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Thread: i upped my boost ?

  1. 09-09-2007 09:22 PM #1
    Ramsey
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    i upped my boost ?

    well i decided i was going too push it a little more ,i went from a 3.33 pulley to a 2.87 pulley nice difference in power.actually SWEET. NOW .what i didnt realize is now i have more backpressure and when im on the highway at 80-90 mph i seem too be feeling backpressure and i never did before,when i go too slow down i feel it bigtime .is this something too worry about ,if so how do i treat it?im pretty sure its normal when adding compression .do they make a blow off valve or something like that.any precautions or info would be appreciated.o im also obviously seeing higher intake temps.is this a major concern what are considered adequate ,safe iats at cruising speed or even in town with this kind of boost?thanks.am i damaging anything ?
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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  2. 09-09-2007 09:49 PM #2
    Ramsey
    Ramsey is offline Senior Member
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    C,mon Are Ya Kidding Me ,i Thiught I Was Going To Bed Early!all The Guys On Tonight.lol
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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  3. 09-09-2007 10:28 PM #3
    RedHeartbeat
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    You can put a blow off valve in the intake pressure tube if you want to guaranty that you don't overboost. Did you adjust the tune for the added boost? Are you monitoring knock? Are you watching the AFR since the change? Gotta be careful with the added boost.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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  4. 09-10-2007 06:03 AM #4
    Ramsey
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    thanks red ya ive been monitoring,everything,
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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  5. 09-10-2007 06:05 AM #5
    Ramsey
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    any other suggestion or helpful hints
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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  6. 09-10-2007 10:05 AM #6
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    txarkitekt
    txarkitekt is offline Resident Smart Ass™
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    I think Red covered it...

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  7. 09-10-2007 04:51 PM #7
    Ramsey
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    can anyone tell me what kind of blowoff valve ?i dont want something noisy ,like some ive heard.and just too be clear i dont mind the boost im not looking too blowoff the boost im looking too release the compression as rpm s drop .im not sure how too do it any input appreciated or links would be nice .
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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  8. 09-10-2007 06:27 PM #8
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    the_jester
    the_jester is offline hemi killer
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    well, i have a procharger and a it had a bypass valve with the kit but i replaced it with a turbo xs RFL and its VERY loud but it does release the boost when i let off the throttle. you REALLY HEAR it. scares the hell outta people. you could possible get a recirculated valve from an aftermarket company
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  9. 09-10-2007 07:56 PM #9
    Ramsey
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    ya i think thats probly what ill have too look for ,i dont want a rediculous sounding blowoff,now i just have to find one .tanks any suggestions for aftermarket recirc valve or something that might not be noisy?
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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  10. 09-10-2007 08:19 PM #10
    MikeGyver
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    What does back pressure feel like?
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