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Discussion Starter #1
I did the deckplate mod about a month ago and had no problems but when I install my flowmaster 50 series muffler it took about 3 tanks of gas but I notice a rattling nosie coming from my engine compartment. First thing I did was put the deckplate back in to see if it help and after about 2 tank the noise went away. Just woundering what it might have been. I have a 2004 ext cab with a 3.4 no other mods. :confused:
 

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didja check to see if you have a screw loose?, but seriously, did you reset the ECU by disconnecting the battery for 5 minutes? The MAF will recalibrate and give you a denser fuel charge because it is detecting a higher rate of flow. On a side note, I installed my muffler 2 days after I removed my mud flaps. I noticed a rattling noise too and it took me 2 weeks to figure out that it was the mudflap screw banging around every now and then...good luck!
 

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Thanks for the reply. I did disconnect the batter both time for quite some time but I sure it probably is something as simple as a loose bolt somewhere.
 
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