tp 65 vs 70 vs 75

unblock · November 1st, 2009, 10:17 PM

I'm planning to get a new TP i see most ppl heer running 70 and 75
my modsd are magnapacks with o/r h , UDPs, CAI, 373, shift kit(auto) , egr delete ,sct with bren speed email tune
btw what is the stock TP size for 99gt ? will i be able to change teh TP with out the plenum

Scott2001GT · November 1st, 2009, 10:18 PM

t/b? throttle body?

unblock · November 1st, 2009, 10:18 PM

yep

Scott2001GT · November 1st, 2009, 10:20 PM

ok. people say 70mm N/A and 75+mm FI....imo 70 is good but 75 with bolt ons is nice too.

unblock · November 1st, 2009, 10:21 PM

what is the stock size?

carnut59 · November 1st, 2009, 10:46 PM

60mm i think.

ForestGRN_Ghost · November 2nd, 2009, 12:35 AM

Originally Posted by unblock

what is the stock size?

...come to think of it ...
i dont know.
i think 57.....but that almost seems to small.

MyCarPwns84 · November 3rd, 2009, 12:49 PM

I thought stock was 65mm?
65mm = 616 cfm
70mm = 726 cfm
75mm = 850 cfm

Boostang · November 3rd, 2009, 01:15 PM

can never go wrong with a 70mm

TorqueO · November 3rd, 2009, 01:25 PM

If you are asking about a Throttle Body T/B then go with a 75mm and dont look back. I believe the stock size for a 99 is 65mm

GTRACER88 · November 3rd, 2009, 02:12 PM

Stock size is 65mm...

YeloPony · November 3rd, 2009, 08:50 PM

Hey everything I'm reading is saying 70mm for N/A and not to touch 75 or 78 unless your boosted? Does anyone know the real issues with running a 78 on a NA motor? is there just less benefit or can it actually degrade or cause a problem? I would think for the bbk combo price it would make sense to get the 78mm then if you boost it later it's ready, and if you don't no harm right?

4.10GT · November 3rd, 2009, 09:11 PM

a aftermarket TB will work on the stock plenum, the TB will give you a couple HP and make the motor respond faster.

YeloPony · November 3rd, 2009, 09:13 PM

Originally Posted by 4.10GT

a aftermarket TB will work on the stock plenum, the TB will give you a couple HP and make the motor respond faster.

thanks I got that.. but I'm reading that 75 and 78 is 'too much' for a NA motor? wondering what the downside/drawbacks would be..

TorqueO · November 3rd, 2009, 11:23 PM

The 75 is not to much at all. I have ran a 75 for a long time and way before all my other mods. Didn't need a tune and ran great. Nothing bad at all.

TorqueO · November 3rd, 2009, 11:33 PM

I just saw the "Throttle Intake" from BBK. I dont like how you wont be able to change the throttle body. Stick with just the 75 t/b imo

November 1st, 2009, 10:17 PM	#1
unblock Regular Join Date: May 2007 Posts: 114 iTrader: 0 reviews	tp 65 vs 70 vs 75 I'm planning to get a new TP i see most ppl heer running 70 and 75 my modsd are magnapacks with o/r h , UDPs, CAI, 373, shift kit(auto) , egr delete ,sct with bren speed email tune btw what is the stock TP size for 99gt ? will i be able to change teh TP with out the plenum

November 1st, 2009, 10:18 PM	#2
Scott2001GT BYAHHHH! 2001 Mustang GT 13.874 Join Date: Mar 2008 Location: Missouri Posts: 14,628 Blog Entries: 1 iTrader: 3 reviews	t/b? throttle body? __________________ Precision Turbo\|TurboSmart\|TeamZ\|Strange\|Hellion\|BBK\|SCT\|Edge Converters\|Fairbanks\|CG Fabrications\|Treadstone FRPP Big Bore Boss 4V swap coming Winter of 2012/2013

November 1st, 2009, 10:20 PM	#4
Scott2001GT BYAHHHH! 2001 Mustang GT 13.874 Join Date: Mar 2008 Location: Missouri Posts: 14,628 Blog Entries: 1 iTrader: 3 reviews	ok. people say 70mm N/A and 75+mm FI....imo 70 is good but 75 with bolt ons is nice too. __________________ Precision Turbo\|TurboSmart\|TeamZ\|Strange\|Hellion\|BBK\|SCT\|Edge Converters\|Fairbanks\|CG Fabrications\|Treadstone FRPP Big Bore Boss 4V swap coming Winter of 2012/2013

November 3rd, 2009, 02:12 PM	#11
GTRACER88 Hardcore Enthusiast Join Date: May 2008 Location: Houston, TX Posts: 2,153 iTrader: 1 reviews	Stock size is 65mm... __________________ Super Slow 2011 Grabber blue V6...

November 3rd, 2009, 09:11 PM	#13
4.10GT Regular 1999 Mustang gt 13.5@102MPH Join Date: Feb 2009 Location: Alabama Posts: 319 iTrader: 0 reviews	a aftermarket TB will work on the stock plenum, the TB will give you a couple HP and make the motor respond faster. __________________ 2003 True blue Mustang GT steeda triax , h&r springs , bbk intake , c&l plenum ,frpp tb ,SCT tuned , 4.10's or x-pipe,mac CB , max motorsports sfc, 125 shot ,315 drag radials nt05r's 13.4@104 n/a RIP:1999 Mustang GT Auto 13.5 @102

November 1st, 2009, 10:21 PM	#5
unblock Regular Join Date: May 2007 Posts: 114 iTrader: 0 reviews	what is the stock size?

November 1st, 2009, 10:46 PM	#6
carnut59 Enthusiast 2001 gt Join Date: Sep 2007 Location: dallas, tx Posts: 772 iTrader: 0 reviews	60mm i think.

November 3rd, 2009, 12:49 PM	#8
MyCarPwns84 Regular 2002 Mustang GT Join Date: Nov 2009 Location: SC Posts: 140 iTrader: 0 reviews	I thought stock was 65mm? 65mm = 616 cfm 70mm = 726 cfm 75mm = 850 cfm

November 3rd, 2009, 01:15 PM	#9
Boostang Hardcore Enthusiast 1997 Mustang GT 11.01@128.32 Join Date: Jan 2009 Location: Seale, Alabama Posts: 1,748 iTrader: 0 reviews	can never go wrong with a 70mm

November 3rd, 2009, 01:25 PM	#10
TorqueO Regular Join Date: Sep 2007 Location: Stratford, CT Posts: 235 iTrader: 0 reviews	If you are asking about a Throttle Body T/B then go with a 75mm and dont look back. I believe the stock size for a 99 is 65mm

November 3rd, 2009, 08:50 PM	#12
YeloPony Cones = Yummy! YELLOW! 2001 GT VERT 46.496 Join Date: Nov 2009 Location: Central PA Posts: 2,154 iTrader: 2 reviews	Hey everything I'm reading is saying 70mm for N/A and not to touch 75 or 78 unless your boosted? Does anyone know the real issues with running a 78 on a NA motor? is there just less benefit or can it actually degrade or cause a problem? I would think for the bbk combo price it would make sense to get the 78mm then if you boost it later it's ready, and if you don't no harm right?

November 3rd, 2009, 11:23 PM	#15
TorqueO Regular Join Date: Sep 2007 Location: Stratford, CT Posts: 235 iTrader: 0 reviews	The 75 is not to much at all. I have ran a 75 for a long time and way before all my other mods. Didn't need a tune and ran great. Nothing bad at all. Last edited by TorqueO; November 3rd, 2009 at 11:26 PM.

November 3rd, 2009, 11:33 PM	#16
TorqueO Regular Join Date: Sep 2007 Location: Stratford, CT Posts: 235 iTrader: 0 reviews	I just saw the "Throttle Intake" from BBK. I dont like how you wont be able to change the throttle body. Stick with just the 75 t/b imo

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