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05-30-2007, 07:34 PM
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3800 Supercharged GTP INtake/Exhaust
I have a 04 GTP CompG and am looking to do a intake and exhaust system, it has been my opinion in the past that Flowmasters although wonderful on muscle cars are not the best for fuel injected applications, but I have been told for a blown car, it could be the best, and I am having a hard time swallowing this, because I would think a straight through system would be better for air flow. DOes anyone have any real experience that I Can vibe off of.
Any suggestions for an intake?
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2004 Ivory GP GompG 3.4" SLP Pulley K&N 57 Series FIPK Autolite 103 Plugs .55 Gap     
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06-17-2007, 11:25 PM
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Re: 3800 Supercharged GTP INtake/Exhaust
wizzaired intake from zzperformance.com is good I use it on my s/c regal
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Currently Black 98 Regal GS Wizairred Cold Air box w/4inch KN, zzp 3.4 mps, zzp powerlog, zzp 304 3inch DP, zzp offset poly mounts, zzp s/c snout (reman), 3 inch motorback exhaust, 3 inch Dynomax Ultraflo, AL103's, Intense-Racing PCM, 10,000K HID conversion, 12% Black tint, summer wheels Eneki 17's. 13.95@99.95mph in 1/4 as of summer '07 RIP 3300 V6/4T60 2.5 Catco to 3'' Dual glasspack exhaust and 5'' tips. 3'' K&N cone abs CAI Accel injectors Superchips
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06-18-2007, 01:56 PM
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Re: 3800 Supercharged GTP INtake/Exhaust
I will check it out, thank you, that is one site I have not found yet.
If you are ever looking for other stuff, check out www.3800performance.com or www.slponline.com
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2004 Ivory GP GompG 3.4" SLP Pulley K&N 57 Series FIPK Autolite 103 Plugs .55 Gap
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06-19-2007, 03:24 AM
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Re: 3800 Supercharged GTP INtake/Exhaust
flowmasters suck cat backs dont get much power on pretty much stock 3800's my recomendation is a downpipe first, high flow cat, and later on down the line some headers but for now a 2.5in downpipe would help you the most and for a little over a hundred bucks who could beat that
check these links www.intense-racing.com www.zzperformance.com www.wbodystore.com www.3800performance.com
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L27 ,P&P LIM gasket matched to head,PEM's,2.5' Cat delete,FWI,,series one uim swap,gutted L36 TB,85mm maf ,Apexi SAFC,denso iridium plugs,8000k hid's,B&M shift kit plus adj. vacum modulator, custom Engine mounts, alternator rewire,Camaro SS calipers w/ BAER crossdrilled/slotted rotors,,PCV mod,wrapped headers and crossovers,3' high fllow cat with hooker ultra-flo muffler,30# injectors from buick GN,
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06-20-2007, 01:29 AM
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Re: 3800 Supercharged GTP INtake/Exhaust
Finally someone comes through...thank you.
I just got the mods listed on my signature, what do you think about the down pipe I have listed? I am in Ca so that limits my choices as well when it comes to legal.
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2004 Ivory GP GompG 3.4" SLP Pulley K&N 57 Series FIPK Autolite 103 Plugs .55 Gap
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06-20-2007, 07:25 PM
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Re: 3800 Supercharged GTP INtake/Exhaust
yea i would go for 3in downpipe with the mods until you drop down to a 3.0 pulley. Otherwise get the 2.5 DP like i said earlier its one of the best bang for the buck mods to do on 3800's
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L27 ,P&P LIM gasket matched to head,PEM's,2.5' Cat delete,FWI,,series one uim swap,gutted L36 TB,85mm maf ,Apexi SAFC,denso iridium plugs,8000k hid's,B&M shift kit plus adj. vacum modulator, custom Engine mounts, alternator rewire,Camaro SS calipers w/ BAER crossdrilled/slotted rotors,,PCV mod,wrapped headers and crossovers,3' high fllow cat with hooker ultra-flo muffler,30# injectors from buick GN,
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06-27-2007, 10:28 AM
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Re: 3800 Supercharged GTP INtake/Exhaust
If you're running with the 3.4" now you need to get the air flow mods on quickly so that high KR doesn't take out your engine. Did you scan your engine before and after changing pulleys to see the difference in KR?
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04 GTP CompG ZZP CC PLOG, ZZP 304 3" Hi Flow Cat DP, Borla Catback, 180 Tsat, TR6's, 3.5, K&N CAI, SS Ultra 4000K
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06-30-2007, 12:16 AM
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Re: 3800 Supercharged GTP INtake/Exhaust
as far as flow and sound get spintech mufflers they sound outrageous and flow very close to straight through mufflers. they sound good on V6 motors as well. i've heard the way some 3800's have sounded with the wrong muffler, it sounds rice... with a spintech you should have a nice grumble.
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2005 Pontiac GTO 12.75 @ 110mph LS2/T56. Torrid Red/Anthracite Black. Mods: 160 thermostat, MVP drag bags, CAI inc. air box, SLP long tube headers, Spintech mufflers, SLP 455 tune, factory rear wheels widened to 9". 1994 Buick Roadmaster Sedan. LT1/4L60e. Ruby Red Metallic. Mods: K&N FIPK.
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06-30-2007, 12:22 AM
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Re: 3800 Supercharged GTP INtake/Exhaust
here is how spintech sounds with a 3800
(fiero with 3800 s/c swap.) http://www.youtube.com/watch?v=YV5rd_Z9l2k
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2005 Pontiac GTO 12.75 @ 110mph LS2/T56. Torrid Red/Anthracite Black. Mods: 160 thermostat, MVP drag bags, CAI inc. air box, SLP long tube headers, Spintech mufflers, SLP 455 tune, factory rear wheels widened to 9". 1994 Buick Roadmaster Sedan. LT1/4L60e. Ruby Red Metallic. Mods: K&N FIPK.
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