edge upgrade & custom tune questions

[double j]

my truck is a f150 stx super cab 4x4 with the 4.6L

my mods are
-volant cold air intake
-mbrp cat back 3.5" exhuast with single tail pipe
-helix power tower TB spacer
-295 70 17 tires
-edge evo (soon to bee gryphon)

i am going to upgrade my edge to a gryphon and get custom tunes. i was looking at the order form and seen that you can get custom tunes in several different octane ratings. is the higher octane going to make that much of a difference or is it just preference of what gas you want to put in your ride. i know that it will help a little to get higher octane. but is it going to make that much of a difference.
i am looking at getting the
-custom 87 tow
-custom 87 performance
-custom 93 performance
would i be wasting my money getting the 2 performance tunes. i usually run 87 in my truck.

also i seen on the order form there was a coice if you had catalytic converters or if you had deleted them. is this going to make a big difference. i have heard that if you take them off your truck will run like crap. i guess what i am asking does the custom tunes compensate for having your catalytic converters removed. if so i would like to remove them to get the most that i can out of my new gryphon when i get it. but dont want my truck to run like crap or use a tone of gas.

any help on this will be greatly apperciated. THANKS

[88Racing]

With you having a CAI those tunes look excellent.

My personal prefrence with cat removal is this. Leave them in place but if you want to delete them replace with high flo cats. At least you'll have something there just in case the emissions Nazis ever start poking around.

Hope that helps.

[double j]

thanks for the input 88. if i do take off my cats it should not be a problem there are no emissions around where i live. but you never know when they might start. do you know if it would cause any problems with the way my truck runs. also do you have any input on the octane rating that i had posted.

[88Racing]

Originally Posted by double j

thanks for the input 88. if i do take off my cats it should not be a problem there are no emissions around where i live. but you never know when they might start. do you know if it would cause any problems with the way my truck runs. also do you have any input on the octane rating that i had posted.

They can be removed and a mod done to the rear o2 sensors but I don't can't approve or disapprove of you doing this to your truck.

[double j]

well im just going to leave them on there. i dont want to mess anything up. thanks for your input once again.

[double j]

also do you know about the octane rating is it going to make a big difference