92 corvette tuning tips and questions.

[steveo]

That being said I know the injectors have been changed but I have no idea what brand or flow rate they are.

I have looked up the numbers on the injectors but it comes up with like 10 different options. how do I determine their flow rate so I can correct in the bin?

see? you've changed a fundamental fuel parameter without accounting for it in your bin, but you're calibrating a table that represents airflow. you will get better results if you start over and fix that constant. from your trims i'd say they are about 15% smaller than the stock injectors. so you could simply multiply your injector constant by 0.85 and get close. ....but this works better if we get proper specs. what numbers are on the injectors

[BlackW1dow]

see? you've changed a fundamental fuel parameter without accounting for it in your bin, but you're calibrating a table that represents airflow. you will get better results if you start over and fix that constant. from your trims i'd say they are about 15% smaller than the stock injectors. so you could simply multiply your injector constant by 0.85 and get close. ....but this works better if we get proper specs. what numbers are on the injectors

Okay so I have found which injectors I have. The number is 280 155 703. They seem to be Bosch injectors commonly swapped in Jeeps. I didn’t swap them out the previous owner did. Thank y’all for your help again, I am slowly learning this art.

[NomakeWan]

Okay so I have found which injectors I have. The number is 280 155 703. They seem to be Bosch injectors commonly swapped in Jeeps. I didn’t swap them out the previous owner did. Thank y’all for your help again, I am slowly learning this art.

So those injectors are from a bunch of Dodge products, primarily the Neon. They're 22.5 (23) lb/hr at 43.5 PSI. Stock '92 Corvette injectors were 22 lb/hr at 43.5 PSI. However, even though the 1992-1993 Corvettes came with 22 lb/hr injectors physically, the stock BIN is programmed for an injector rate of 23.79 lb/hr. Very curious choice by GM.

For comparison, the '94 Corvette came stock with 24 lb/hr injectors, and is programmed for a rate of 24.873 lb/hr.