how do i stop boost spike?
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TR Balla Donor Supreme
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how do i stop boost spike?
my boost is set at 14psi but it will only boost to like 12psi sometimes but if it only goes to 12psi i can let off and then get on it again and it will go to 14psi, i was told this is boost spike, how could i prevent this?
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formerly 'RiceRocket'
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Re: how do i stop boost spike?
Originally posted by philly blunt
my boost is set at 14psi but it will only boost to like 12psi sometimes but if it only goes to 12psi i can let off and then get on it again and it will go to 14psi, i was told this is boost spike, how could i prevent this?
my boost is set at 14psi but it will only boost to like 12psi sometimes but if it only goes to 12psi i can let off and then get on it again and it will go to 14psi, i was told this is boost spike, how could i prevent this?
Charles
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1953 Cadillac Coupe De Ville (Fuel Injected, Drive-by-wire, DoD)
2009 Pontiac G8 GT (6.0l V8 Sleeper)
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1953 Cadillac Coupe De Ville (Fuel Injected, Drive-by-wire, DoD)
2009 Pontiac G8 GT (6.0l V8 Sleeper)
2011 Toyota Sequoia Sport 4x4 (Tow Rig)
My Blog: www.HotRodCaddy.com
could be worse
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waste gate prolly.... and i think a bost spike is when you hit liek 18 then drop to 14...the spike would be 18... i think! dont hold me to that
Thread Starter
TR Balla Donor Supreme
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ya sometimes ill hit 15psi and it will drop to 12psi for no reason so i think its the wastegate, is there any cheap fix for this? or do i need a whole new actuater, by the way its on a tdo5 14b turbo
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could be worse
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im not that sure to be honest... im not a huge turbo junkie, im sure keith or sombody with better info will chime in....
Get the fuck off my lawn
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i'd get a new (or if available an upgraded) actuator assembly. it could be that yours is old and not opening fully.
if you have time pull the turbo and look at the flapper valve on the turbine housing. there could be crud or carbon buildup/soot on it keeping it from opening fast all the time. hit it with some wd-40 or penetrating lube. it might have to be replaced.
check your vacuum connections and make sure that everything is leakproof.
i dont remember but the stock boost on a 1g dsm is like 9 or 10psi..or was it 12psi? either way, an upgraded actuator might hold higher boosts more. in the nissan world, the stock sr20det actuators dont hold boost too well over 12psi sometimes, esp running 1 bar (~14psi).
if you have time pull the turbo and look at the flapper valve on the turbine housing. there could be crud or carbon buildup/soot on it keeping it from opening fast all the time. hit it with some wd-40 or penetrating lube. it might have to be replaced.
check your vacuum connections and make sure that everything is leakproof.
i dont remember but the stock boost on a 1g dsm is like 9 or 10psi..or was it 12psi? either way, an upgraded actuator might hold higher boosts more. in the nissan world, the stock sr20det actuators dont hold boost too well over 12psi sometimes, esp running 1 bar (~14psi).
Jewbling
Joined: Apr 2004
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i would check your boost controller...when i put mine in a while ago i starting spiking 1-2 psi...Now boost creep is associated with the wastegate flapper being pushed open more then it should be..hence the creepage in pressure
check all your vac lines for cracks,holes,kinks and make sure there as short as they can possibly be
do a search on boost spike...youll see that most people replies will be somthing related to the boost controller
just my 2 cents
check all your vac lines for cracks,holes,kinks and make sure there as short as they can possibly be
do a search on boost spike...youll see that most people replies will be somthing related to the boost controller
just my 2 cents
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Good morning Hebrews and Shebrews ...wut a glorious jewish day...lots of coupons in the sunday paper eh, lots of good deals there...so i went into the store to buy a T.V. and they wanted $800 bucks for it so i "ussed" them down to $500
~Peter Griffin
Last edited by 97TSI; Jul 8, 2004 at 09:09 PM.
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