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Hey guys I am goin to upgrade my intake to a BBK fenderwell cold air intake and a 70mm Throttle body. Do i need to upgrade my mass air too? and is 70mm t/b too big for a mildly modded engine or will it be fine?
 

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Hey guys I am goin to upgrade my intake to a BBK fenderwell cold air intake and a 70mm Throttle body. Do i need to upgrade my mass air too? and is 70mm t/b too big for a mildly modded engine or will it be fine?
70mm isn't TOO big for a slightly modified engine, but 65mm would be about the right size... Either one will work fine though, and the 70mm will come in handy when you start getting into more mods.

You will want a MAF that is the same size or a little bigger than your throttle body. The stock FOX MAF's are 55mm or so...
 

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You don't have to get a bigger mass air, but it'd be better. The inlet tract is only as good as the smallest section and a stock 55mm mass air would be it.

A 70mm would work fine, it isn't like a carb where it can be too big and cause problems. The engine can ingest just so much air, regardless of how big the throttle body is.
 
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Discussion Starter #4
the smallest mass air i could find is 73mm.. is this too big??

oh and another thing, i was taking off my t/b and coolant started leaking out, so coolant runs thro the egr spacer and t/b? do i clamp the hoses goin into the egr spacer when taking it off and puttin the new t/b on?
 
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Ok so i continued my search and the smallest i could find was the 73mm, is that too big matched with a 70mm throttle body??
 

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Ok so i continued my search and the smallest i could find was the 73mm, is that too big matched with a 70mm throttle body??
That will work perfect. :bigthumbsup
 
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Sweet! thanks allot man. Another thing i didnt know that coolant flowed thro the t/b and egr plate, should i just clamp off the hose when taking it off?
 

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Sweet! thanks allot man. Another thing i didnt know that coolant flowed thro the t/b and egr plate, should i just clamp off the hose when taking it off?
Umm... I don't know, I didn't run into that problem when I was changing my intake. :headscratch:

I do think that coolant runs through the FOX EGR spacers though. :headscratch::headscratch:
 
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Discussion Starter #9
oh alright i forgot for a second you had a sn95 with the 5.0
 

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