Ok so ive installed my GM 3 bar map sensor ready for high boost tune tomorrow and ive used the instructions in the link below, my map sensor and plug setup looks just like the one in the link also

http://www.hondata.com/tech3barmap.html

When ive gone to plug it in and start the car it idles very rough. Is this because the map sensor needs to be tuned in or does that mean ive installed it incorrectly?

I've kept the original plug so i can just plug it back in and that worked fine.