Filed under: 2003 Ford Mustang (Stang)
and the performance mod i bought were the BBK underdrive pulleys! my friend has em on his 04 gt and got 9.3 more RWHP on the dyno. so im going to try them.
ill update everyone on the performance when i install them! they should arrive on tuesday or wednesday and i should have them in, in a couple weeks.
Vote: budget= $500
1) SLP o/r x pipe w/ MIL's
2) SCT performance tuner
3) 70mm throttle body and throttle body spacer
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