Kamauxx
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@Terry@BMS
Was looking at the updates on your forum and decided to ask questions here since a) I'm not a member there and b) people here can also benefit from the info.
From your post:
1) Added map4, valet map, which runs around half as much boost as stock. Perfect for when your "friends" borrow the car or when you want to resist the urge to waste fuel.
2) Minor boost target adjustments to all maps based on our latest dyno testing.
3) Added in logic for our new fuel control system which allows the JB4 to directly alter the air/fuel ratio when also equipped with add-on fuel wires. Currently interface is programmed so that under fuel enrichment by RPM you enter 100 to make the AFR target 1pt leaner than stock, for example. Values of 0 mean do not change AFR in this range. Do not change these settings unless also adding in the fuel wires or your AFR reading in JB4 logs will be inaccurate. Suggested settings are as follows. We currently limit each value to no more than 1pt leaner than stock (value of 100) for evaluation. On the dyno we found AFR leaner than around 11.2:1 at higher RPM resulted in no additional power gain.
Questions:
The minor boost adjustment for all maps (number 2) is this a 1psi adjustment? Something smaller/larger? Something we should expect to feel/see in the 1/4 mile? For someone running map 2 without fuel control wires will they be able to tell a difference between version 2 and version 3 of the firmware?
Does fuel control adjustment only work in map 6 since it's on the same page as map 6 adjustments?
Is there any reason why the fuel control should only kick in once in the upper RPMs? Are there downsides to having it available before 4500 RPM?
@RandallK you said you car is running great with map 3. Curious what type of fuel you're using?
Thanks gents.
Was looking at the updates on your forum and decided to ask questions here since a) I'm not a member there and b) people here can also benefit from the info.
From your post:
1) Added map4, valet map, which runs around half as much boost as stock. Perfect for when your "friends" borrow the car or when you want to resist the urge to waste fuel.
2) Minor boost target adjustments to all maps based on our latest dyno testing.
3) Added in logic for our new fuel control system which allows the JB4 to directly alter the air/fuel ratio when also equipped with add-on fuel wires. Currently interface is programmed so that under fuel enrichment by RPM you enter 100 to make the AFR target 1pt leaner than stock, for example. Values of 0 mean do not change AFR in this range. Do not change these settings unless also adding in the fuel wires or your AFR reading in JB4 logs will be inaccurate. Suggested settings are as follows. We currently limit each value to no more than 1pt leaner than stock (value of 100) for evaluation. On the dyno we found AFR leaner than around 11.2:1 at higher RPM resulted in no additional power gain.
Questions:
The minor boost adjustment for all maps (number 2) is this a 1psi adjustment? Something smaller/larger? Something we should expect to feel/see in the 1/4 mile? For someone running map 2 without fuel control wires will they be able to tell a difference between version 2 and version 3 of the firmware?
Does fuel control adjustment only work in map 6 since it's on the same page as map 6 adjustments?
Is there any reason why the fuel control should only kick in once in the upper RPMs? Are there downsides to having it available before 4500 RPM?
@RandallK you said you car is running great with map 3. Curious what type of fuel you're using?
Thanks gents.
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