99gtstang

really can't tell a big difference.. but i installed tune.. then went back and changed parameters.. turn off o2 in back... now will that reset tune i installed? do i need to go back and reinstall tune????

again i did have my wife and kid in the car ...... which we never ride all together in the stang.....which could be why i didnt feel a bigger difference... 200 lbs

sprostang

Once you install the predator tune, it`s in there untill you return the stock tune. If you just changed parameters then your fine.

silver03gt

It isn't a huge seat of the pants difference anyway, I use the factory hp tune and just set all the parameters myself, if you are running 93 then max out the timing and you will notice a difference, I run it at 4% over stock and I can still run 87 with a little more zip..... do a search to see how it does timing, it doesnt advance it in degrees like you would think, it advances it in percntage over stock, I set it at 4 in both rpm ranges and havent had a problem with 87

99gtstang

see thats what i wanted to do i always run 93.... but does it need to be dyno tested becuase i read you can fugg your motor up and i already have 109 K

sprostang

You can advance your timing all the way and run 93 and have no problems. Just dont mess with the air/fuel unless you have the car on a dyno where they will adjust everything for you.

99gtstang

thanks, will do that now... will that harm me any? this is my daily driver..

sprostang

You should be fine. But if you hear any pinging (with timing advanced all the way) while accelerating, then you`ll have to retard the timing a bit, but i`m sure it`ll be ok.

99gtstang

thanks

joeybutts

with your mods i would still dyno tune it...

wwmost

where does it say his mods? if he has boltons there is no reason for a dyno tune unless he wants one. its not needed.