Re: Re: Installed true duals, lost horsepower????

From: Mark Kuzia (flyboy01@mediaone.net)
Date: Thu Jul 12 2001 - 00:31:45 EDT


I'm pushing about 360 hp and 400+ ftlb of torque (300hp & 335tq @ rear
wheels) with a 360 that revs to 6000+ rpm, I talked to flowmaster and they
recommended 2 1/2. I really don't think it is too big, I suspect it may be
the O2 sensor.

Mark Kuzia
flyboy01@mediaone.net
http://people.mw.mediaone.net/flyboy01/home.html
1995 Dakota 13.79 @ 102.45 mph
~360ci, 5-spd, 4.11 LS (8 3/4 [3.90 SG] coming soon)
1994 Dakota 15.36 @ 91.56 mph
~318ci, 5-spd, 3.90 LS (bone stock, no mods)

----- Original Message -----
From: "George T. Geissinger" <ustow@ptd.net>
To: <dakota-truck@buffnet.net>
Sent: Wednesday, July 11, 2001 10:36 PM
Subject: DML: Re: Installed true duals, lost horsepower????

> I always try to tell my customers that too big is no good. Sorta like
water
> running down a pipe too big and the exhaust just sorts "rattles around" on
> its way out, no scaving effect. too small adds back pressure. I do dules
on
> V-6 and 318 in 2 or 2 1/4 if it is HOT.
> GEORGE!!
> ----- Original Message -----
> From: "Mark Kuzia" <flyboy01@mediaone.net>
> To: <dakota-truck@buffnet.net>
> Sent: Wednesday, July 11, 2001 10:06 PM
> Subject: DML: Installed true duals, lost horsepower????
>
>
> > I need some help from those of you who have installed true duals in your
> > Dakota. I had a set installed today and lost horsepower? I was down 2-3
> > tenths and about 2 mph in the 1/4 from last week.
> >
> > Its a 2 1/2" system, with dual Flowmaster 40 series Deltaflow with an
> H-pipe
> > and it dumps out in front of the right rear tire like the Lightnings do.
> The
> > bends are not true mandrel bends, but they are smooth.
> >
> > I am wondering about the O2 sensor, It is installed in the right pipe,
> > before the H-pipe. Does this affect how it reads? Please let me know
what
> > you did if you have a set on you Dak.
> >
> > Thanks,
> > Mark Kuzia
> > flyboy01@mediaone.net
> > http://people.mw.mediaone.net/flyboy01/home.html
> > 1995 Dakota 13.79 @ 102.45 mph
> > ~360ci, 5-spd, 4.11 LS (8 3/4 [3.90 SG] coming soon)
> > 1994 Dakota 15.36 @ 91.56 mph
> > ~318ci, 5-spd, 3.90 LS (bone stock, no mods)
> >
> >
> >
> >
>



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