Do I need t have my tune updated?
 

Corey, I know you are closed but I thought I'd post this here to see if my 87 Performance tune should be updated to reflect mods I have made. I modified the stock intake identical to the one Jack posted pics of in the forum. This may be on my original form I sent in when I ordered the custom tune last October but am not sure. I have now added a Magnaflow #11226 muffler, this is a 14" muffler compard to the 22" stock. The exhaust system is still in stock formation, no duals, eliminating cats, larger pipes, etc. Still is SISO. Thanks, I also sent this as an e-mail with all my info to check my tune configuration.

No need to have your tunes modified from you've already had done. The snorkel modification will work just fine with your current tunes and the muffler change doesn't require any further modifications either.

Hope this helps. :D