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JGS Wastegate... Need More Boost!!

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Old 10-21-2011 | 04:45 PM
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ok i got 2- 1/8" shims in it now, i was running 11-12 lbs of boost before shims gonna go out to the track in about an hour.... Whats yalls guesses??? 15#?
Old 10-21-2011 | 05:43 PM
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I'd guess 14-15 lbs, every setup responds differently due to difference in back pressure etc.. Let us know how she runs!
Old 10-22-2011 | 12:56 AM
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got to 12#'s of boost and kept blowing off one intercooler pipe in particular, ill weld some beads around them this week and get back out to the track..... Never logged nothing more than 12#'s so far but it felt strong....It was a rough night though, some how kept blowing fuses for the hot wire that powers my gauges so that might be another issue in itself... Currently my pipes have no beads at all, just paint and they have never blown off before so i can only assume i was getting more than 12#'s.. Will have to go at it next weekend got tired tonight and said the hell with it, put it on the trailer and come home after 3 Failed passes on a GREAT freaking night about 60 Degrees.... Not to mention i was spinning off the line everytime. Ill have to get someone to help me dial in the suspension on the next trip... So untill next time, im going to bed!
Old 10-22-2011 | 03:01 AM
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You guys need more boost and I keep over boosting what I'm I doing wrong I have the 7 pound spring in and it keeps going to 15 psi I need help I can't figure this out stock 6.0 with a z06 cam mp 76 non innercooled setup
Old 10-22-2011 | 08:23 AM
  #25  
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You probably have your boost reference to the wrong port on the wg
Old 10-22-2011 | 09:08 AM
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My boost reference is on the bottom port on the wast gate
Old 10-22-2011 | 09:47 AM
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Where is your waste gate mounted? If it was referenced to the bottom port (Port Towards Vband Clamps) it would force the waste gate to open, which sounds correct on the 7psi.... I had boost spikes to 20 psi because my waste gate was routed in the cross over about a foot back
Old 10-22-2011 | 10:39 AM
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Where is your gate mounted now? Isnt it still in the crossover?
Old 10-22-2011 | 11:58 AM
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Mine is mounted in the cross over right before it starts to go up to the passenger side log
Old 10-22-2011 | 06:54 PM
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Originally Posted by 02'Z71ONDUBZ'
I dont think you can gain that much boost from a mbc over the actual spring rate. I believe the limit you can add over the spring is around 4-5psi. I may be wrong however, havent had a chance to hook mine up and play with it yet. How many psi were you able to get over your spring how you have it set now?
Also, I cant understand how you routed your boost reference line to the top port on your wastegate and didnt overboost?
I have a tial 50mm with a 7lb spring. I run a hallman controller and seen 13psi with more left.


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