is it ok

[shortrac]

is it ok 4 me 2 do the fpr shim mod since i have a tw chip????

[Fordman247365]

yes but you have to make sure to keep the pressure at or below 70 psi

[shortrac]

Originally Posted by Fordman247365

yes but you have to make sure to keep the pressure at or below 70 psi

if its at 70 when i start it wont increase while im driving will it

[no-tel-in]

no, it will actually drop

[Ryan Rønning]

Ya it goes down the more you push the throttle.