Forced Induction Turbos/Superchargers

not building boost with 2 step

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Old Jul 28, 2011 | 10:00 AM
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startingline05's Avatar
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From: Hinesville ga
not building boost with 2 step

just as the title says. i have done a boost leak test and it is holding boost fine. also the car will break boost fine. any idea why i am not building boost while i 2-step before i launch?
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Old Jul 29, 2011 | 11:52 AM
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Is this tuned or factory?
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Old Jul 29, 2011 | 12:23 PM
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From: Houston
Originally Posted by startingline05
just as the title says. i have done a boost leak test and it is holding boost fine. also the car will break boost fine. any idea why i am not building boost while i 2-step before i launch?
you have the WOT box cause i beleive you are a turbo swapped lsj...mine does the same thing, it wont build boost on my turbo swap. but when i was supercharged it was build 10lbs of boost at like 3600rpms...so i dont know why it doesnt work with the turbo.
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Old Jul 29, 2011 | 12:47 PM
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From: Altus AFB, Ok
Originally Posted by slvr 04 rl
you have the WOT box cause i beleive you are a turbo swapped lsj...mine does the same thing, it wont build boost on my turbo swap. but when i was supercharged it was build 10lbs of boost at like 3600rpms...so i dont know why it doesnt work with the turbo.
you would build boost reving the supercharger?
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Old Jul 29, 2011 | 10:16 PM
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From: Houston
Originally Posted by 06cobalt racer
you would build boost reving the supercharger?
yes it built boost.
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Old Jul 29, 2011 | 10:25 PM
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Why would you want to launch a FWD car under boost? Unless on slicks at the track...
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Old Jul 29, 2011 | 10:27 PM
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From: Parma, OH
Originally Posted by slvr 04 rl
yes it built boost.
but why?
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Old Jul 29, 2011 | 11:34 PM
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From: Houston
Originally Posted by AndrewSS/TC
Why would you want to launch a FWD car under boost? Unless on slicks at the track...
you just answered your own question......
Originally Posted by BPacak
but why?
im not saying i use it. im not even supercharged anymore. i just have the WOT box. so why not make sure everything is working and try it out. but it will build boost lol. i will say i have used it and knew it would be useless, but it was funny. i only use it for the no lift shift anyways
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Old Jul 30, 2011 | 12:32 AM
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startingline05's Avatar
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From: Hinesville ga
Originally Posted by AndrewSS/TC
Why would you want to launch a FWD car under boost? Unless on slicks at the track...
thats why. not slicks but MT drag radials. plus im also just use to most boosted cars building boost when they 2 step and was just wondering if its in the tune or what.
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Old Jul 30, 2011 | 02:11 PM
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I believe you need to tune for better results with building boost on the 2 step. If you retard the timing it will create much higher egt's but it will help spool the turbo creating some boost at the line.
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Old Aug 2, 2011 | 08:41 AM
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Your turbo needs to have a load on it to build boost, ( I say load to make it easy, lol) Just free rev exhaust gas will not spin the turbine fast enough. How many rpm are you 2-stepping the car at. If you raise wot box up high enough you will see some boost but not very much. If you make the correct changes to your high oct timing chart you can use the wot box to stabilize your rpm and stay in the correct cyl. airmass cells and you will build as much boost as you want. You will need to do some logs to figure out where your cyl. airmass is at while you are on the 2-step. You should learn how anti-lag works before you start getting carried away!!

When my car was a 5 spd. I could could control my boost on anti-lag from 5-30psi pretty easily.
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Old Aug 3, 2011 | 11:34 AM
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2Step involves both retarding timing and adding fuel skyrocketing EGTs. This spools your turbo, but can also damage manifolds, valves and plenty of other things...
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