Difference from stock tb & plenum on FI

Shibby50 · September 17th, 2008, 01:53 AM

I'll have some extra money in a week or two and i've been looking into a few budget mods $500ish or less. I'm running around 8-9lbs of boost on my procharger right now but i'll be upping it with a smaller pulley soon. Would i be looking at a noticeable gain with a 75mm tb and plenum over the stock since i'm F.I? or would I be better off getting something else?
Thanks

SWEET2KSTANG · September 17th, 2008, 04:18 AM

F.I. cars have more to gain with a t/b and plenum. the t/b is nice, but the plenum will yeild more. the stock plenum doesnt flow that well without wome work, aftermarkets are pretty good out of the box.

Shibby50 · September 17th, 2008, 11:44 PM

thanks, and bump for more opinions on brand and whatnot

03TropicGt · September 18th, 2008, 01:48 AM

Accufab

RyanGT · September 18th, 2008, 03:03 AM

accufab 75mm combo will give you a good gain. Worth while for any F/I car.

01brknGT · September 18th, 2008, 06:50 AM

well i just installed an accufab tb and plenum on my car and i just got full exhaust and cai and i noticed a great improvement on throttle response which makes it feel faster so i think it would make a huge improvement in your FI for sure.

Shibby50 · September 18th, 2008, 09:53 AM

What about a new maf? I'm going to be upping my boost and i think i'm on my stock one.

SWEET2KSTANG · September 18th, 2008, 02:08 PM

LMAF or sct 90mm MAF if you are going to upgrade. you will need a tune with either.

03_StangGuy · September 18th, 2008, 03:44 PM

it is possible to see a decrease in boost since the t/b and plenum flow better theres less restrictions. I had my t/b and plenum before i put my s/c on so Im not sure. maybe someone can confirm this. But its def worth it, I noticed a difference on the top end with my stock setup before the blower.

xACHILLESx · September 18th, 2008, 06:31 PM

01 GT Vortech at 10psi. With 75mm Accufab TB/PLenum i gained 10 rwhp. That was the only mod that was changed.

Shibby50 · September 18th, 2008, 07:28 PM

Originally Posted by xACHILLESx

01 GT Vortech at 10psi. With 75mm Accufab TB/PLenum i gained 10 rwhp. That was the only mod that was changed.

Nice, yeah i'll be putting a 3.2 pulley on down from my stock 3.85 so i'll be getting it tuned anyways. thanks for the info

StangAddiction · September 18th, 2008, 08:41 PM

Good luck...

Yeah TB and plenum should make a noticeable increase on an FI motor

RyanGT · September 18th, 2008, 09:33 PM

Generally its the exhaust that decreases the boost.

But even then you get gains. Its all about in and out, as you said boost is resistance. More air will get in, who cares what the actual boost number is. If its a pound lower but gives you 15 more horses, i would take the power

September 17th, 2008, 01:53 AM	#1
Shibby50 Newbie 2000 Mustang GT - Join Date: May 2008 Location: Joliet IL Posts: 39	Difference from stock tb & plenum on FI I'll have some extra money in a week or two and i've been looking into a few budget mods $500ish or less. I'm running around 8-9lbs of boost on my procharger right now but i'll be upping it with a smaller pulley soon. Would i be looking at a noticeable gain with a 75mm tb and plenum over the stock since i'm F.I? or would I be better off getting something else? Thanks __________________ 2000 GT Convertible Lowered 1.8in. Procharger P1SC 8lbs, Bassani X-Pipe, Flowmaster Mufflers, 42lb injectors, full sub-frame connectors and x-brace Winter mod list: Gears, stall, 3.2 pulley, 75mm tb & plenum, wideband, headers & ory

September 17th, 2008, 04:18 AM	#2
SWEET2KSTANG I Post Entirely Way Too Much 2000 mustang gt 11.79@115.83 Join Date: Oct 2006 Location: N.W. AR Posts: 5,027	F.I. cars have more to gain with a t/b and plenum. the t/b is nice, but the plenum will yeild more. the stock plenum doesnt flow that well without wome work, aftermarkets are pretty good out of the box. __________________ stock long block, bolt ons, slicks, and a little squeeze N/A-12.81@103.7 N2O-11.79@115.8 parting out 04 cobra, pm me for details

September 17th, 2008, 11:44 PM	#3
Shibby50 Newbie 2000 Mustang GT - Join Date: May 2008 Location: Joliet IL Posts: 39	thanks, and bump for more opinions on brand and whatnot __________________ 2000 GT Convertible Lowered 1.8in. Procharger P1SC 8lbs, Bassani X-Pipe, Flowmaster Mufflers, 42lb injectors, full sub-frame connectors and x-brace Winter mod list: Gears, stall, 3.2 pulley, 75mm tb & plenum, wideband, headers & ory

September 18th, 2008, 03:03 AM	#5
RyanGT Hardcore Enthusiast 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 1,200	accufab 75mm combo will give you a good gain. Worth while for any F/I car. __________________ 2000 Black convertible GT: KB 14psi, and other goodies...

September 18th, 2008, 09:53 AM	#7
Shibby50 Newbie 2000 Mustang GT - Join Date: May 2008 Location: Joliet IL Posts: 39	What about a new maf? I'm going to be upping my boost and i think i'm on my stock one. __________________ 2000 GT Convertible Lowered 1.8in. Procharger P1SC 8lbs, Bassani X-Pipe, Flowmaster Mufflers, 42lb injectors, full sub-frame connectors and x-brace Winter mod list: Gears, stall, 3.2 pulley, 75mm tb & plenum, wideband, headers & ory

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September 18th, 2008, 01:48 AM	#4
03TropicGt Enthusiast 2003 Mustang GT Join Date: Jul 2007 Location: Boston, MA Posts: 524	Accufab

September 18th, 2008, 06:50 AM	#6
01brknGT Regular 2001 Mustang GT Join Date: May 2008 Location: Travis AFB, Cali Posts: 254	well i just installed an accufab tb and plenum on my car and i just got full exhaust and cai and i noticed a great improvement on throttle response which makes it feel faster so i think it would make a huge improvement in your FI for sure.

September 18th, 2008, 02:08 PM	#8
SWEET2KSTANG I Post Entirely Way Too Much 2000 mustang gt 11.79@115.83 Join Date: Oct 2006 Location: N.W. AR Posts: 5,027	LMAF or sct 90mm MAF if you are going to upgrade. you will need a tune with either. __________________ stock long block, bolt ons, slicks, and a little squeeze N/A-12.81@103.7 N2O-11.79@115.8 parting out 04 cobra, pm me for details

September 18th, 2008, 03:44 PM	#9
03_StangGuy Hardcore Enthusiast Blown 03 GT Join Date: Jun 2007 Posts: 1,463	it is possible to see a decrease in boost since the t/b and plenum flow better theres less restrictions. I had my t/b and plenum before i put my s/c on so Im not sure. maybe someone can confirm this. But its def worth it, I noticed a difference on the top end with my stock setup before the blower. __________________ Accufab 75mm TB and plenum, Mac Prochamber and Cat-back, Novi 2000 intercoolered MGW shifter and 18x10 w 285 Nitto 555s for some grip. Was 400+

September 18th, 2008, 06:31 PM	#10
xACHILLESx Newbie Join Date: Nov 2007 Posts: 7	01 GT Vortech at 10psi. With 75mm Accufab TB/PLenum i gained 10 rwhp. That was the only mod that was changed.

September 18th, 2008, 08:41 PM	#12
StangAddiction Enthusiast 2000 Mustang GT Join Date: Jan 2007 Location: Virginia Beach Posts: 961	Good luck... Yeah TB and plenum should make a noticeable increase on an FI motor __________________ "peak hp doesn't mean ish... Its about the area under the curve mannn..."

September 18th, 2008, 09:33 PM	#13
RyanGT Hardcore Enthusiast 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 1,200	Generally its the exhaust that decreases the boost. But even then you get gains. Its all about in and out, as you said boost is resistance. More air will get in, who cares what the actual boost number is. If its a pound lower but gives you 15 more horses, i would take the power __________________ 2000 Black convertible GT: KB 14psi, and other goodies...

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