hallman manual boost controllers

gnailuh · 03-29-2004, 10:29 PM

hi,

i'm getting one of these, but they have many models:

ES - basic model for about $50.
PRO - better looking (better features?) for $100
PRO RX - same as PRO but with 2 springs and ceramic ball $115

i don't care about the ones with in-cabinet control.

mainly, which of the 3 above have you used and would recommend? should i bother shelling out the extra $50 or so? they are really all the same general design, what makes one model better? and how is it better? finer adjustment? i really want faster spooling... does it make any difference?

like to hear what you think. thanks!

leet · 03-29-2004, 11:37 PM

I use the basic Hallman controller on my car. It's ROCK SOLID. Unless you want to be able to swap between two boost settings easily (not always a bad thing, just more expensive), just get the basic one.

JiveMasterT · 03-29-2004, 11:40 PM

you're not going to get faster spooling with a boost controller. you might get faster spooling with a newer intake, and a wide open exhaust, but thats about it. heh, if you dont like your spool rate now, wait until you upgrade.

98RedGs · 03-30-2004, 01:00 AM

Quote:

Originally posted by JiveMasterT
you're not going to get faster spooling with a boost controller. you might get faster spooling with a newer intake, and a wide open exhaust, but thats about it. heh, if you dont like your spool rate now, wait until you upgrade.

Soooo true.

But personally I would go with just his regular $50 dollar one and use it. I got it and it works fine for me. No problems yet. No need to shell out the rest of that 50 bucks cause that would buy you a boost gauge!
woot!

Megaman · 03-30-2004, 01:30 AM

i have the pro..im bling like that

Defiant · 03-30-2004, 04:54 AM

I finally got around to putting a boost gauge on the '95. I've pulled the BCS restrictor, gone to a cone filter and a Formosan-ripoff Injen intake pipe. My shock to find I'm bumping 16PSI boost, and pulling 21"hg vac at idle.

So much for adding an MBC at this point.

jmc94gsx · 03-30-2004, 06:38 AM

Quote:

Originally posted by 98RedGs
Soooo true.

Not very correct, part of the trick is the bleeder hole that most don't know what the heck does and overlooks. A properly designed boost controller has these, that's why you should always purchase one that has one. Spool up time would be adversely affected if a controller didn't have it. So that's why go with a proven part, not something off of Ebay.

JiveMasterT · 03-30-2004, 09:09 AM

Quote:

Originally posted by jmc94gsx
Not very correct, part of the trick is the bleeder hole that most don't know what the heck does and overlooks. A properly designed boost controller has these, that's why you should always purchase one that has one. Spool up time would be adversely affected if a controller didn't have it. So that's why go with a proven part, not something off of Ebay.

i thought he wanted to make his spool up time faster than it is stock... a bc wont do that.

jmc94gsx · 03-30-2004, 09:26 AM

True, but the point needs to be taken that it does have a real impact.

Specifically spool time between shifts will be affected if it is not a proper design.

JiveMasterT · 03-30-2004, 09:28 AM

i myself am getting the dejon tool 2 stage mbc... its cheap, its cool, and i want it. plus dejon tool is hella tight yo.

gnailuh · 03-30-2004, 09:34 AM

for some reason i thought mbc helps with quicker spool... so that's not true? and are you guys implying that it makes spooling even slower?

let's say for example that stock boost is 11psi and the wastegate leaks a little, so it starts to leak at say 9psi... and you set the mbc for 14psi, the thing should not allow pressure to flow to the wastegate until 14psi right? so logically, the entire 14psi shouold be used for spooling up the turbo... that what i heard and how i reasoned it. can someone explain why that's wrong?

also, does a ridgid intake really help a lot?

Defiant, 16psi at stock? i have same mods, minus intake pipe and i see 12.5psi and 20 vac... you really have 16psi? that's sounds a bit wild on the high sidee....

thannks.

GSntncT · 03-30-2004, 09:58 AM

Quote:

Originally posted by gnailuh
hi,

i'm getting one of these, but they have many models:

ES - basic model for about $50.
PRO - better looking (better features?) for $100
PRO RX - same as PRO but with 2 springs and ceramic ball $115

i don't care about the ones with in-cabinet control.

mainly, which of the 3 above have you used and would recommend? should i bother shelling out the extra $50 or so? they are really all the same general design, what makes one model better? and how is it better? finer adjustment? i really want faster spooling... does it make any difference?

like to hear what you think. thanks!

Or better yet, get dejons' med-hi mbc, especially if you ever plan on going to the track........in any event, you want faster spool- two words-PORT CITY. Your turbine housing, exhaust manifold, 02 housing, the list goes on.

JiveMasterT · 03-30-2004, 02:25 PM

Quote:

Originally posted by gnailuh
for some reason i thought mbc helps with quicker spool... so that's not true? and are you guys implying that it makes spooling even slower?

let's say for example that stock boost is 11psi and the wastegate leaks a little, so it starts to leak at say 9psi... and you set the mbc for 14psi, the thing should not allow pressure to flow to the wastegate until 14psi right? so logically, the entire 14psi shouold be used for spooling up the turbo... that what i heard and how i reasoned it. can someone explain why that's wrong?

also, does a ridgid intake really help a lot?

Defiant, 16psi at stock? i have same mods, minus intake pipe and i see 12.5psi and 20 vac... you really have 16psi? that's sounds a bit wild on the high sidee....

thannks.

we are not implying that it makes it spool slower, we are saying that it wont make it spool any faster. the boost controller is only adjusting when your wastegate opens, and there is a possibility for the spool time to slow down due to a poor mbc design, but it wont make it any faster.

i know a guy who runs 11s on the stock intake pipe.

i am running 15-16 psi at full boost with my turbo back exhaust, intake, bov, etc. i also idle at about 15-16 vac, but i think my gauge isnt reading my vac properly so when i get that tuned i will let you know. also when i let off the gas while rolling it drops to about 22-23 vac, just thought id mention that while i am at it.

gnailuh · 03-30-2004, 02:40 PM

ok, won't make it spool faster. but let me ask another question, will it make the boost curve "fatter"? lets say boost comes on at 3k rpm and goes up linearly to 12psi at 5.5k rpm. with a mbc, will the boost get to 12psi faster? ... or is that asking the same question? just wondering...

just pickedup a new hallman ES mbc for $50... so gonna test it out this weekend hopefully. i'm reading 12.5psi max right now, with the mbc, what's a safe level for me to go to? i only have an air filter mod.

Defiant · 03-30-2004, 09:38 PM

Quote:

Originally posted by gnailuh
ok, won't make it spool faster. but let me ask another question, will it make the boost curve "fatter"? lets say boost comes on at 3k rpm and goes up linearly to 12psi at 5.5k rpm. with a mbc, will the boost get to 12psi faster?

All an MBC does is control how and at what boost level the wastegate opens.

It has no effect on spoolup.

It can make wastegate stay closed into higher pressures, so that the turbo puts out more boost. Improperly adjusted and monitored, it can also make a motor grenade itself before you finish this sentence.

Oh, and just build your own. It ain't rocket surgery.

http://www.geocities.com/chmwatson/FAQs/mbc.html

http://members.tripod.com/Busta-bc/busta.htm

http://www.dawesdevices.com/boost.html