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What peak boost number

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Old Sep 2, 2009 | 08:35 PM
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Default What peak boost number
How high of a boost number should i be seeing when on a tvs 1900? When i get on the gas it shoots to 13 then back down to 2 to 3 at 25 to 30 mph.
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Old Sep 2, 2009 | 08:42 PM
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How much do you know about Forced Induction?

How much boost you make not only depends on your mods but also the size of they pulley.
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Old Sep 2, 2009 | 08:52 PM
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I'm all stock, i know that it will not stay in boost at cruising speeds if anything i will likely see little. i was just wondering how high of a peak would i expect at wot, again im all stock, for now anyway.
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Old Sep 2, 2009 | 09:16 PM
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a stock 6L with stock TVS R1900 will make peak ~6lbs. As you let off the throttle you will go "out of boost" completely.
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Old Sep 2, 2009 | 09:21 PM
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do you have an electric boost gauge? I've got full exhaust with no cats, but the supplied 3.4" pulley gave me 4.5lbs, a 3.1" gave me 6lbs and the 3.0" has me at 7lbs and it never surges like you described.
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Old Sep 2, 2009 | 09:25 PM
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Originally Posted by bleedchevy
How high of a boost number should i be seeing when on a tvs 1900? When i get on the gas it shoots to 13 then back down to 2 to 3 at 25 to 30 mph.
Whew????
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Old Sep 3, 2009 | 10:12 PM
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Definitely something going on since your boost should not be surging like that. I'd check the boost gauge/vacuum lines.
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Old Sep 4, 2009 | 08:41 PM
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well what im trying to get at is how much boost should i expect or should be seeing at wot, i thought it was limited to 6lbs, but i have been hitting higher numbers, i looked for leaks didnt find any.
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Old Sep 4, 2009 | 08:59 PM
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Do you have a tuning program? If you could post a scan of what you are talking about, that would be very helpful.
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Old Sep 4, 2009 | 09:31 PM
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My TVS1900 has the 3.0" pulley and consistently boosts 7psi at WOT. If you have the standard kit pulley then I don't think you should ever be seeing anything over 6psi.
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