What TB/Plenum size?

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Jun 11, 2009 | 09:09 AM

#11

DreamerGT

5th Gear Member

Joined: Nov 2008

Posts: 2,084

From: austin,TX

I did all my intake mods at the same time and the car pulled harder in the upper rpm's.

Jun 11, 2009 | 12:55 PM

#12

SilverGT03

3rd Gear Member

Joined: Jan 2009

Posts: 602

From: Wellington, Florida

Quote:

Originally Posted by black35th

Yup the only complaint I've ever heard was about the TB, a couple people had to take a file to the hole where the throttle cable slips in.

Just a little heads up about LateModelResto, call them and make sure they have it in stock BEFORE you place the order online. I've tried to order numerous parts through them only to find out a week later that they are on backorder.

Thanks for the info, I'll keep that in mind before I do order

Jun 11, 2009 | 12:56 PM

#13

SilverGT03

3rd Gear Member

Joined: Jan 2009

Posts: 602

From: Wellington, Florida

Double Post...

Last edited by SilverGT03; Jun 11, 2009 at 01:00 PM.

Jun 11, 2009 | 03:29 PM

#14

ChalknCover

Sgt. Killjoy

Joined: Sep 2008

Posts: 2,090

From: DMV

I got the Accufab 75mm TB&P. I am happy with it, got it used, so can't complain. Plus if I go FI later on, im set. Biggest difference is in the throttle response.

Jun 11, 2009 | 06:41 PM

#15

Vovovovan

3rd Gear Member

Joined: Jul 2008

Posts: 891

From: Staten Island, NY

i'd go with 75mm. that's what i'm getting. also not sure about plenum, i think C&L looks pretty decent.

Jun 12, 2009 | 02:14 AM

#16

marcuslee842

3rd Gear Member

Joined: Mar 2005

Posts: 894

From: IL

Quote:

Originally Posted by Vovovovan

i'd go with 75mm. that's what i'm getting. also not sure about plenum, i think C&L looks pretty decent.

I have the C&L and it works great. You also get a bonus sound when u smash the gas which make u passengers ask "What the hell is that swoosh noise"?

Jun 12, 2009 | 07:59 PM

#17

ct_white_stang

4th Gear Member

Joined: Feb 2009

Posts: 1,046

From: CT

I have the Pro Products 75 tb and works great and was a good price for TB and Plenum.

Jun 12, 2009 | 09:54 PM

#18

cliffyk

TECH SAVANT

Joined: Dec 2006

Posts: 10,937

From: Saint Augustine, FL

Read this...

In theory the 75mm TB is overkill and could reduce charge velocity, however empirically it probably doesn't matter.

FWIW I intentionally got a 70 mm TB--if I ever decide to go f/i I'll buy a 75 or the BBK 78 and sell the 70 for $60 on ebay for a whopping $30 "loss"...

Jun 13, 2009 | 11:07 AM

#19

JoelT2855

Joined: Jun 2009

Posts: 17

From: michigan

I really like the Professional products plenum and throttle body.. no complaints for the money..

Jun 13, 2009 | 11:42 AM

#20

Sxynerd

6th Gear Member

Joined: Feb 2006

Posts: 11,786

From: Virginia

A stock long block w/ exhaust manifolds, o/r H, dronemaster, 75mm tb, and C&L plenum made 260rw in my car. With the addition of a V2, Innercooled and 10lbs at the manifold I made 440rw.

If it does decrease charge pressure and does hurt performance I would say that it's nominal. I'm sure anythings Better than stock but I don't believe there's much gained from the larger TB except just a few hp when the engine is still close to stock trim.

These engines need everything working together to produce good numbers. Any which way (but Loose) 70/75 or 78 it'll works itself out in the end, if you keep on modding your car.

Last edited by Sxynerd; Jun 13, 2009 at 12:31 PM.