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Old 11-23-2005, 06:38 AM
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Default 2.5" or 3" DP

2.5" or 3" DP and whats the diffrence since even thoght the turbo outlet is 2.5"
i made 454hp@16psi and 50shots dp with my h22
i'm using now 2.5" will gain more hp with 3"
Old 11-23-2005, 06:45 AM
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Default Re: 2.5" or 3" DP (CiViC SiR)

Search. Yes, a larger downpipe will give you more horsepower and quicker spool.
Old 11-23-2005, 06:49 AM
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Default Re: 2.5" or 3" DP (tokes1320)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tokes1320 &raquo;</TD></TR><TR><TD CLASS="quote">Search. Yes, a larger downpipe will give you more horsepower and quicker spool.</TD></TR></TABLE>
already searched
but why it creats more power if the turbo outlet is 2.5" same the down pipe
Old 11-23-2005, 06:56 AM
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Default Re: 2.5" or 3" DP (CiViC SiR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CiViC SiR &raquo;</TD></TR><TR><TD CLASS="quote">
already searched
but why it creats more power if the turbo outlet is 2.5" same the down pipe</TD></TR></TABLE>

Larger pipe = more flow = less backpressure = more power. Doesn't matter if the outlet is only 2.5", you're still trying to move a large volume of air and a bigger pipe is going to do it better.

Go unbolt your catback and see if it spools quicker and makes more power. Same deal as a bigger downpipe. The outlets on a lot of the turbos used on Supras arn't any bigger than 3" and they are making more power with 3.5" and 4" downpipes than they are with 3" DP's.
Old 11-23-2005, 06:58 AM
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Default Re: 2.5" or 3" DP (tokes1320)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tokes1320 &raquo;</TD></TR><TR><TD CLASS="quote">

Larger pipe = more flow = less backpressure = more power. Doesn't matter if the outlet is only 2.5", you're still trying to move a large volume of air and a bigger pipe is going to do it better.

Go unbolt your catback and see if it spools quicker and makes more power. Same deal as a bigger downpipe. The outlets on a lot of the turbos used on Supras arn't any bigger than 3" and they are making more power with 3.5" and 4" downpipes than they are with 3" DP's.</TD></TR></TABLE>
that should do it
thanks man
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