Should i use 2.5 downpipe or 3" downpipe?
10-21-2004, 07:15 PM
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Should i use 2.5 downpipe or 3" downpipe?
I have a b18b that im going to boost 6 -8 lbs at first well i have a 6lbs spring in my tial wastegate for now but i was wondering should i go 2.5 inch for my down pipe or go 3 inches? if im making like 250 whp ?
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10-22-2004, 06:54 AM
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Re: (RyanCivic2000)
2.5" will be good enough, but...........
3" downpipe = less back pressure = more horsepower and faster spool up.
There's no reason not to go with a 3", if he can.
3" downpipe = less back pressure = more horsepower and faster spool up.
There's no reason not to go with a 3", if he can.
10-22-2004, 06:59 AM
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Re: (yellowturbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yellowturbo »</TD></TR><TR><TD CLASS="quote">thats one of my winter project to upgrade my 2.5 DP to a 3 inch DP !! Im sure thats it a good move ! </TD></TR></TABLE>
On your setup especially you should notice a big improvement.
On your setup especially you should notice a big improvement.
10-22-2004, 07:19 AM
#12
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Re: (RyanCivic2000)
I had an average of 30 whp gains when I swapped over to a 3" dp. My peak went up 60 hp, but torque only gained 10 ft/lb
BUT, I went from a 2.5 dp that went into a 2.25 catback. I now have a 3" dumped to the ground.
BUT, I went from a 2.5 dp that went into a 2.25 catback. I now have a 3" dumped to the ground.
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