Anyone with DYNO results of removing H-Pipe?

Pokageek

Active Member

Jun 10, 2005

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MA, USA

Sep 26, 2006

#1

• Sep 26, 2006

• #1

Removing the factory catted pipe I mean. How about with mods like mine? Results?Thanks!

 

burtonrider787

New Member

Aug 29, 2006

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Southern New Hampshire

Sep 26, 2006

#2

• Sep 26, 2006

• #2

I don't have any numbers, but when I removed my stock H-pipe for an off-road one I notice a big difference

 

The Green GT

No 13 year olds are safe around me.

10 Year Member

Jan 8, 2006

1,269

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99

Louisiana

Sep 26, 2006

#3

• Sep 26, 2006

• #3

I just put my O/R H on and with no mufflers either, I could DEFINATELY feel a difference.

But sorry, no numbers.

 

JJ95GTID

Active Member

Sep 22, 2003

1,141

4

49

Phoenix, AZ

Sep 27, 2006

#4

• Sep 27, 2006

• #4

No actual dyno numbers but I do have track info. I went from a 14.623sec 1/4ET to 14.469sec 1/4ET with just the replacement of the stock 4 catted H-pipe to my current Pypes 2 catted X-pipe. I would be willing to say that 20-25hp is a safe bet.

 

Pokageek

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Jun 10, 2005

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MA, USA

Sep 27, 2006

#5

• Sep 27, 2006

• #5

Thanks. I went from the 4 catted to 2 catted H-pipe already and I am wondering what the difference would be between the 2 catted and no catted. I don't like the noise and the smell of the no cat. Well I do like the noise but I don't...mainly boominess. I am wondering if it is worth the trade-off.

 

The Green GT

No 13 year olds are safe around me.

10 Year Member

Jan 8, 2006

1,269

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99

Louisiana

Sep 27, 2006

#6

• Sep 27, 2006

• #6

Pokageek said:

Thanks. I went from the 4 catted to 2 catted H-pipe already and I am wondering what the difference would be between the 2 catted and no catted. I don't like the noise and the smell of the no cat. Well I do like the noise but I don't...mainly boominess. I am wondering if it is worth the trade-off.

Click to expand...

When I had my cats on and no mufflers it was loud as hell. I replaced the H-Pipe with the O/R on and it was just OBSCENE. No cats will make it a hell of alot louder.

 

94-302-vert

Active Member

Aug 16, 2004

1,947

2

36

NE CT

Sep 27, 2006

#7

• Sep 27, 2006

• #7

My car drones a LOT less without the cats... When i put them back on for emissions I feel the cut in power (they are high flow as well) and it drones like a mother...

O/R pipe all the way....

 

Pokageek

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Jun 10, 2005

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Sep 27, 2006

#8

• Sep 27, 2006

• #8

I heard the x pipe does not drone as much.

 

G

greenstang1313

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Jun 15, 2005

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Chelmsford, MA

Sep 27, 2006

#9

• Sep 27, 2006

• #9

i'd gaurantee you at least 15rwhp, maybe 20rwhp if you went no cats.

 

JJ95GTID

Active Member

Sep 22, 2003

1,141

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49

Phoenix, AZ

Sep 27, 2006

#10

• Sep 27, 2006

• #10

Pokageek said:

I heard the x pipe does not drone as much.

Click to expand...

Nope, no drone here. Going from high flow cats to O/R is only worth about 10hp on a naturally aspirated car. Maybe more on a forced induction car.

 

Pokageek

Active Member

Jun 10, 2005

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MA, USA

Sep 27, 2006

#11

• Sep 27, 2006

• #11

Maybe I will go X then. Anyone know if the 87-93 will fit the 94/95? Any different for a vert? I forget..

 

G

greenstang1313

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Jun 15, 2005

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Chelmsford, MA

Sep 27, 2006

#12

• Sep 27, 2006

• #12

i think the hangers are in different places. Anything is possible though.

 

JJ95GTID

Active Member

Sep 22, 2003

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Phoenix, AZ

Sep 27, 2006

#13

• Sep 27, 2006

• #13

My x-pipe doesn't use hangers because it is much lighter than the stocker.