the distributor adds it back in. So what you see in the main SA tables is what you get at the crank (+- the modifiers).

For the AFR change % vs CTS, it and the AFR change% vs MAP both affect the stoich value to create the desired AFR. For the CTS table I would leave it alone until it gets cold out. Then adjust accordingly.

Looking at the $8D code, sure enough at 100% it will go into PE mode. Strange way to write the code. Usually need to be over a threshold in order for it to be activated. Could change the BHI to a BCC (or BHS).

RBob.

 

re-hashing this

im confused with the changins CTS values to F

EDIT: so i just opened it in word.

found these two tables

dwItemType =1;
strItemComments =None;
bSeparator =0;
bVisible =1;
dwUniqueID =4;

btByteNumber =8;
btMessageNumber =1;
dwItemSizeBits =8;
dwOperation =0;
dFactor =0.750000;
dOffset =-40.000000;
strItemTitle =Coolant Temp;
strUnitLabel =Deg C;
dwAlarmHigh =255;
bAlarmHighENable =0;
dwAlarmLow =0;
bAlarmLowEnable =0;
iRangeHigh =255;
iRangeLow =0;
iLookupTableIndex =-1;
}

{
dwItemType =1;
strItemComments =None;
bSeparator =0;
bVisible =1;
dwUniqueID =5;

btByteNumber =9;
btMessageNumber =1;
dwItemSizeBits =8;
dwOperation =0;
dFactor =0.750000;
dOffset =-40.000000;
strItemTitle =Startup Coolant Temp;
strUnitLabel =Deg C;
dwAlarmHigh =255;
bAlarmHighENable =0;
dwAlarmLow =0;
bAlarmLowEnable =0;
iRangeHigh =255;
iRangeLow =0;
iLookupTableIndex =-1;
}


do i just change dFactor =0.750000 to dFactor =1.350000 on both of them?

in this case it will still say its a C reading but will actually be in F

and does changing this in the ads just change the values for my datalogging? i was hoping to also be able to change the tables in the XDF file over to F

 

Don't use word on an ads file, or xdf. Most likely will trash it. At a minimum use Notepad. Better yet would be to use the built in editors.

RBob.

 

where are the built in editors in tuner pro? cant quite figure it out

EDIT
so i opened it in notepad and obviously still the same tables. Was i correct in what i was supposed to be editing and how do i change the xdf file so the tables are also in F

 

Change the value as you mentioned. Be sure to use the same padding as the original.

For the label change this:

strUnitLabel =Deg C;

To edit the XDF in TP right click on the entry that you want to change. Then select "Edit Item XDF info." Edit and save.

RBob.

 

Select the item (but don't open it for value change)
Then press "F2"

 

awesome thats nice and simple

now for some more specific tuning questions.

In the constants theres a "Enrich power AFR Enable Min. Temp" i just converted that to F and the value in it is 242 degrees =|. Now i dont think theres any way my car was EVER getting up to 242 degrees it runs pretty cool, but BEFORE i turned PE up to 99.8% it was kicking on because my blms were going static at 128 in the PE range.

So firstly if the min temp value is set that high why was PE coming on, that being said im a little discouraged because you can only turn pe off until 99.8% or somethign like that, and was hoping if i maxed out that constant i could completly shut off PE, so i dont have to mess with it at all.

My other question i guess comes down to what the numbers in the VE table actually represent. Trying to better understand what function Loop open % change afr vs map if the computer isnt adjusting at all. The numbers in the VE table must represent a percentage of some value at which it can then add fuel.

 

bumpity bump bump

i know some of these questions may be a little redundant, im not so worried about the PE thing going to turn that pe min temp to max and see if pe still comes on and goes from there

but it would be very helpful to understand what the numbers in the ve table actually represent and how changing the target afr affects those numbers.

not to mention if you have a table that changes what the target afr is based on map, why do you need PE which is a series of tables that change afr based on map.