SD to mass air, back to SD?

Unit 5302 · 02-08-2002, 10:59 PM

88workcar swapped to an E303 cam and did better than he did with the B303. The ONLY problems he ever spoke of the with SD computer and the B303 cam was a rich idle. Course, the B303 cam will be richer than the stocker. It took him about 5 minutes to get his E cam tuned right.

You can set fuel pressure to 60psi on most adjustable fuel pressure regulators. Stock is 39psi, that's a 54% increase of fuel pressure. That will also support nearly 350hp on the stock injectors, simulating the stock injector cycle, which is an increase of power on the stock injection cycle of nearly 50%.

The Speed Density computer is FAR FAR better at compensating with internal tables than a Mass Airflow Computer could ever hope to be. When's the last time you've seen a MAF car swap to 24lb/hr injectors and run perfect without a MAF sensor recalibration? I've seen SD handle it with not a hiccup. There's a reason for that, by the way. It's because SD cannot measure air flow. Since a MAF car can, it doesn't need such aggressive tables.

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02-08-2002, 10:59 PM	#1
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	88workcar swapped to an E303 cam and did better than he did with the B303. The ONLY problems he ever spoke of the with SD computer and the B303 cam was a rich idle. Course, the B303 cam will be richer than the stocker. It took him about 5 minutes to get his E cam tuned right. You can set fuel pressure to 60psi on most adjustable fuel pressure regulators. Stock is 39psi, that's a 54% increase of fuel pressure. That will also support nearly 350hp on the stock injectors, simulating the stock injector cycle, which is an increase of power on the stock injection cycle of nearly 50%. The Speed Density computer is FAR FAR better at compensating with internal tables than a Mass Airflow Computer could ever hope to be. When's the last time you've seen a MAF car swap to 24lb/hr injectors and run perfect without a MAF sensor recalibration? I've seen SD handle it with not a hiccup. There's a reason for that, by the way. It's because SD cannot measure air flow. Since a MAF car can, it doesn't need such aggressive tables.