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1986 6.5 NA hmmwv cat delete

ryanruck

Active member
427
46
28
Location
Cincinnati, OH
I have no idea really.....D (all of the above) lol
Trick question! There is no catalytic converter! :mrgreen:

Only a muffler. And if you're looking to run a straight pipe, your best bet is to just take it to an exhaust shop and have them fab you up something to take the place of #7, the muffler assembly.
 

donquijote

Active member
166
36
28
Location
Louisiana
i've run without the y pipe and with the pipe minus muffler and it's annoyingly loud both ways. This was on a 6.5NA... I think it sounds just right with the exhaust system intact.
 
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