Make installing or removing your JB4 on Cadillac and GM applications quicker and cleaner with these plug-and-play MAP sensor bypass extension harnesses from Nforcd. Designed for JB4 and similar piggyback tuning systems, they let you access and bypass the lower MAP sensor without reaching into tight spaces.
- Plug-and-play MAP sensor extension harnesses for Cadillac and GM JB4 setups
- Bypass the hard-to-reach lower MAP sensor by simply joining the two connectors
- Ideal for faster installation and removal of JB4 and compatible piggyback tuners
- Custom extensions built for Cadillac/GM MAP sensor connectors
- Supplied as a pair
- Contents: 2 x Cadillac/GM JB4 MAP sensor bypass extension harnesses
See the extensions in use at 3:26 in this short video: Watch demo.
Order your MAP sensor bypass extensions from Nforcd with confidence. If you would like professional installation of JB4 or other piggyback systems, fitting is available through Nforcd in Warwickshire. Request a quote via Sales@nforcd.com.