ThunderMax Timing is RETARDED!
#41
08-21-2007, 08:39 AM
#42
08-21-2007, 08:39 AM
#43
08-21-2007, 08:42 AM
Road Captain
Join Date: Jun 2006
Location: Fort Worth, Texas
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RE: ThunderMax Timing is RETARDED!
ORIGINAL: Z_Stingray
Where did you get your timing tables? How were your timing tables developed? Would you post them for comparison? Are you sure your build is that much different as far as compression goes?
Where did you get your timing tables? How were your timing tables developed? Would you post them for comparison? Are you sure your build is that much different as far as compression goes?
I don't have my map here at work, but you can download map 283 and check out the timing tables. I haven't changed them so far. I've changed the AFR tables quite a bit in an attempt to up my mileage.
#44
08-21-2007, 09:16 AM
Ultimate HDF Member
RE: ThunderMax Timing is RETARDED!
Guys, I'll post my SERT spark advance tables for both front and rear cylinders tonight when I get home from work. Comparing the map from the "H" cd to the "J" cd, the timings are MUCH more condusive to a happier engine from the "J" cd spark advance tables. The timings are retarded in some areas and advanced in others, IMO, to reduce the shock load(evidenced by noise) on the new 96" motors in specific areas.
Again, I'll post these tables tonight. The finding of Jimmy Hoffa would come if the conversion of the VE tables could be applied to the TMax RPM vs. Timing tables.........only problem is the lack of tuning capabilities for both front AND rear cylinders in the TMax program, as least the way I see it.[8D].
Again, I'll post these tables tonight. The finding of Jimmy Hoffa would come if the conversion of the VE tables could be applied to the TMax RPM vs. Timing tables.........only problem is the lack of tuning capabilities for both front AND rear cylinders in the TMax program, as least the way I see it.[8D].
#45
08-21-2007, 09:25 AM
RE: ThunderMax Timing is RETARDED!
Tmax does allow a bias to be set between the front and rear cyclinders. It has a table where youcan either advance or retard the timing between the two. It's either based on RPMs or TPS. Not the same as the SERT with specific maps for each cylinder, but at least you have something to work with.
Tell me more about tuning the timing between the two cylinders? I know nothing about this and would like to see a typical setup. Is the front typically more advanced than the rear, or visa versa?
Tell me more about tuning the timing between the two cylinders? I know nothing about this and would like to see a typical setup. Is the front typically more advanced than the rear, or visa versa?
#46
08-21-2007, 11:49 AM
RE: ThunderMax Timing is RETARDED!
ORIGINAL: kdietz
My math came out different, but here's my take:
16 in-Hg = 2% Throttle = 12.54 degrees
18 in-Hg = 5% Throttle = 14.85 degrees
20 in-Hg = 10% Throttle = 18.70 degrees
22 in-Hg = 20% Throttle = 26.40 degrees
24 in-HG = 40% Throttle = 34.10 degrees
26 in-Hg = 60% Throttle = 57.2 degrees
28 in-Hg = 80% Throttle = 72.60 degrees
30 in-Hg = 100% Throttle = 88 degrees
ORIGINAL: Z_Stingray
So if we scale 11 to 88 then we end up with....
16 in-Hg = 11% Throttle
18 in-Hg = 22% Throttle
20 in-Hg = 33% Throttle
22 in-Hg = 44% Throttle
24 in-Hg = 55% Throttle
26 in-Hg = 66% Throttle
28 in-Hg = 77% Throttle
30 in-Hg = 88% Throttle
At least that's how the math works out.
So if we scale 11 to 88 then we end up with....
16 in-Hg = 11% Throttle
18 in-Hg = 22% Throttle
20 in-Hg = 33% Throttle
22 in-Hg = 44% Throttle
24 in-Hg = 55% Throttle
26 in-Hg = 66% Throttle
28 in-Hg = 77% Throttle
30 in-Hg = 88% Throttle
At least that's how the math works out.
16 in-Hg = 2% Throttle = 12.54 degrees
18 in-Hg = 5% Throttle = 14.85 degrees
20 in-Hg = 10% Throttle = 18.70 degrees
22 in-Hg = 20% Throttle = 26.40 degrees
24 in-HG = 40% Throttle = 34.10 degrees
26 in-Hg = 60% Throttle = 57.2 degrees
28 in-Hg = 80% Throttle = 72.60 degrees
30 in-Hg = 100% Throttle = 88 degrees
Code:
16.0 in-Hg = 0% Throttle = 11.0 degrees 16.3 in-Hg = 2% Throttle = 12.5 degrees 16.7 in-Hg = 5% Throttle = 14.8 degrees 17.4 in-Hg = 10% Throttle = 18.7 degrees 18.8 in-Hg = 20% Throttle = 26.4 degrees 21.6 in-Hg = 40% Throttle = 34.1 degrees 24.4 in-Hg = 60% Throttle = 57.2 degrees 27.2 in-Hg = 80% Throttle = 72.6 degrees 30.0 in-Hg = 100% Throttle = 88.0 degrees
#47
08-21-2007, 12:30 PM
RE: ThunderMax Timing is RETARDED!
ORIGINAL: glens
I don't have a dog in this fight in any way shape or form, but for what it's worth, this is my take (correlating full-scale pressures and angles to throttle positions):
16.0 in-Hg = 0% Throttle = 11.0 degrees
16.3 in-Hg = 2% Throttle = 12.5 degrees
16.7 in-Hg = 5% Throttle = 14.8 degrees
17.4 in-Hg = 10% Throttle = 18.7 degrees
18.8 in-Hg = 20% Throttle = 26.4 degrees
21.6 in-Hg = 40% Throttle = 34.1 degrees
24.4 in-Hg = 60% Throttle = 57.2 degrees
27.2 in-Hg = 80% Throttle = 72.6 degrees
30.0 in-Hg = 100% Throttle = 88.0 degrees
ORIGINAL: kdietz
16 in-Hg = 2% Throttle = 12.54 degrees
18 in-Hg = 5% Throttle = 14.85 degrees
20 in-Hg = 10% Throttle = 18.70 degrees
22 in-Hg = 20% Throttle = 26.40 degrees
24 in-HG = 40% Throttle = 34.10 degrees
26 in-Hg = 60% Throttle = 57.2 degrees
28 in-Hg = 80% Throttle = 72.60 degrees
30 in-Hg = 100% Throttle = 88 degrees
16 in-Hg = 2% Throttle = 12.54 degrees
18 in-Hg = 5% Throttle = 14.85 degrees
20 in-Hg = 10% Throttle = 18.70 degrees
22 in-Hg = 20% Throttle = 26.40 degrees
24 in-HG = 40% Throttle = 34.10 degrees
26 in-Hg = 60% Throttle = 57.2 degrees
28 in-Hg = 80% Throttle = 72.60 degrees
30 in-Hg = 100% Throttle = 88 degrees
16.0 in-Hg = 0% Throttle = 11.0 degrees
16.3 in-Hg = 2% Throttle = 12.5 degrees
16.7 in-Hg = 5% Throttle = 14.8 degrees
17.4 in-Hg = 10% Throttle = 18.7 degrees
18.8 in-Hg = 20% Throttle = 26.4 degrees
21.6 in-Hg = 40% Throttle = 34.1 degrees
24.4 in-Hg = 60% Throttle = 57.2 degrees
27.2 in-Hg = 80% Throttle = 72.6 degrees
30.0 in-Hg = 100% Throttle = 88.0 degrees
16 in-Hg = 2% Throttle = 12.54 degrees
18 in-Hg = 5% Throttle = 14.85 degrees
20 in-Hg = 10% Throttle = 18.70 degrees
22 in-Hg = 20% Throttle = 26.40 degrees
24 in-HG = 40% Throttle = 34.10 degrees
26 in-Hg = 60% Throttle = 57.2 degrees
28 in-Hg = 80% Throttle = 72.60 degrees
30 in-Hg = 100% Throttle = 88 degrees
I'll correlate the values against the DTT base map and built the TMax timing tables tonight. Hopefully I get a chance to give it a run. It's been raining quite a bit here lately.
#48
08-21-2007, 12:52 PM
Road Captain
#49
08-21-2007, 02:28 PM
RE: ThunderMax Timing is RETARDED!
ORIGINAL: Z_Stingray
I completely overlooked the nonlinear increase in Throttle vs. the linear increase in manifold pressure.
I completely overlooked the nonlinear increase in Throttle vs. the linear increase in manifold pressure.
These ain't kitchen cabinets gettin' built (suggesting a 10 lb. hammer would work just as well as a 10 oz.) so the ballpark figures will likely get to the ballpark.
#50
08-21-2007, 04:09 PM
