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Old 03-21-2014, 05:50 PM   #9
five.slow
Senior Member
 
Join Date: Oct 2013
Age: 39
Posts: 243
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all you really gotta do to make over 420 on a mt82 car is delete the cats and get a tune... 401 with a tune isnt all that, sorry man its normal. tune with off road h and flowmasters made 426 on my old car. gained like 3hp with the jlt.
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