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Ok i got some good replys on what to do bout the exhaust but i just checked my email and flowmaster finally wrote me back...They have a American Thunder complete Catback system that ive looked at...Theres actually 2 and i dont know which one to purchase...There posted below...Now 1st ? is How is the american thunder system? And would it be cheaper to buy the super 44 single to duel system and get a mufflet shop fab some new pipes cuz i dout that would lead up to $600..Or am i wrong????On 1 of my replys i got word to get a Hypertech Programmer so now thats def in the works? how r the reviews on that? Any Problems?...Now today i get my k&N 63 series so after i try it out ill def post how its changed my ride for those who asked...now with The Magnaflow Universal Cats is there something i need to look 4 in paticular? I havent read alot bout them or anything really cuz im useing my Iphone as internet which sucks...Can someone repost a website on the reply to i can click on it one there useing and haveing good gains with? I really appreciate all the help...I left the import scene and now got this kickass truck ad what the best def... Chech these 2 sytemes out and tell me what u think?

http://www.flowmastermufflers.com/p..._result&search_in_description=1&keyword=17440

http://www.flowmastermufflers.com/p..._result&search_in_description=1&keyword=17439

Now is the W.B the only difference? and how do i measure that? Is it center of one wheel to the other? I got a 07 Silverado extended cab NBS if that helps any???
 

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The First link is for all 2007-2008 Silverados and Sierra's EXCEPT the EXTENDED CAB with 8 FOOT BED.
The other link is for that model.
$614 for flowmaster Nahh. Just go to your local muffler shop and they can weld one together for you for about 400 or under. The american thunder is a good muffler but I prefer the 40 series. I payed about 380 to have my local shop weld me a 40 series with dual 3" Pipes and 3 1/2" tips. So that's the way I would recommend going. It looks like the two kits flowmaster offers has 2 1/2" Pipes and 3"Tips.

The magnaflow cats depend on what size piping you decide to run. 2.5 or 3" Here's a couple links.

http://store.summitracing.com/partd...MPE-53006CA&N=700+4294838974+115&autoview=sku
http://store.summitracing.com/partd...MPE-94109CA&N=700+4294838974+115&autoview=sku

Here's a review of my programmer

http://www.gmtruckclub.com/forum/showthread.php?t=10413

Let me know if you have any more questions.

Also what is you main goal. Speed? Towing? HP? There's different mods for different goals.
 

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My main goal is just a mean sounding truck with better fuel...I def get great miles on trips but in town sucks...I really apprecciate all the help...After a lil research i wanna go for the Hypertech Max Energy Programmer...Great sugestions Bro..Nice ass truck by the way..
 

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Thanks. Yeah if your looking for a great sounding exhaust I have to say flowmaster has the best rumble. I finally got to take my truck on a road trip and racked up 20mpg with my new wheels and tires and programmer. I was thrilled. :great:
 
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