How many people have gotten their 230+ cams
07-22-2004, 10:48 PM
#23
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Originally Posted by Ragtop 99
I was looking at a stock 1998 table. Your idle air values for the IAC vs Coolant temp (Gear P/N) have been raised a lot, generally about 40%.
07-23-2004, 10:38 AM
#25
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I'll do a fresh read of my PCM today and post up on my bin repository... I've gotta 232/240 593/603 112 in my 382 and it idles great (I played w/some of the timing tables at idle and VE at idle) without the A/C .. I tested it yesterday with the A/C (I usually don't run it... and it's coming outta the car soon most likely) and it held an idle ... every once in a while it'd hunt but for the most part it was great
My TB is drilled out 1/16 larger than stock also (did that 1.5 years ago when I installed a TR224 and was still getting into Edit)
It's for a 2000 so you'll be able to read it
My TB is drilled out 1/16 larger than stock also (did that 1.5 years ago when I installed a TR224 and was still getting into Edit)
It's for a 2000 so you'll be able to read it
07-23-2004, 11:05 AM
#26
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Originally Posted by horist
I'll do a fresh read of my PCM today and post up on my bin repository... I've gotta 232/240 593/603 112 in my 382 and it idles great (I played w/some of the timing tables at idle and VE at idle) without the A/C .. I tested it yesterday with the A/C (I usually don't run it... and it's coming outta the car soon most likely) and it held an idle ... every once in a while it'd hunt but for the most part it was great
My TB is drilled out 1/16 larger than stock also (did that 1.5 years ago when I installed a TR224 and was still getting into Edit)
It's for a 2000 so you'll be able to read it
My TB is drilled out 1/16 larger than stock also (did that 1.5 years ago when I installed a TR224 and was still getting into Edit)
It's for a 2000 so you'll be able to read it
I wished I could open a file for another year model with my software. It would allow us to look at similar combo's for other years.
07-23-2004, 11:37 AM
#28
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ok, i'll add a new feature to the bin repository this weekend... ability to upload not only the bin, but up to 10 additional .xls files containing table values
This way whomever uploads the file, if they so choose, can also extract the tables and post them individually
I will do this with my setup as well (i won't be at my server until late tonight so the files won't be up and the site updated till some time saturday... assuming I don't have issues installing my new Torque Converter)
This way whomever uploads the file, if they so choose, can also extract the tables and post them individually
I will do this with my setup as well (i won't be at my server until late tonight so the files won't be up and the site updated till some time saturday... assuming I don't have issues installing my new Torque Converter)
07-23-2004, 11:55 AM
#29
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My 238/240 .605/.609 112+2 idles nice @ 900, a/c on or off. I end up scaling the idle air tables by hand, with seemingly arbitrary numbers. I've tried comparing the numbers in the table to MAF-reported values and/or Desired IAC Flow --- and they've never matched up 
FWIW when I'm done, my curve looks nothing like stock, its a LOT flatter.
I just touched up a tune done @ MTI where the guy would experience some stalls every now and then, but not always. One of those cases where you wouldn't notice it at the shop type things. Anyway, same basic solution -- I basically flattened out the curve a little (ie. more air added at higher temps, but not as much added at lower temps). Seems that big cam cars' idle air requirements don't taper off as much with temperature like small cam cars.
FWIW when I'm done, my curve looks nothing like stock, its a LOT flatter.I just touched up a tune done @ MTI where the guy would experience some stalls every now and then, but not always. One of those cases where you wouldn't notice it at the shop type things. Anyway, same basic solution -- I basically flattened out the curve a little (ie. more air added at higher temps, but not as much added at lower temps). Seems that big cam cars' idle air requirements don't taper off as much with temperature like small cam cars.
07-26-2004, 10:02 AM
#33
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Originally Posted by Brains
My 238/240 .605/.609 112+2 idles nice @ 900, a/c on or off. I end up scaling the idle air tables by hand, with seemingly arbitrary numbers. I've tried comparing the numbers in the table to MAF-reported values and/or Desired IAC Flow --- and they've never matched up FWIW when I'm done, my curve looks nothing like stock, its a LOT flatter.
I just touched up a tune done @ MTI where the guy would experience some stalls every now and then, but not always. One of those cases where you wouldn't notice it at the shop type things. Anyway, same basic solution -- I basically flattened out the curve a little (ie. more air added at higher temps, but not as much added at lower temps). Seems that big cam cars' idle air requirements don't taper off as much with temperature like small cam cars.
FWIW when I'm done, my curve looks nothing like stock, its a LOT flatter.I just touched up a tune done @ MTI where the guy would experience some stalls every now and then, but not always. One of those cases where you wouldn't notice it at the shop type things. Anyway, same basic solution -- I basically flattened out the curve a little (ie. more air added at higher temps, but not as much added at lower temps). Seems that big cam cars' idle air requirements don't taper off as much with temperature like small cam cars.
Matt
07-26-2004, 10:15 AM
#34
TECH Senior Member
http://www.transamws6.net/HPTuners/bin/Horist072504.zip
sorry guys, got busy this weekend and didn't have a chance to work on the site at all... but here's the zip
it contains my .bin file (2000 F-Body) and I also extracted the main VE table into excel
sorry guys, got busy this weekend and didn't have a chance to work on the site at all... but here's the zip
it contains my .bin file (2000 F-Body) and I also extracted the main VE table into excel
07-26-2004, 02:48 PM
#36
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Horist, Looking at your VE table it appears that you did a lot of leaning out across the board. How does the extra cubes reflect on the VE? Did you scale the entire table be a certain % to accomadate the extra cubes or did you just change the litres per cylinder thingy?
07-26-2004, 03:29 PM
#37
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ok that was weird.. but I just looked at it and get what's going on now
my car's a 382 stroker,
3.898 bore, 4.000 stroke
volume is pi * r^2 * h
pi = 3.14159
r = 1/2 diameter, so 1.949
h = stroke, 4
3.14159 * 3.798601 * 4 = 47.73458766236 cubic inches
the PCM stores this in liters
1 centiliter = .6102 cubic inches so this is 78.22777394683710258931497869551 cubic centiliters, 100 centiliters to a liter
so the volume of 1 cylinder in my case is .7823 liters or so... a stock car has a cylinder volume of .7082 liters, so I'm 10% more volume, therefore if you take the values in that excel spreadsheet (my values) and multiply by 110% they should look like stock value.... it appears the values in the VE table for HP Tuners is a percentage based on the cylinder volume. since my cylinder volume value is different my percentages look different.
http://www.transamws6.net/HPTuners/bin/VEComp.xls
If you look at the spreadhseet above, it shows my tune, a stock 2000 tune, and the differences in grams of air instead of percentage of cylinder volume...
LOL! after doin gall that I reread your post...
Yes I just did the liters per cylinder thing hehe (I didn't even see that... I was looking at files in edit and hp tuners ... finally realized there was a cylinder volume spec... that part of the tune was handled by speed inc)
my car's a 382 stroker,
3.898 bore, 4.000 stroke
volume is pi * r^2 * h
pi = 3.14159
r = 1/2 diameter, so 1.949
h = stroke, 4
3.14159 * 3.798601 * 4 = 47.73458766236 cubic inches
the PCM stores this in liters
1 centiliter = .6102 cubic inches so this is 78.22777394683710258931497869551 cubic centiliters, 100 centiliters to a liter
so the volume of 1 cylinder in my case is .7823 liters or so... a stock car has a cylinder volume of .7082 liters, so I'm 10% more volume, therefore if you take the values in that excel spreadsheet (my values) and multiply by 110% they should look like stock value.... it appears the values in the VE table for HP Tuners is a percentage based on the cylinder volume. since my cylinder volume value is different my percentages look different.
http://www.transamws6.net/HPTuners/bin/VEComp.xls
If you look at the spreadhseet above, it shows my tune, a stock 2000 tune, and the differences in grams of air instead of percentage of cylinder volume...
LOL! after doin gall that I reread your post...
Yes I just did the liters per cylinder thing hehe (I didn't even see that... I was looking at files in edit and hp tuners ... finally realized there was a cylinder volume spec... that part of the tune was handled by speed inc)
Last edited by horist; 07-26-2004 at 03:35 PM.
07-26-2004, 11:19 PM
#38
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HMMM so basically if somebody had a cam with similar specs but in a stock cubed 346, they could probably scale your VE by 110% and have a good starting point to begin with. Does that logic sound correct? I know every car is different but would it be close?
Matt
Please bare with me I'm still new to this tuning stuff. Sometimes I feel like this:
So many different tables to look at and adjust, and so many methods to use. 
Matt
Please bare with me I'm still new to this tuning stuff. Sometimes I feel like this:
So many different tables to look at and adjust, and so many methods to use.
07-26-2004, 11:49 PM
#39
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well... basically in my VE table the only columns that are different than stock are the 400,800 and 1200 columns... they are all scaled to 55% of stock values and the car holds an idle well at 950rpms ... the rest of the time is the same as stock
07-27-2004, 07:34 AM
#40
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Originally Posted by horist
well... basically in my VE table the only columns that are different than stock are the 400,800 and 1200 columns... they are all scaled to 55% of stock values and the car holds an idle well at 950rpms ... the rest of the time is the same as stock
Yeah I just took another look at them and realize that now. What did you adjust for part throttle tuning then?
