This handy controller lets you change the launch rpm setting of the Programmable 7 Ignition Control manually when you're strapped in the car. The controller plugs into the MSD Programmable Ignition Control through the 9-pin harness. There are two control knobs, one for 1,000 rpm and the other for 100 rpm. The launch setting can also be adjusted from 3,000 to 12,500 rpm in 100 rpm increments. 7551$112.99 Don't see what you want? .......... Need help? Or, IF THERE IS NO ORDER BUTTON AVAILABLE on the part you want to buy, please call us TOLL FREE at 1-888-6 GO FAST(1-888-646-3278) Monday - Friday 8AM - 4:30PM Pacific Time and talk to one of our experienced Sales Agents. Some parts may not be legal for sale or use in California and other states on any polution controlled motor vehicles. Check your local laws for use. Copyright © GoFastParts.com all rights reserved. No part of this site may be reproduced without prior written consent.