you will NOT believe this... dyno results

Unit 5302 · 11-24-2001, 04:17 PM

Yes the air/fuel ratio is between 12:1 and 13:1 throughout most of the test in all the runs.

The computer is at it's MAXIMUM ability to adjust for that kind of horsepower. You're asking it to compensate about 40% of it's normal injection cycle to keep the fuel ratio proper.

The 19lb/hr injector would be running at 98.5% of it's capability at 60psi to maintain a harmony with the stock injection cycle. It would also be at 77% of it's safe delivery capacity.

The 24lb/hr injector would be running at 78% of it's capabiltity at 60psi to maintain a harmony with the stock injection cycle. It would also be at 60% of it's safe delivery capacity.

The 30lb/hr injector would be running at 62% of it's capability at 60psi to maintain a harmony with the stock injection cycle. It would also be at 48% of it's safe delivery capacity.

He's asking the computer to adjust the same amount as if he kept the 19lb/hr injectors on the car and the stock FPR right now. The computer can only adjust so much. It's got some safety margin built in, but if that's exceeded, (which by the air/fuel ratio graph, looks like he's on the edge to me) his car will lose performance, and certainly fuel economy, etc.

It's overkill, and in this case too much isn't always a good thing.

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11-24-2001, 04:17 PM	#1
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Yes the air/fuel ratio is between 12:1 and 13:1 throughout most of the test in all the runs. The computer is at it's MAXIMUM ability to adjust for that kind of horsepower. You're asking it to compensate about 40% of it's normal injection cycle to keep the fuel ratio proper. The 19lb/hr injector would be running at 98.5% of it's capability at 60psi to maintain a harmony with the stock injection cycle. It would also be at 77% of it's safe delivery capacity. The 24lb/hr injector would be running at 78% of it's capabiltity at 60psi to maintain a harmony with the stock injection cycle. It would also be at 60% of it's safe delivery capacity. The 30lb/hr injector would be running at 62% of it's capability at 60psi to maintain a harmony with the stock injection cycle. It would also be at 48% of it's safe delivery capacity. He's asking the computer to adjust the same amount as if he kept the 19lb/hr injectors on the car and the stock FPR right now. The computer can only adjust so much. It's got some safety margin built in, but if that's exceeded, (which by the air/fuel ratio graph, looks like he's on the edge to me) his car will lose performance, and certainly fuel economy, etc. It's overkill, and in this case too much isn't always a good thing.