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is there a cheap way to limit boost

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Old Feb 10, 2006 | 06:33 PM
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is there a cheap way to limit boost

hi

my t2 is going bloody great, its got a 3" TID and FCD and a 3" exhaust all the way thru, no cat and splits into 2.5" mufflers, no before i got the 3" pipe put in it was running 8-9psi in 1,2,3rd and 11-12 in 4th and 5th, nowwwww its runnign 10-11 in 1st and 2nd and 14 in 3rd 4th and 5th,

is there anyway i can limit the boost that dosnt invole me pulling the turbo off of spending $500 on a boost controller?

sorry for being a tin bum i just dnt wana reck my eng
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Old Feb 10, 2006 | 06:35 PM
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no



your only alternative is putting the stock airbox and exhaust back on.

boost controllers only raise boost, not lower it.
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Old Feb 10, 2006 | 06:36 PM
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either pull the turbo and port the wg or restrict your intake and/or exhaust. no other way around it. a boost controller will not lower boost beyond what the wg can handle. it can only raise boost.
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Old Feb 10, 2006 | 06:38 PM
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I'm pretty sure your gonna here alot of, "Port the wastegate, it's not that hard or expensive." But I'de be kinda interested in this too if there are any alternatives or if a boost controller does effectivaly control boost. But your gonna want to do something or to your motor.
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Old Feb 10, 2006 | 06:43 PM
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there is no alternatives to lowering boost than the ones mentioned.

well you could stuff a potatoe(grin) in the tailpipe i guess but eventually you would have french fries popping out the exhaust.
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Old Feb 10, 2006 | 08:48 PM
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Stop pressing on the gas so hard...


-Ted
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Old Feb 10, 2006 | 08:51 PM
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use teh pedal on teh right dood!
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Old Feb 10, 2006 | 08:52 PM
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Originally Posted by RETed
Stop pressing on the gas so hard...


-Ted
doh I got scooped!

neway what he said
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Old Feb 10, 2006 | 09:09 PM
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Why would you want to limit boost?
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Old Feb 10, 2006 | 09:16 PM
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Shouldnt you be hitting fuel cut at 8.5lbs?
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Old Feb 10, 2006 | 09:28 PM
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Originally Posted by NZ_87_TURBO
...is there anyway i can limit the boost that dosnt invole me pulling the turbo off of spending $500 on a boost controller?
Only by restricting airflow (intake or exhaust), which will also reduce performance. Porting the wastegate is cheap and will have less impact on performance. For the same boost you'll get more power with a ported wastegate than with restricted intake/exhaust.

And as mentioned a boost controller won't help at all.

Originally Posted by eatmyclutch
Why would you want to limit boost?
You're joking right? I fear for your engine...
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Old Feb 10, 2006 | 09:30 PM
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Originally Posted by eatmyclutch
Why would you want to limit boost?
Not enough fuel, stock ecu, etc. etc.

Originally Posted by BklynRX7
Shouldnt you be hitting fuel cut at 8.5lbs?
he says he has a FCD in the first sentence
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Old Feb 10, 2006 | 09:31 PM
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Originally Posted by ilike2eatricers



he says he has a FCD in the first sentence
Then why the hell si he bitching about too much boost? He asked for it!!!
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Old Feb 10, 2006 | 09:38 PM
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Originally Posted by BklynRX7
Shouldnt you be hitting fuel cut at 8.5lbs?
He said he had an FCD....

Edit: man there are a lot of ppl on tonight....in the time I read the posts someone had already posted!!
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Old Feb 10, 2006 | 09:39 PM
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Originally Posted by BklynRX7
Then why the hell si he bitching about too much boost? He asked for it!!!
uhhh some people feel that hitting fuel cut all the time isnt good thing... then again overboost is not either but you can control overboost with throttle control
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Old Feb 10, 2006 | 09:42 PM
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doesnt fuel cut cause a lean situation by cutting fuel? That can't be good either
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Old Feb 10, 2006 | 09:48 PM
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Originally Posted by unW7WZ
doesnt fuel cut cause a lean situation by cutting fuel? That can't be good either
I alway thought fuel cut caused no fuel, a lean condition would mean a AFR that had too little fuel per part of air like 7:1 or 8:1 not 0:1.
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Old Feb 10, 2006 | 09:55 PM
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Nah, fuel cut only cuts the secondaries, not primaries..
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Old Feb 10, 2006 | 09:56 PM
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Originally Posted by BklynRX7
Then why the hell si he bitching about too much boost? He asked for it!!!
If you want more that 8.6psi you fit a FCD, but 14psi is obviously too much. That really shouldn't need to be explained...

Originally Posted by unW7WZ
doesnt fuel cut cause a lean situation by cutting fuel?
Fuel cut does not cause a lean condition. To have a lean condition you have to have combustion. No fuel = no combustion.
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Old Feb 10, 2006 | 11:14 PM
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Is there any possible bad outcomes when it comes to choking the air supply to the turbo besides loss of horsepower and boost?
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Old Feb 11, 2006 | 12:33 AM
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All you're doing is replacing some of the restriction that was present in stock form, so no. You don't "choke" it, you just restrict it a bit.
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Old Feb 11, 2006 | 12:44 AM
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what about with "aftermarket" turbo applications?
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Old Feb 11, 2006 | 01:17 AM
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Originally Posted by NZConvertible
If you want more that 8.6psi you fit a FCD, but 14psi is obviously too much. That really shouldn't need to be explained...

Fuel cut does not cause a lean condition. To have a lean condition you have to have combustion. No fuel = no combustion.
It didnt need to be explained to me, some things should be explained to the poster. Lets just use the theory of supporting mods for example. "oh I upped the boost and now im scared I may run lean" You should have thought about fuel and the size of your wastegate before you went and did that ****.
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Old Feb 11, 2006 | 01:35 AM
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**** i learned something new i thought a boost controller was used for adjusting the boost down, so what should i do so wont blow my motor

i have these mods: fmic w/ 3in. piping, cold air intake, accel wires, full exhaust from the downpipe out, and stage 3 clutch
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Old Feb 11, 2006 | 05:28 AM
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Originally Posted by El Nene 7
**** i learned something new i thought a boost controller was used for adjusting the boost down, so what should i do so wont blow my motor

i have these mods: fmic w/ 3in. piping, cold air intake, accel wires, full exhaust from the downpipe out, and stage 3 clutch
ditch the accel wires (stock NGKs), get a FCD and if you want get a boost controller to raise to boost to where you want (at a safe level of course according to what fuel mods you have)
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