How many of you have 450+hp with a 3" full exhaust (minus cat).
#1
Honda-Tech Member
Thread Starter
Join Date: Nov 2001
Location: Miami, FL
Posts: 1,992
Likes: 0
Received 0 Likes
on
0 Posts
How many of you have 450+hp with a 3" full exhaust (minus cat).
I hope there are alot of you out there because I cant find 3.5" mandrel bent exhaust. Im thinking of getting a Kteller 3" exhaust, 3" dowpipe and 3.5" (5" x 8") magnaflow muffler from Jegs.
Im running 14 psi on a SC61 9:1 compression B18c built motor. I have a 2.5" dowpipe to 2.25" cat back exhaust and a stock IM that I think are the reasons for my low numbers (see sig). Also hondata is tuned pretty conservative 11:1 a/f or 10.5:1 a/f on boost if i remember correctly. Im going to get those things changed and put springs and retainers in the head. Im shooting for 25 psi - 28 psi (450hp+ I hope) using the new full 3" exhaust. Just wondering now if the 3" is adequate and/or if goals are attainable
Modified by Turbo Chris at 3:11 PM 6/19/2004
Im running 14 psi on a SC61 9:1 compression B18c built motor. I have a 2.5" dowpipe to 2.25" cat back exhaust and a stock IM that I think are the reasons for my low numbers (see sig). Also hondata is tuned pretty conservative 11:1 a/f or 10.5:1 a/f on boost if i remember correctly. Im going to get those things changed and put springs and retainers in the head. Im shooting for 25 psi - 28 psi (450hp+ I hope) using the new full 3" exhaust. Just wondering now if the 3" is adequate and/or if goals are attainable
Modified by Turbo Chris at 3:11 PM 6/19/2004
#3
Honda-Tech Member
Join Date: May 2001
Location: Midwest
Posts: 5,698
Likes: 0
Received 0 Likes
on
0 Posts
Re: How many of you have 450+hp with a 3" full exhaust (Casey)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Casey »</TD></TR><TR><TD CLASS="quote"> would you make more power and or spool quicker with 3.5"? thanks</TD></TR></TABLE>
yes, and with no exhaust you would make more still.
yes, and with no exhaust you would make more still.
#5
Honda-Tech Member
Thread Starter
Join Date: Nov 2001
Location: Miami, FL
Posts: 1,992
Likes: 0
Received 0 Likes
on
0 Posts
Re: How many of you have 450+hp with a 3" full exhaust (espanol)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by espanol »</TD></TR><TR><TD CLASS="quote">i made 489 on 19 psi w/ a greddy 2 3/4 exhaust.</TD></TR></TABLE>
ahh.. good to know
ahh.. good to know
#6
Honda-Tech Member
Join Date: Jul 2002
Location: Tri Cities Diddy, IL
Posts: 1,665
Likes: 0
Received 0 Likes
on
0 Posts
Re: How many of you have 450+hp with a 3" full exhaust (Turbo Chris)
I think SP engineering just started making 3.5" exhausts for civic and integras.
Trending Topics
#8
Honda-Tech Member
Re: How many of you have 450+hp with a 3" full exhaust (minus cat). (Turbo Chris)
i made 534whp on 3" with 3 mufflers.a customer of mine made 443whp at 20 psi with 2.5"
#9
Member
Join Date: Oct 2002
Location: Bloomington, IN
Posts: 1,612
Likes: 0
Received 0 Likes
on
0 Posts
Re: How many of you have 450+hp with a 3" full exhaust (turbotypeR)
i made 644whp in my old supra with a 2.75" midpipe and the rest full 3"....3" will be plenty for most setups
#10
HT White Ops
Re: How many of you have 450+hp with a 3" full exhaust (gritsak)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gritsak »</TD></TR><TR><TD CLASS="quote">i made 644whp in my old supra with a 2.75" midpipe and the rest full 3"....3" will be plenty for most setups</TD></TR></TABLE>
I think that might end the discussion right there.
I think that might end the discussion right there.
#11
Honda-Tech Member
Re: How many of you have 450+hp with a 3" full exhaust (rochesterricer)
3 inch is more then enuff for you, but if were on the topic of Supras i have witnessed Rados Supra do 788whp on a 3inch exhaust.
#13
HT White Ops
Re: How many of you have 450+hp with a 3" full exhaust (Casey)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Casey »</TD></TR><TR><TD CLASS="quote">but assuming bigger is better, a car making 400whp on a 3" will make more with a 3.5 correct</TD></TR></TABLE>
The law of diminishing returns would probably begin to apply.
The law of diminishing returns would probably begin to apply.
#15
HT White Ops
Re: How many of you have 450+hp with a 3" full exhaust (Casey)
Well then, I guess its up to you.
You might also want to consider that it may limit muffler selection, and I don't know if they make resonators that big. You may have to put up with a raspy exhaust note.
You might also want to consider that it may limit muffler selection, and I don't know if they make resonators that big. You may have to put up with a raspy exhaust note.
#16
Honda-Tech Member
iTrader: (5)
Re: How many of you have 450+hp with a 3" full exhaust (rochesterricer)
it has a dynamax muffler and a small resonator...there are tons of turbo diesel duallys running around with 4" mandrel exhaust and turbo honda in general arent what id call raspy. sounds not really an issue, just dont wanna hear open dp all the time
Thread
Thread Starter
Forum
Replies
Last Post
b18sihatch
Forced Induction
2
06-02-2006 06:04 AM
IntegraGSR311
Forced Induction
13
04-16-2005 05:30 PM