PASS Racing Velocity Stacks--Worth It?

FelipeT · 09-24-2009, 12:00 PM

Just what the subject says. Who here has those velocity stack intakes? Has anybody dyno tested them? Do they make a difference? Are they worth it?

By the way, yes, I am referring to the Black Top 20V.

I'm just wondering if they do anything other than look really cool.

chrisclose · 10-03-2009, 09:29 PM

ive got them and wish i had the stock airbox, they would be great on a track only car, but daily is another story. although they never fail to impress and sound great!

FelipeT · 10-04-2009, 02:01 AM

What is it about them that makes them a bad choice for a daily driver? Is it the noise? Or is it a driveability issue? Do you have black top or a silver top?

The only reason that I'm really considering them is that the stock airbox was damaged on my motor, as it came from the supplier.

Oh, and yes, mine will be a street car, not a track car. However, it won't be my only car, so there is a certain amount of "rowdiness" that I might be more willing to live with than most.

Thanks!

espguitarist33 · 10-04-2009, 02:33 AM

dontforget..the sound will be right behind your head. I've seen that they are not big gains for power...and alot of people in fwd cars don't like the volume..that would be worse in a rwd..my 2 cents

Raptor13x · 10-04-2009, 04:45 AM

Supposedly the airbox is actually better for power than velocity stacks, provided the airbox is well-designed. I've never seen hard evidence to back that up though. The main issue with velocity stacks is you still need air filters- and 4 of them now, which do a great job of removing any gains you may have had. That is, unless you're crazy and don't care about the survival of your engine, so you run without filters.

poopeeroo · 10-04-2009, 07:12 AM

velo stacks only sound better than stock box. but reliability and performance?? id go with stock box.

also velo stacks f**ks up your engine

baktasht · 10-04-2009, 07:16 AM

Quote:

Originally Posted by poopeeroo

also velo stacks f**ks up your engine

I am assuming you are joking

poopeeroo · 10-04-2009, 07:22 AM

Quote:

Originally Posted by baktasht

I am assuming you are joking

no really its true. open ITB sucks in so much dirt even if you put those individual filters on.

what i meant was in the long run. running open ITB for a long time will mess up your engine. not necessarily right away.

baktasht · 10-04-2009, 07:27 AM

Quote:

Originally Posted by poopeeroo

no really its true. open ITB sucks in so much dirt even if you put those individual filters on.

what i meant was in the long run. running open ITB for a long time will mess up your engine. not necessarily right away.

Leaving any intake open without filtration is bad for the engine. Whether its an ITB setup, turbo, standard single throttle body, or whatever. There's no reason to leave them open when you can easily set them up with filters: Performance Autosports Service and Supplies: PASS Racing Velocity Stack with Filter Kit for AE111

poopeeroo · 10-04-2009, 07:30 AM

Quote:

Originally Posted by baktasht

Leaving any intake open without filtration is bad for the engine. Whether its an ITB setup, turbo, standard single throttle body, or whatever. There's no reason to leave them open when you can easily set them up with filters: Performance Autosports Service and Supplies: PASS Racing Velocity Stack with Filter Kit for AE111

yup there you go! that would work. i was thinking about the open velo stacks that honda boys usually use. the ones one without filtration.

what are they thinking anyway??

chrisclose · 10-04-2009, 06:14 PM

they dont add power, the length of the stack moves the power band up and down the rpm range (from what ive read, im no engineer) the pass stacks are either too short or long, cant remember which way it goes, thus bringing the power band up really high, effectively killing driving at low rpms

do some research and get the right length for the style of driving you enjoy

jimmer411 · 10-04-2009, 11:24 PM

Quote:

Originally Posted by chrisclose

they dont add power, the length of the stack moves the power band up and down the rpm range (from what ive read, im no engineer) the pass stacks are either too short or long, cant remember which way it goes, thus bringing the power band up really high, effectively killing driving at low rpms

do some research and get the right length for the style of driving you enjoy

I would say that velocity stacks to add power, quite a bit. First 3 dynos should explain it well enough. Stock are actually pretty good as well. You cant really compare anything on the butt dyno tho.
The DEFINITIVE Built 16v vs STOCK 20v Thread... - Hachiroku.net | Forums

chrisclose · 10-04-2009, 11:55 PM

great information!! makes me want to build a 16v!

maybe im just stupid, but i failed to see a graph where stock stacks were ran against any kind of aftermarket stacks? Is there one in there?

jimmer411 · 10-05-2009, 12:43 AM

No it doesnt show aftermarket stacks, but it talks about them. I had 2 dyno sessions at that same shop comparing various builds, from what I seen in graphs and discussed the T3 arent a large upgrade over stock, they do sound much different tho.

I did gather enough info to know that the 20v ST is a waste of time compared to the BT...lol

I am interested in seeing the differences between stock airbox and open stacks, Ive heard a few claims that there is more bottom end with the stock airbox, but who knows. I wont be doing my swap for a couple months at the very least, but I do intend to do a back to back dyno comparison between stacks and the airbox/cone filter setup many people run.

The 16v is pretty fun to play with, it can be built up to or past ST power levels pretty easily as well if you like hunting down parts

espguitarist33 · 10-05-2009, 12:48 AM

ST is better if your interested in forged pistons and a turbo...ST on blacktop ecu with high comp pistons is supposed to be the best of the two for the hardened rods and such

jimmer411 · 10-05-2009, 01:01 AM

BT has a superior head design, more aggressive cam among other things. Ive seen quite a few 20v ST making 120whp, but never seen one higher than 135whp where I have seen quite a few BT dynos making 144-155whp.

Rod size wont matter for boost as long as you control detonation and arent trying to make 300whp+

espguitarist33 · 10-05-2009, 01:15 AM

hm...its one of those big debates...even between forums theres HUGE differences in general opinions...i like my silvertop and you like your blacktop

besides the cheapness...i want to run a yittle turbo on it..and i read around its easier to turbo AFM cars.....i saw a thread asked about BT cams on a ST head....any definitive answer on that?

regarldess thats a thread jack
and heres another

I'm going to work on my own intake system for the ITBs ...i'm not posting details on it yet because I wanna see if I can do it...could be a very great market item as it can be made to fit on any car made!

FelipeT · 10-05-2009, 07:40 AM

Thanks for all of the replies. I guess that the next question should be, if one wanted longer velocity stacks than the PASS racing units, where would one find those?

I only brought up the PASS racing ones because they are the easiest to find. I only brought up the velocity stacks at all because my BT came with a badly damaged stock air box, so I'm either going to have to find a replacement, or get the stacks.

chrisclose · 10-05-2009, 10:02 AM

here are some short 105mm ones
Ram Tube - Toyota 4AGE 20V AE111 Blacktop, 50mm, set of 4

here are some 75mm ones
Techno Toy Tuning - 4AGE 20v Velocity Stacks [ T3-4AGE-VS ] - Enjuku Racing - Performance Parts and High Quality Fabrication

I dont know if this guy is legit or not, but.....
Got velocity stacks? - Tweak3D.Net

there are plenty of others too, cant seem to find the links right now. I know there is an Australian company that makes about all the stacks one could ever want, but i cant find the site,

chrisclose · 10-05-2009, 10:05 AM

Home - Velocity Stacks/Aluminium

here you go!

09-24-2009, 12:00 PM	#1 (permalink)
FelipeT No Skills Join Date: Feb 2009 Posts: 16 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	PASS Racing Velocity Stacks--Worth It? Just what the subject says. Who here has those velocity stack intakes? Has anybody dyno tested them? Do they make a difference? Are they worth it? By the way, yes, I am referring to the Black Top 20V. I'm just wondering if they do anything other than look really cool.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

10-03-2009, 09:29 PM	#2 (permalink)
chrisclose Cage Fighter Join Date: Dec 2006 Location: tulsa OK Posts: 125 Thanks: 3 Thanked 1 Time in 1 Post iTrader Rating: (2/100% )	ive got them and wish i had the stock airbox, they would be great on a track only car, but daily is another story. although they never fail to impress and sound great!

10-04-2009, 02:01 AM	#3 (permalink)
FelipeT No Skills Join Date: Feb 2009 Posts: 16 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	What is it about them that makes them a bad choice for a daily driver? Is it the noise? Or is it a driveability issue? Do you have black top or a silver top? The only reason that I'm really considering them is that the stock airbox was damaged on my motor, as it came from the supplier. Oh, and yes, mine will be a street car, not a track car. However, it won't be my only car, so there is a certain amount of "rowdiness" that I might be more willing to live with than most. Thanks!

10-04-2009, 02:33 AM	#4 (permalink)
espguitarist33 Cage Fighter Join Date: Nov 2008 Location: west chester PA Posts: 415 Thanks: 4 Thanked 5 Times in 5 Posts iTrader Rating: (2/100% )	dontforget..the sound will be right behind your head. I've seen that they are not big gains for power...and alot of people in fwd cars don't like the volume..that would be worse in a rwd..my 2 cents

10-04-2009, 04:45 AM	#5 (permalink)
Raptor13x Legendary Join Date: Apr 2006 Location: Farmington Hills, MI Posts: 3,989 Thanks: 7 Thanked 40 Times in 34 Posts My Google Map iTrader Rating: (5/100% )	Supposedly the airbox is actually better for power than velocity stacks, provided the airbox is well-designed. I've never seen hard evidence to back that up though. The main issue with velocity stacks is you still need air filters- and 4 of them now, which do a great job of removing any gains you may have had. That is, unless you're crazy and don't care about the survival of your engine, so you run without filters.

10-04-2009, 07:12 AM	#6 (permalink)
poopeeroo Cage Fighter Join Date: Nov 2008 Posts: 268 Thanks: 2 Thanked 3 Times in 3 Posts iTrader Rating: (1/100% )	velo stacks only sound better than stock box. but reliability and performance?? id go with stock box. also velo stacks f**ks up your engine

10-04-2009, 06:14 PM	#11 (permalink)
chrisclose Cage Fighter Join Date: Dec 2006 Location: tulsa OK Posts: 125 Thanks: 3 Thanked 1 Time in 1 Post iTrader Rating: (2/100% )	they dont add power, the length of the stack moves the power band up and down the rpm range (from what ive read, im no engineer) the pass stacks are either too short or long, cant remember which way it goes, thus bringing the power band up really high, effectively killing driving at low rpms do some research and get the right length for the style of driving you enjoy

10-04-2009, 11:55 PM	#13 (permalink)
chrisclose Cage Fighter Join Date: Dec 2006 Location: tulsa OK Posts: 125 Thanks: 3 Thanked 1 Time in 1 Post iTrader Rating: (2/100% )	great information!! makes me want to build a 16v! maybe im just stupid, but i failed to see a graph where stock stacks were ran against any kind of aftermarket stacks? Is there one in there?

10-05-2009, 12:43 AM	#14 (permalink)
jimmer411 NA > Boost Join Date: Mar 2008 Location: Enumclaw, WA Posts: 70 Thanks: 1 Thanked 1 Time in 1 Post My Google Map iTrader Rating: (0/0% )	No it doesnt show aftermarket stacks, but it talks about them. I had 2 dyno sessions at that same shop comparing various builds, from what I seen in graphs and discussed the T3 arent a large upgrade over stock, they do sound much different tho. I did gather enough info to know that the 20v ST is a waste of time compared to the BT...lol I am interested in seeing the differences between stock airbox and open stacks, Ive heard a few claims that there is more bottom end with the stock airbox, but who knows. I wont be doing my swap for a couple months at the very least, but I do intend to do a back to back dyno comparison between stacks and the airbox/cone filter setup many people run. The 16v is pretty fun to play with, it can be built up to or past ST power levels pretty easily as well if you like hunting down parts

10-05-2009, 12:48 AM	#15 (permalink)
espguitarist33 Cage Fighter Join Date: Nov 2008 Location: west chester PA Posts: 415 Thanks: 4 Thanked 5 Times in 5 Posts iTrader Rating: (2/100% )	ST is better if your interested in forged pistons and a turbo...ST on blacktop ecu with high comp pistons is supposed to be the best of the two for the hardened rods and such

10-05-2009, 01:01 AM	#16 (permalink)
jimmer411 NA > Boost Join Date: Mar 2008 Location: Enumclaw, WA Posts: 70 Thanks: 1 Thanked 1 Time in 1 Post My Google Map iTrader Rating: (0/0% )	BT has a superior head design, more aggressive cam among other things. Ive seen quite a few 20v ST making 120whp, but never seen one higher than 135whp where I have seen quite a few BT dynos making 144-155whp. Rod size wont matter for boost as long as you control detonation and arent trying to make 300whp+

10-05-2009, 01:15 AM	#17 (permalink)
espguitarist33 Cage Fighter Join Date: Nov 2008 Location: west chester PA Posts: 415 Thanks: 4 Thanked 5 Times in 5 Posts iTrader Rating: (2/100% )	hm...its one of those big debates...even between forums theres HUGE differences in general opinions...i like my silvertop and you like your blacktop besides the cheapness...i want to run a yittle turbo on it..and i read around its easier to turbo AFM cars.....i saw a thread asked about BT cams on a ST head....any definitive answer on that? regarldess thats a thread jack and heres another I'm going to work on my own intake system for the ITBs ...i'm not posting details on it yet because I wanna see if I can do it...could be a very great market item as it can be made to fit on any car made!

10-05-2009, 07:40 AM	#18 (permalink)
FelipeT No Skills Join Date: Feb 2009 Posts: 16 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Thanks for all of the replies. I guess that the next question should be, if one wanted longer velocity stacks than the PASS racing units, where would one find those? I only brought up the PASS racing ones because they are the easiest to find. I only brought up the velocity stacks at all because my BT came with a badly damaged stock air box, so I'm either going to have to find a replacement, or get the stacks.

10-05-2009, 10:02 AM	#19 (permalink)
chrisclose Cage Fighter Join Date: Dec 2006 Location: tulsa OK Posts: 125 Thanks: 3 Thanked 1 Time in 1 Post iTrader Rating: (2/100% )	here are some short 105mm ones Ram Tube - Toyota 4AGE 20V AE111 Blacktop, 50mm, set of 4 here are some 75mm ones Techno Toy Tuning - 4AGE 20v Velocity Stacks [ T3-4AGE-VS ] - Enjuku Racing - Performance Parts and High Quality Fabrication I dont know if this guy is legit or not, but..... Got velocity stacks? - Tweak3D.Net there are plenty of others too, cant seem to find the links right now. I know there is an Australian company that makes about all the stacks one could ever want, but i cant find the site,

10-05-2009, 10:05 AM	#20 (permalink)
chrisclose Cage Fighter Join Date: Dec 2006 Location: tulsa OK Posts: 125 Thanks: 3 Thanked 1 Time in 1 Post iTrader Rating: (2/100% )	Home - Velocity Stacks/Aluminium here you go!