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JFairman,
We are very much on the same page in terms of what can be accomplished using the factory distributor.
More advance off idle by shortening of the mechanical advance portion and re-curving should add better response as has been adoped successfuly by some here already.
Keep on boost timing at a proven level.
I might add.
MSD could add its own potential to pre boost operation with or without boost retard or programability.
It might be worth it to verify on boost timing goal on a dyno by starting off at a low timing value and adding it advance to find a safe peak timing on boost to fit the specifics of a given build. We are just shooting in the dark and -26 base timing might even be to much for some builds (1 bar, depending on the turbo, cam, inter-cooler efficiency).
The other way to go being a fully mappable by load (boost/vac) and rpm. This offers more potential as the timing curve could be bent around sensitivity at TQ peak or the less than ideal AFR curve that comes with CIS and better fit to what the motor would take.
This should also allow for more aggressive timing on low load cruse for a significant increase in fuel economy and some increase in throttle response.
Tuners have been finding solid performance increased in the ignition side sense the first motor. We get so in to the fuel and air side and rarely look to the ignition side other that twinpluging with the CIS 930.
A dyno-tune where AFR & timing values are optimized by someone that knows what they are doing is in most cases going to make a significant difference.
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