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#4041180 - 12/29/19 01:36 AM Removing comb from DBW TB gasket
CommanderCody Offline
Member

Registered: 02/10/18
Posts: 196
Loc: USA
Searching around it seems a simply mod is to cut the comb vanes out of the DBW throttle body gasket/spacer. Has anyone had any issues with performing this mod? From what I have read that the main purposes for the gasket vanes is to quiet the intake noise and introduce a more gentile off-idle transition, IE make off idle sluggish to make driving easier for noobs.
_________________________
2008 P71 EX-National Park Service, throttle comb delete, Jmod, passenger airbag switch, splash guards, police trunk pack, Gamber Johnson floor plate, Havis console, and Tuffy cup holders.
1987 Buick Regal Limited with SBC V8 swap, TES headers, electronic Qjet, ZZ4 chip, THM200-4R 4 speed trans, 3.73 ratio posi rear end, and KYB shocks.
2002 Ford Ranger 4x4 4L
1946 Farmall Model A tractor with 12v alternator upgrade and electronic ignition.

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#4041192 - 12/29/19 08:41 AM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
2004_p71 Offline

no replacement for displacement
Posting Addict

Registered: 09/04/03
Posts: 15763
Loc: Quebec Canada
m

To each their own I guess but I dont see any benefit on doing it .
_________________________


new best time 13.079 @ 105 1.8 60'

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#4041308 - 12/30/19 12:10 AM Re: Removing comb from DBW TB gasket [Re: 2004_p71]
CommanderCody Offline
Member

Registered: 02/10/18
Posts: 196
Loc: USA
Originally Posted By 2004_p71
m

To each their own I guess but I dont see any benefit on doing it .


According to some older posts on this forum, as well as some I found on Mustang and Explorer forums, removing the vanes from the gasket is supposed to improve throttle response for DBW cars. Mainly around off idle and the first 1/3 range of throttle opening. Only issue I have seen reported is that it causes a temporary higher idle until the computer relearns the throttle. Just wondering if there was anymore info about performing this mod?
_________________________
2008 P71 EX-National Park Service, throttle comb delete, Jmod, passenger airbag switch, splash guards, police trunk pack, Gamber Johnson floor plate, Havis console, and Tuffy cup holders.
1987 Buick Regal Limited with SBC V8 swap, TES headers, electronic Qjet, ZZ4 chip, THM200-4R 4 speed trans, 3.73 ratio posi rear end, and KYB shocks.
2002 Ford Ranger 4x4 4L
1946 Farmall Model A tractor with 12v alternator upgrade and electronic ignition.

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#4041318 - 12/30/19 06:47 AM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
theperfectdrugsk Offline

Climber

Registered: 10/14/08
Posts: 907
Loc: Raleigh, NC
Can't say I've ever heard of it... These vanes are in the stock throttle body? Been forever since I had the zip tube off in mine, so I can't picture it.
_________________________
not old...just cranky

2007 P71 180k, fighting entropy
2015 Prius, wife's car, and i like more than i should is hot garbage but gets good mileage

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#4041330 - 12/30/19 11:02 AM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
CommanderCody Offline
Member

Registered: 02/10/18
Posts: 196
Loc: USA
Its the gasket that goes between the throttle body and plenum that has the vanes.



Here is one old post about removing the vanes.

https://www.crownvic.net/ubbthreads/ubbthreads.php?ubb=showflat&Number=3327609#Post3327609


Edited by CommanderCody (12/30/19 11:09 AM)
_________________________
2008 P71 EX-National Park Service, throttle comb delete, Jmod, passenger airbag switch, splash guards, police trunk pack, Gamber Johnson floor plate, Havis console, and Tuffy cup holders.
1987 Buick Regal Limited with SBC V8 swap, TES headers, electronic Qjet, ZZ4 chip, THM200-4R 4 speed trans, 3.73 ratio posi rear end, and KYB shocks.
2002 Ford Ranger 4x4 4L
1946 Farmall Model A tractor with 12v alternator upgrade and electronic ignition.

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#4042036 - 01/03/20 01:01 PM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
CommanderCody Offline
Member

Registered: 02/10/18
Posts: 196
Loc: USA
Nobody knows more about this? Guess the old posters who brought this up must be MIA. Some of the old threads mention just cutting the bottom comb with the bar off. Other posts mentions removing both lower and upper combs. Anyone know which is best?
_________________________
2008 P71 EX-National Park Service, throttle comb delete, Jmod, passenger airbag switch, splash guards, police trunk pack, Gamber Johnson floor plate, Havis console, and Tuffy cup holders.
1987 Buick Regal Limited with SBC V8 swap, TES headers, electronic Qjet, ZZ4 chip, THM200-4R 4 speed trans, 3.73 ratio posi rear end, and KYB shocks.
2002 Ford Ranger 4x4 4L
1946 Farmall Model A tractor with 12v alternator upgrade and electronic ignition.

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#4042060 - 01/03/20 05:25 PM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
IPreferDIY Offline
Over the Hill

Registered: 05/12/15
Posts: 1082
Loc: Canada
I have no idea what the combs are intended for, but the gasket itself is relatively cheap (especially if you can get a clearance one from RockAuto) and easy to replace, so being a guinea pig wouldn't cost you much. The gasket seems to be reusable, so you could presumably put the original back in if there's an issue.

In terms of air flow, there must be some restriction with all the surface area being encountered. Dunno if removing the combs would be comparable to increasing the TB size, but the latter was definitely worth it for my 2000 MGM.
_________________________
2000 Grand Marquis LS HPP, a hand-me-down in 2008 with 128,000 km; 180,000 km as of May 2015
mods: air filter box 'tuba', headlight relay harness, J-mod (around 186,350 km), 70mm throttle body, KYB Gas-A-Just shocks, aluminum driveshaft, ARA3 PCM

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#4042156 - 01/04/20 02:12 PM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
2004_p71 Offline

no replacement for displacement
Posting Addict

Registered: 09/04/03
Posts: 15763
Loc: Quebec Canada
Originally Posted By CommanderCody
Nobody knows more about this? Guess the old posters who brought this up must be MIA. Some of the old threads mention just cutting the bottom comb with the bar off. Other posts mentions removing both lower and upper combs. Anyone know which is best?


please do not take this personal but it,s only a freaking gasket on a 250 hp motor, do not expect that much of a difference on removing the comb. Every panther before 04 didnt have one and my only guess is that 05 + got them to help with the flow because the tb act like the IAC .

if you want results change the plenum for an accufab and get a 75mm tb if you can , you will see great results with that .
_________________________


new best time 13.079 @ 105 1.8 60'

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#4042194 - 01/04/20 09:37 PM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
dixiebandit69 Offline
5.4 Club
Member

Registered: 01/17/12
Posts: 318
Loc: Texas
From what I have read, those fins were put in place to reduce part-throttle noise that might offend the delicate sensibilities of John and Jane Q. Public.

For the record, I read about this from a Ford engineer who put those same fins on the throttle body gasket of the 5.0/ Coyote engines. That was in Hotrod Magazine, back when that magazine used to be good.
_________________________
2007 Grand Marquis LS: 5.4 swap, 9.9:1 compression ratio, Comp XE268s, NPI pistons, PI heads ported by me, Accufab upper plenum, 75mm DBW throttle body, Factory PI intake with Chinese spacers, CVPI dual exhaust, CVPI torque converter, CVPI air-box and zip tube, J-Mod, 3.55 gears, FMS Trac-Loc differential
17" Dorman CVPI steelies, BFG Comp T/A 255/45 R17s

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#4042342 - 01/06/20 12:05 PM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
CommanderCody Offline
Member

Registered: 02/10/18
Posts: 196
Loc: USA
As I said, this mod does not provide more HP. It just helps to reduce some of the DBW lag. Lets face it, DBW generally has response lag similar to early turbo charged cars. Partly by design to make driving easier and safer for poor drivers. Car engineers view typical drivers as complete idiots and design cars with nanny features. Besides making the intake more quite, the vanes are designed to create a off idle lag to create a gentile throttle tip in.

Since the gaskets are $7 from Rockauto, I will try removing all the vanes and see what happens. Looking at some of the older posts, you should really do a computer reset after modifying the gasket to make the car idle normally sooner.

I would like to do a TB and plenum upgrade, but my hotrodding budget is allocated to my Regal this spring which needs new front suspension bushings as well as spring and brake upgrades while its apart. The gasket for my CVPI is just a stop gap until more funds are available. Plus I don't have a drill press for the modifying a Ford 75mm DBW TB. Even then, they are only good for 5 more HP according to MO tunes.


Edited by CommanderCody (01/06/20 12:07 PM)
_________________________
2008 P71 EX-National Park Service, throttle comb delete, Jmod, passenger airbag switch, splash guards, police trunk pack, Gamber Johnson floor plate, Havis console, and Tuffy cup holders.
1987 Buick Regal Limited with SBC V8 swap, TES headers, electronic Qjet, ZZ4 chip, THM200-4R 4 speed trans, 3.73 ratio posi rear end, and KYB shocks.
2002 Ford Ranger 4x4 4L
1946 Farmall Model A tractor with 12v alternator upgrade and electronic ignition.

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#4045004 - 01/27/20 03:03 AM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
2010mgm2010 Offline
Rookie

Registered: 08/30/17
Posts: 56
Loc: ss
every time when i clean the throttle body
i wonder if its a restriction or work as throttle body spacer form factory to increase and smooth airflow.

from what i read from the post i will give it a shot
and remove it
i want all the intake airflow and noise laugh
_________________________
2010 Grand Marquis Bolt ons
Obx headers with 2.5" Exhaust
75MM TB form 5.4 3v
custom intake 6" kn with 80mm maf housing to cpvi zip tube
Trickflow plenum
3.55 LCD gears

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#4045014 - 01/27/20 09:28 AM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
Raven238 Offline
Over the Hill

Registered: 09/19/10
Posts: 1401
Loc: Beantown, MA
If it’s anything like hvac, they reduce turbulence and noise. I see those on newer units I install.
_________________________


97 P71 187K milesSOLD

03 TC Executive 142K.
70mm Tuberculosis, Projectors refit, LED refit, some other kind of refit, something something something....something.

03 P71 225XXX miles
Marauder Cluster Swap,Sniper Tuned, Side Blinker Mod, Headlamp Upgrade pictorial
Town Car Projector Refit

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#4045186 - 01/28/20 01:04 PM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
2010mgm2010 Offline
Rookie

Registered: 08/30/17
Posts: 56
Loc: ss
updated
i did it guys yesterday
it seems truly increase throttle response and sound
i feel its pull harder 1/4-3/4 throttle
but i find out why the ford engineers made it
to smooth tipin - tipout of throttle
now when i let off the throttle i feel rpm decreases faster
im OK with that
_________________________
2010 Grand Marquis Bolt ons
Obx headers with 2.5" Exhaust
75MM TB form 5.4 3v
custom intake 6" kn with 80mm maf housing to cpvi zip tube
Trickflow plenum
3.55 LCD gears

Top
#4045474 - 01/30/20 11:28 AM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
CommanderCody Offline
Member

Registered: 02/10/18
Posts: 196
Loc: USA
Thanks for posting your results. Did you experience any idle RPM increase? Did you perform the Ford PCM throttle relearn procedure?
_________________________
2008 P71 EX-National Park Service, throttle comb delete, Jmod, passenger airbag switch, splash guards, police trunk pack, Gamber Johnson floor plate, Havis console, and Tuffy cup holders.
1987 Buick Regal Limited with SBC V8 swap, TES headers, electronic Qjet, ZZ4 chip, THM200-4R 4 speed trans, 3.73 ratio posi rear end, and KYB shocks.
2002 Ford Ranger 4x4 4L
1946 Farmall Model A tractor with 12v alternator upgrade and electronic ignition.

Top
#4045656 - 01/31/20 06:19 PM Re: Removing comb from DBW TB gasket [Re: CommanderCody]
2010mgm2010 Offline
Rookie

Registered: 08/30/17
Posts: 56
Loc: ss
Originally Posted By CommanderCody
Thanks for posting your results. Did you experience any idle RPM increase? Did you perform the Ford PCM throttle relearn procedure?

your are welcome
no rpm still the same
*Did you perform the Ford PCM throttle relearn procedure*
no
just remove the battery terminal and do what you want to do
with the throttle body and plug battery terminal back on

some cars need throttle relearn
but our cars panther platform
no its not
i have removed a lot of throttle body's of these cars
no single one needed throttle body relearn
_________________________
2010 Grand Marquis Bolt ons
Obx headers with 2.5" Exhaust
75MM TB form 5.4 3v
custom intake 6" kn with 80mm maf housing to cpvi zip tube
Trickflow plenum
3.55 LCD gears

Top
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