I have a S/D 88 mustang and i have a couple mods, Off road X pipe, BBk Headers, Msd Ignition, Ported and polished stock headers, and a V1 vortech super charger boosting at 8 lbs. i dont have a cam but im having a really bad idle problem and im wondering if the supercharger could be to blame. any help, ideas, or direction?

 

You def. need a tune. However since your mods are minimal, the supercharger should not affect your idle. Check to make sure your MAF is securely tightened. Any air escaping will cause a terrible idle(happend to me).

 

I should also add that you should check for any vaccuum leaks. Make sure the clamps are securely tightened around the SC.

 

he doesn't have a maf, speed density.

Honestly you'll probably get more help if you post this question in the speed density section: https://mustangforums.com/forum/speed-density-carb-ssp-section-45/

Check this site out: http://www.muscularmustangs.com/iac.php
There are all the common causes for idle problems. Look into all of them, just ignore part 5 (cleaning the maf) as it doesn't apply to you.

 

Yea the car is speed density unfortunetly. Deffinitly thanks for the help though the site was very usefull

 

You shouldn't think it's unfortunate. Alot of people swear by speed density. If I had a standalone on my 5.0 I'd throw the mass air away in a heartbeat.

Did you get the idle problem fixed?