What size piping do I need?
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From: Penguin in the fridge,, IA, USA
Still in the proccess of buying all my ****.
Since I have no previous experience with turbo setups, I need to know what size piping I need for my setup.
I will be running a stock d16z6 with a t25 and a "new style" 6" JRSC. Do i need to go with the 2.5" piping or will 2.25" be okay? I know my friend ran 2.5" on his 400 whp 99 gst so I'm assuming 2.25 will be okay for around 200 whp
Since I have no previous experience with turbo setups, I need to know what size piping I need for my setup.
I will be running a stock d16z6 with a t25 and a "new style" 6" JRSC. Do i need to go with the 2.5" piping or will 2.25" be okay? I know my friend ran 2.5" on his 400 whp 99 gst so I'm assuming 2.25 will be okay for around 200 whp
Thread Starter
Honda-Tech Member
Joined: Mar 2004
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From: Penguin in the fridge,, IA, USA
good ****. I'll probably try to go with the 2.25 since im trying to clear my foglights. hope they fit!
EDIT: whos got the best deals on pipe packages?
EDIT: whos got the best deals on pipe packages?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by niann »</TD></TR><TR><TD CLASS="quote">EDIT: whos got the best deals on pipe packages? </TD></TR></TABLE>
I/C piping kits are very overpriced, and most times you have to trim and cut a little to get it to fit your application anyways. I would buy some mandrel bends from kteller or jcwhitney, make your own piping, and save $100+
I/C piping kits are very overpriced, and most times you have to trim and cut a little to get it to fit your application anyways. I would buy some mandrel bends from kteller or jcwhitney, make your own piping, and save $100+
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crex23 »</TD></TR><TR><TD CLASS="quote">
I/C piping kits are very overpriced, and most times you have to trim and cut a little to get it to fit your application anyways. I would buy some mandrel bends from kteller or jcwhitney, make your own piping, and save $100+</TD></TR></TABLE>
It's not hard at all and saves you a bunch of money because piping kits usually do not fit too well anyways.
I/C piping kits are very overpriced, and most times you have to trim and cut a little to get it to fit your application anyways. I would buy some mandrel bends from kteller or jcwhitney, make your own piping, and save $100+</TD></TR></TABLE>
It's not hard at all and saves you a bunch of money because piping kits usually do not fit too well anyways.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Benjithx »</TD></TR><TR><TD CLASS="quote">you could probably do 2" to the intercooler and the 2.25" to the throttle body if 200ish whp is your goal
less pipe to fill = less lag
</TD></TR></TABLE>
Differences are VERY minimal
I got mine from JCWhitney. I got 4 2.5" Ubends and cut them as need with a sawzall. After marking them and labeling I went to the muffler shop and for $35 they welded them all together
Here are some pics:


less pipe to fill = less lag
</TD></TR></TABLE>Differences are VERY minimal

I got mine from JCWhitney. I got 4 2.5" Ubends and cut them as need with a sawzall. After marking them and labeling I went to the muffler shop and for $35 they welded them all together
Here are some pics:

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I would recommend doing 2" to the IC and 2.5" to the TB. Doing the 2.5" will not change any boost characteristics significantly and has the benefit of reducing turbulence entering the TB and exiting the IC since they are matched inside diameters (within a few mm anyway). Also no need to upgrade the cold side if you go big later.
not to jack the thread but im getting a td05 turbo hf manifold dsm ic wut size of piping should i use. this is on a d16z6 if it makes a difference. plus my goals are maybe 200hp just something to show some people up at the track yet a nice DD.
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Joined: Mar 2004
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From: Penguin in the fridge,, IA, USA
i will probably doing 2.25 all the way around. i went to jcwhitney.com but couldn't find any piping? i guess i didn't look good enough. can someone just throw up a link. i'd really appreciate it.
and since we're on this note...what size downpipe should i be using with the t25. 2.5"? 3"? who makes some quality downpipes besides Spoolin Perf.? I would think they go around for like $100-150...is that about right?
bump this **** up
and since we're on this note...what size downpipe should i be using with the t25. 2.5"? 3"? who makes some quality downpipes besides Spoolin Perf.? I would think they go around for like $100-150...is that about right?
bump this **** up
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