I just installed a set of SVO 24# injectors and BPS (another member on this site) did the reprogram at the same time. Huge difference and all for the better. Very smooth idle, excellent throttle response from idle, and the engine pulls like a frieght train! I was told by one of the big injector shops that the SVO Bosch produces a better spray pattern and improves the mixture formation over the Rochestor injector and I believe them.