Does a Plenum make that much of a difference for our 996?

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Apr 29, 2009 | 03:21 PM

#16

Dharn55

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I guess we have a filter on this site. Sorry!!!

Apr 29, 2009 | 03:31 PM

#17

deckman

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Just having a little fun. We've all been there at one point, so don't worry about asking questions!

Apr 29, 2009 | 08:31 PM

#18

function12

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Champion plugs are a must too.

Apr 29, 2009 | 09:25 PM

#19

jcortney

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Quote:

Originally Posted by Doug996InKC

https://www.6speedonline.com/forums/...ke-plenum.html
Here ya go... everything you ever wanted to know, and more.

wow. That was an interesting thread. After reading it I'd buy one on a GP.

Apr 29, 2009 | 10:18 PM

#20

Slowcart

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I have installed aftermarket software,catback, underdrive pulley and IPD plenum and of this list of mods IMO the IPD plenum is the single best mod I have installed, so I am one of the believers.

Last edited by Slowcart; Apr 29, 2009 at 10:25 PM.

Apr 30, 2009 | 06:07 AM

#21

mathism

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Slowcart - you are the first I've seen with the underdrive pulley. What are your thoughts on that? I think they claimed +6HP. Can you tell any difference in the steering or A/C performance?

Apr 30, 2009 | 06:07 AM

#22

ls911

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Gained 42.73 hp from it and have the proof...just cant find the paper work right now....fn dog

Apr 30, 2009 | 06:22 AM

#23

luva966tt

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luva966tt is infamous around these parts

Dont really know how much the pelnum upgrade makes by themself. I had mine done along with the 24/18g setup so the power difference was extrem. I know it wasn't cheap just by looking at the part itself.

Apr 30, 2009 | 03:47 PM

#24

Slowcart

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Quote:

Originally Posted by mathism

Slowcart - you are the first I've seen with the underdrive pulley. What are your thoughts on that? I think they claimed +6HP. Can you tell any difference in the steering or A/C performance?

It's all good no downside but you can get more info from BBI at 714-843-0200

Last edited by Slowcart; Apr 30, 2009 at 03:49 PM.

Apr 30, 2009 | 03:55 PM

#25

kitw

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^ I've never been a fan of underdrive pulleys that remove the harmonic dampener on the crankshaft. It's not something that will manifest itself in a short term problem, but will long term.

Jan 17, 2012 | 01:19 AM

#26

timccloud

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Typeof Car wash you use has the Most Effect

Jan 17, 2012 | 06:59 AM

#27

FLi GLi

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Quote:

Originally Posted by stephan79

This tread has been so funny. Im waiting for someone to say that Chrome adds horsepower too...lol

Noob. EVERYONE knows chrome doesn't add HP.

Stickers do.

Jan 17, 2012 | 01:42 PM

#28

alam

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Kit

Hello Stephen,

I am thinking of getting the kit. What kind of gas mileage are you getting and any other tips or advice will be greatly appreciated.

I have a 2001 C2

Thanks
Alam

Jan 18, 2012 | 08:57 AM

#29

stephan79

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Quote:

Originally Posted by alam

Hello Stephen,

I am thinking of getting the kit. What kind of gas mileage are you getting and any other tips or advice will be greatly appreciated.

I have a 2001 C2

Thanks
Alam

Fuel Economy hardly changed if any. If your right foot isn't buried in the loud pedal shes very tame and fuel efficient, same as stock 17mpg+ but you open up the Turbo and start dumping fuel through the 440cc Injectors and she will go through it pretty fast.

2000+ is a breeze for the kit, high quality parts, lots of power. I have a 99 C4 which is a little trickier. Vivid Racing is having my ECM Custom Mapped vs. 2000+ cars can use Softronic.