adjusting afr on transbrake to raise boost

98Camarod · 06-20-2013, 11:46 AM

I'm using hp tuners.

Footbrake wise, it doesn't build boost. I either need stronger brakes or a looser converter, it only goes to about 2000rpm.

On the brake for 2.1 seconds it builds 7lbs of boost. That's also with a rich afr and 30* starting ramping down to 18* of timing on the brake. The commanded afr is 7.71, which is on the e85 scale. This is exactly where I have it on the boost enrichment table. My concern is that outside of the transbrake, there will be other times at being at the low boost level which is when I would want to have that afr.

I don't see the boost ve or timing table, but there is a boost enrichment table.

I guess I can make the enable kpa higher to use the PE table and then go to BE table, but i'm not sure if that would work either for what I'm talking about.

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06-20-2013, 11:46 AM	#6
98Camarod Senior Member Join Date: Mar 2009 Location: Summerville, SC Posts: 1,525	I'm using hp tuners. Footbrake wise, it doesn't build boost. I either need stronger brakes or a looser converter, it only goes to about 2000rpm. On the brake for 2.1 seconds it builds 7lbs of boost. That's also with a rich afr and 30* starting ramping down to 18* of timing on the brake. The commanded afr is 7.71, which is on the e85 scale. This is exactly where I have it on the boost enrichment table. My concern is that outside of the transbrake, there will be other times at being at the low boost level which is when I would want to have that afr. I don't see the boost ve or timing table, but there is a boost enrichment table. I guess I can make the enable kpa higher to use the PE table and then go to BE table, but i'm not sure if that would work either for what I'm talking about.