will upgrading from 2.5" to 3" Y-pipe on FLP headers help?
will upgrading from 2.5" to 3" Y-pipe on FLP headers help? I have 382 MTI stroker, FLP headers, 2.5" "off road pipes", FLP 2.5" Y-pipe, QTECH cutout just after Y-pipe, and stock SS rear exhaust. Will going to a 3" Y pipe directly after headers (no off road pipes) help much (i.e., worth the $500 or so do do it right)?
SDB
SDB
Re: will upgrading from 2.5 But then you have to figure out how to get a 4" pipe over the rear axle, as well as deal with ground clearance problems. I've seen that done, but two three inch tubes will flow more and sound better than one 4" and have better ground clearance.
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
Re: will upgrading from 2.5 "but two three inch tubes will flow more"
Two 3" orifices will indeed flow more than one 4" orifice...barely. Now, make these pipes instead of orifices and wall friction comes into play. At some point of pipe length, the 4" begins to flow better than the two 3" pipes. Just food for thought. Either will work fine for his application.
Two 3" orifices will indeed flow more than one 4" orifice...barely. Now, make these pipes instead of orifices and wall friction comes into play. At some point of pipe length, the 4" begins to flow better than the two 3" pipes. Just food for thought. Either will work fine for his application.
TECH Resident
Joined: Apr 2003
Posts: 859
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From: here, ny
Re: will upgrading from 2.5 "But then you have to figure out how to get a 4" pipe over the rear axle"
Mufflex makes both 3.5" and 4" cat-back systems... also, one 4" pipe weighs less than two 3" pipes...
Mufflex makes both 3.5" and 4" cat-back systems... also, one 4" pipe weighs less than two 3" pipes...
