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#21 | |
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Neo is Jesus
Join Date: Jan 2007
Posts: 13,265
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#22 | |
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Moderator
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Example: 7.5 inches = stock 8.0 = 2lbs 8.25 = 3lbs 8.5 = 4lbs 8.75 = 5lbs 9.0 = 6lbs 9.50-9.75 = 8lbs (looks like a steering wheel) Add approx .5 inches for every 2 lbs. Upper pulley 2.93= stock 2.80= +1-2 Psi 2.75= +2-3 psi All of these are estimated gains but should get close depending on the mfg. of the pulley
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#23 |
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Senior Member
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its pretty big ill measure it for sure...it was from rpm outlet. now i have stock throttle body and intake so maybe im hold ing it back.
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FRANK WHITE SLAMMED LIGHTNING No idea on power, just been tuning on the street.
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#24 | |
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Moderator
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stock airbox, stock TB, stock plenum, Dirty intercooler 4psi pulley made 13.5-14 psi even with a vaccuum leak AEM Brute force,ported TB, and clean intercooler 4psi pulley made 13.5-14psi on same guage. Biggest diference was when I adjusted the boost actuator, even on stock pulley I noticed a diff. on the guage probably due to the butterfly seating better and sealing up the leak by. I think the reason that when people install all that stuff they see a boost diff. is because they adjust the actuator when they install a plenum or blower. I may be wrong, but all that stuff including a SC port just adds flow and efficiency not pressure.(those two things do add HP though) Also I have added a 2.75 upper pulley to my 5lb lower pulley, before upper I would see 8 psi and then it would climb to 14.5-15 psi on the same guage. After the upper I see an instant 10 psi then it climbs to 16.5-17 psi. I only see this in a 3rd gear pull. On 1st and 2nd i see it max at 14psi before shift change.
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#25 |
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Senior Member
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my lower is as big as a dinner plate...how do you adjust the actuator?
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FRANK WHITE SLAMMED LIGHTNING No idea on power, just been tuning on the street.
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#26 |
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Senior Member
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Who's dinner plate? some of us fat people have big ole plates. lol
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#27 | |
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Moderator
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Quote:
http://www.svtperformance.com/forums...d.php?t=225119 If you need more info just call me I'll PM you my phone #
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#28 |
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Senior Member
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you could get full with this one...dude how do you adjust this actuator i want more boost.
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FRANK WHITE SLAMMED LIGHTNING No idea on power, just been tuning on the street.
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#29 | |
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Senior Member
Join Date: Feb 2007
Location: Goose Creek
Posts: 892
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#30 |
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Senior Member
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NOW I DONT HAVE ANY CONVERTORS SO IM NOT GOING TO SHOW AS MUCH BOOST. I FORGOT ABOUT THAT
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FRANK WHITE SLAMMED LIGHTNING No idea on power, just been tuning on the street.
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#31 |
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Senior Member
Join Date: Mar 2007
Posts: 925
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Don't push the actuator down too much, you'll get into boost much quicker. You'll be at half throttle and be seeing a few pounds of boost.
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Black 2003 Cobra Ported, Upper/Lower Pullied, Sprayed......going corn Slow 2010 BMW 335i JB4-G5iso, DCI, E85 2002 GSX-R600 Full Bolt-ons |
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