Quote:
Originally Posted by longshot270
I'm not exactly sure about the gains from it because I know someone who did that potato mod on a guy's jeep but it still drove home the same as before...but his exhaust was ported from rust which I assume removed all of the performance gains from the potato. 
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He probably did it wrong!
You are suppose to hammer it in with the end of a broom handle, you have to get it in there as far as it will go for max HP.