Highway Mode Spark Adv. - Third Generation F-Body Message Boards

LBSZ28BLOWN · 12-09-2001, 01:52 PM

The question I have is:
7730 8D ver. X
In the Constants there is a setting for,
(Max. RPM Counts for Highway Spark Adv.)
It's set at 248 counts, What should it be set at to enable HMSA and what dose it do.
Thanks

------------------

Louis
Convertable
92 Z28 305tpi Auto
1/4 at 12.99 @ 109.07mph With poor traction w/Paxton 10psi, Ram air mod,Water methanol inj.,52mm T/B,ASM Large tube runners, ported upper & lower intakes,AFPR,23# injectors,1.6 roller rockers,slp tri-y headers,3in. cat,3in. gale banks cat back system,3.42 gears,17x9 camaro SS wheels, 285x40x17 tires,and much more.
http://www.lbsz28blown.cz28.com

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Grim Reaper · 12-09-2001, 05:52 PM

Quote:

<font face="Verdana, Arial" size="2">Originally posted by LBSZ28BLOWN:
The question I have is:
7730 8D ver. X
In the Constants there is a setting for,
(Max. RPM Counts for Highway Spark Adv.)
It's set at 248 counts, What should it be set at to enable HMSA and what dose it do.
Thanks

</font>

As the stock Highway Mode code in the AUJP is written, that RPM level is the "minimum" RPM level needed to invoke HMSA.

The reason they use "counts" is because it uses a non-standard RPM filter. No one really knows what the "254" equates to in the actual minimum RPM needed to invoke HMSA. The 8D Hac suggests 4,700+ RPM.

Try setting the value to a low value.

LBSZ28BLOWN · 12-09-2001, 08:20 PM

Thanks Glenn,
I'll give it a try this week.

------------------

Louis
Convertable
92 Z28 305tpi Auto
1/4 at 12.99 @ 109.07mph With poor traction w/Paxton 10psi, Ram air mod,Water methanol inj.,52mm T/B,ASM Large tube runners, ported upper & lower intakes,AFPR,23# injectors,1.6 roller rockers,slp tri-y headers,3in. cat,3in. gale banks cat back system,3.42 gears,17x9 camaro SS wheels, 285x40x17 tires,and much more.
http://www.lbsz28blown.cz28.com