4" or straight pipe
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4" or straight pipe
Anyone know which mod is better. 4" or leave the 3 1/2 and straight pipe it. I know which is less expensive is it worth the extra $400. I've put the 6637 in, not much difference.
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From: Dallas-Ft. Worth
I paid a hair under $500 for my SS 4", but you can get an aluminized system for $300 -- less if you look around. The aftermarket systems are far less restrictive than straight piping the stock system because they're mandrel bent. The non-mandrel bent 3.5" is okay with the straight pipe if $$$ are a major concern, but when you hear an opened up 4 or 5" system, there's no comparison. 
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Originally Posted by Izzy351
I paid a hair under $500 for my SS 4", but you can get an aluminized system for $300 -- less if you look around. The aftermarket systems are far less restrictive than straight piping the stock system because they're mandrel bent. The non-mandrel bent 3.5" is okay with the straight pipe if $$$ are a major concern, but when you hear an opened up 4 or 5" system, there's no comparison.
what about a pre-filter for the 6637, is it a must?
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Originally Posted by Izzy351
I paid a hair under $500 for my SS 4", but you can get an aluminized system for $300 -- less if you look around. The aftermarket systems are far less restrictive than straight piping the stock system because they're mandrel bent. The non-mandrel bent 3.5" is okay with the straight pipe if $$$ are a major concern, but when you hear an opened up 4 or 5" system, there's no comparison.
http://home.comcast.net/~kwikkordead...ent_return.mp3
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From: Dallas-Ft. Worth
Originally Posted by Jzinkiewicz
I upgraded to the 6637. I had to cut the old bottom half of the stock air box to get it to fit so the hood would shut. Question: what do you do with the water sensor and the other little sensor that was inside the old, now removed, air box?
what about a pre-filter for the 6637, is it a must?
what about a pre-filter for the 6637, is it a must?
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Originally Posted by Kwikkordead
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Originally Posted by strokin_it7.3
Well, i wouldn't say "nothing"....
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Originally Posted by Izzy351
I'm not sure which one you're calling the "water sensor". The little one is the AIT (Air Intake Temp) sensor and it can be zip tied at a convenient point (most of us tie it to the master cylinder). The FilterMinder can be tossed -- you can see the filter every time you open the hood. But there are methods for keeping it if you want. I tossed mine in the can and taped up the connector.
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