well i will be boosting in like a couple weeks to a month, depending on how funds go.Thing is i have a 2.5 DP but thinking about getting a 3inch, but my exhaust piping and muffler is a 2.5, i was wondering is anyone running with that set up? is it pretty restrictive according to tuning? if so i was thinking about either getting a 3inch DP and sticking with the 2.5 Exhaust or just sticking with the 2.5 DP and getting a Y pipe added on, or just get the 3inch DP with the Y pipe, so when it comes time to race just open it up, im not really wanting to spend more money on a 3 inch custom exhaust, if i was going to spend money on exhaust i rather use the money on a new/bigger DP, but just wondering if a 3inch DP with a 2.5 exhaust with a 2.5 muffler is really that restrictive, 1/2 inch makes that much of a difference??. TIA

 

https://honda-tech.com/zero...age=1

You can find good info here

 

damn, i guess it does make a difference

 

well that says it all for me 3" custom exaust now i wonder how much diference would it be with 3" DP as well

 

Thats only for that particular setup, you will see good gains but I doubt that much, just cross ur fingers.

 

so guessing just the extra half inch makes a difference

 

Look at it this way:

2.5" = 4.9 inches squared

3" = 7.075 inches squared

 

If you can weld and fab, then you can make your own DP back 3"+ exhaust from companies like jegs/jcwhiteny,summit, for less than $200. And that's T304 stainless, you just have to do your homework and look around for best prices.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mugencrxsir1 &raquo;</TD></TR><TR><TD CLASS="quote">If you can weld and fab, then you can make your own DP back 3"+ exhaust from companies like jegs/jcwhiteny,summit, for less than $200. And that's T304 stainless, you just have to do your homework and look around for best prices.</TD></TR></TABLE>

Yeah, but you need to factor in muffler and resonator(s) costs.

 

on myt first set up i was on a 60-1 with a 3" downpipe into 2.5" crush bent exhaust and a magnaflow muffler and i made 514hp...that was also on a skunk2 intake manifold..stock fuel rail.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid_Coupe &raquo;</TD></TR><TR><TD CLASS="quote">on myt first set up i was on a 60-1 with a 3" downpipe into 2.5" crush bent exhaust and a magnaflow muffler and i made 514hp...that was also on a skunk2 intake manifold..stock fuel rail. </TD></TR></TABLE>

niiice

 

ill sum it up for ya reallll quick

hx35 on ls/vtec
15psi
ramhorn mani

w/ 3" open dp....hit full boost about 4200rpm
w/ 3" dp to stock exh...full boost at about 5k

it makes a difference....a big one...think the bigger the pressure differential the faster your turbo is gonna spool....and also help the motor exhale the fumes and suck in some new ones

 

i think im just going to get a Y pipe added to the DP, just so i dont have to get a full custom 3 inch exhaust. good idea?

 

yep...best idea possible...all the power you want when you need it..and the quietnes to keep the cops away when your not playin