rven448

Nice looking mustang.

balockwood44

[QUOTE=jc5057;8555269]Well I have owned my 2015 GT automatic for a year now. I have felt for the last 6 months it needed a boost in power as just about everything on the road is just as fast as my GT or not faster.

So I went big got the Roush Phase 1 supercharger kit. I had to wait a month to get it as it was on back order and it took me and the wife 3 days to install it.

I can honestly say I could not be happier and with the Mickey Thompson 305/35/20 tires in the rear this thing is fast and gets off the line like it should. Stock 5.0 N/A has nothing compared to this now wow I blown away

Your car looks great man. I installed the same blower kit and totally agree; brand new car. I'm still on the stock PP tires and it's a bummer in 1st, 2nd...and 3rd gear! So I ordered some new wheels but am wondering about your experience with the 305s in the back. I do a fair amount of twisty roads and hit the track a couple times a year, so I'm worried I'll get rubbing with wide of a tire. I'm looking at doing a 275 up front. Have you had any issues with your setup? I'd like to install the ford racing track handling pack, but I can't find any info on clearance issues after dropping the car an inch and using 305s in the back. Any input would be appreciated.

black bart

jc5057, how is you auto trans holding up with the supercharger? Any trans mods? Appreciate any info you and other supercharged members can supply.

jc5057

here is all my engine has the roush phase 1 with. Open air box. Carbon fiber one pice drive shaft and magnaflow competition cat back exhaust and a roush tune. Also 305 comp 2 on the rear and i have 7 k miles on it super harged and drive it hard and fast no tranny problems or halfshaft problems solid. The auto is stronger then the manuel and i run 3.31 gears out back . You are 100 percent safe with the roush phase 1. Anything else will give you more power on the table and i am sure the risk of breaking somethimg is there. I am happy with the 670 Hp as it is a street car but if it was a track car i go another tune like Lund

jc5057

[QUOTE=balockwood44;8596295]i am rumning 275 35 20 ip front with 30535 20 in rear no rubiing anywhere but i have stock springs if you are lowered a inch you may have some rubbing for sure

darkmach1

If the wheels are offset properly you won't rub unless your car is slammed.

Auto won't have any issue with blower or twins but always recommend that you swap the fluid somewhat often. Fords lifetime fluid claim is BS.

69mach1377

Anybody's lifetime fluid claim is BS...it means the life of the transmission, not the owner, or the life of the warranty at the most. Not changing it will reduce its lifetime however.