This is topic Stock h pipe on tuned 331 in forum Tech Talk at Northern California Ford Owners  .


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Posted by threethirty1 (Member # 7814) on :
 
i have 331 thats been tuned with a 0/r x if i put my stock 4 cat h pipe on how will it run? I think a little rich. How much hp loss? Moving 2 LA and want to quiet it down its way 2 loud. thx
 

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Posted by street_illegal_stang (Member # 1554) on :
 
you'll lose some power but not a lot(2.25") bottle neck. how bout you put tails pipe back on the car ,that will tame the loudness if you running dumps/donkey dix. besides everyone in la and there brother drives a chevy or gmc truck with a 3" flowmaster
that sounds like a ups truck on steroids or a
v-dub with 8 cyl. -i wouldn't be to concerned .just don't stand on the gas between intersections so cops can not only hear you but see you do it.
 

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Posted by 92stangLX (Member # 3252) on :
 
I'm guessing that it will throw the tune off a bit AND you will loose a bunch of power. Remember you are going from 2 1/2 pipes and no cats to 2 1/4" pipes and FOUR cats. I would suggest getting an aftermarket H-pipe with high flow cats. You will loose some power but not as much as going back to stock. It will definitely quite the thing down too.

I had the same problem. My offroad X was way too loud.
 

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Posted by Hungry Hippo (Member # 537) on :
 
the tune should be ok, but you will lose noticeable power
 

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Posted by 91fox (Member # 7842) on :
 
stock h-pipe is going to choke the shit out of that 331, especially if you got an HCI on it. even on a stock motor you will notice a difference between stock h-pipe and an h-pipe with out cats.
 

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Posted by warhorse58gt (Member # 7702) on :
 
i run bassani xpipe with cats and 2 chamber flows and tips out the back. and i do lose a lil power but, it's no loud at all. of course its 2 1/2 all the way threw.
 

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Posted by 166 Merlot (Member # 1549) on :
 
when i put my stock pipe on for smog, it felt like I lost 50hp.
 

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Posted by threethirty1 (Member # 7814) on :
 
moving 2 la and just dont want to cause 2 much attention to myself. what would u guys do?
 

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Posted by BUKSING (Member # 6594) on :
 

quote:

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Originally posted by threethirty1:
moving 2 la and just dont want to cause 2 much attention to myself. what would u guys do?

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not worry about de-modding your ride and rep nor cal.
 

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Posted by Hungry Hippo (Member # 537) on :
 
get some quieter mufflers and/or catted X
 

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Posted by savyGT (Member # 7921) on :
 

quote:

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Originally posted by BUKSING:

quote:

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Originally posted by threethirty1:
moving 2 la and just dont want to cause 2 much attention to myself. what would u guys do?

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not worry about de-modding your ride and rep nor cal.

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