does anyone have a system that is quite on the freeway when cruising say 2500 rpm and up but still has a mean sound, good flow and worth buying.

yeah, yeah! i hear hooker allot but is it some what quite on the freeway is the real question. i just went to north carolina for the holiday and took my iroc. big mistake, huge mistake. its fine around here in VA where they are so **** the speed limit is 55 but once i hit NC and speed goes up to 70 and i'm going between 80-90 to keep with traffic the tone of my flowmaster 80 gets really annoying. its just to damn loud on the open road for 3 hrs.

dont get me wrong around town the car sounds great but the next road trip i take in it i am wearing ear plugs above 65-70 mph.

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89 IROC-Z L98

 

You just gotta love NC. My dad has true dual Flowmaster 40 series with no cats and SLP heads on his 403 BB Trans Am(1979). NOW THAT! is loud.

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1987 Camaro Sport Coupe 305 V8 LG4-rebuilt-All Stock.

Future Mods: Flowmaster American Thunder 3 in. Cat-back, Catco High Flow Catalytic Converter, Hooker Super Comp Shorty Headers Jet Hot coated, K&N Air Cleaner, CompCam 264H, White Paint, IROC wheels, Alpine CDM-7871 CD player, Polk Audio speakers, Grant GT Rally Steering wheel,New Fuel Pump, Ground Effects, B&M Megashifter

 

Check out SLP's Catback system, nice sound driving at low to med speed and will not drive you crazy on the freeways.

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1987 Black Camaro IROC-Z (original owner) Replaced LB9 @ 86100 miles.
New 350 Crate engine
Balanced & blueprinted
World Prod SR 67cc Heads 9.6:1 C.R.
Cam: 454lift,216dur@50,110ls
TPI Induction(from 305)
22# Fuel Injectors
AFPR & Gauge
SLP Intake runners
Fastchip stage 2 chip
K&N filters & Air Foil
Hothkis STB
SLP 1 3/4 Headers
CATCO 3" Catalytic conv.
SLP 3" Cat Back Exhaust
700R4 Auto
SLP Torque Converter (2400 stall)
1LE Aluminum Dr Shaft
B-W 9 bolt rear 2:77 Possi. Four wheel disc brakes,245/45/ZR-17 Tires
17x8.5 ATI 5 Razze Wheels
Dyno results: 211 RWHP & 282 RWTQ.
271 HP & 362#/ft at flywheel with all Emission controls installed. New Toy!

 

well it depends on what RPM u cruise on the freeway. after i put on my 80 series my car was ALOT louder on the freeway, but after a while u DO get used to it and its not annoying anymore. 2500 RPMS wont be too loud,

and also, interior resonance has a ALOT to do with where the exhaust exits at, when i put on my 80 series, i had it exit right from the muffler with NO tips. and it shook the dash and was VERY loud in the car, after i put on my 3.5" tips that exit behind the car, its A WHOLE LOT quieter inside, but even louder behind it.

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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series Muffler added to Unkown CatBack, Ported Intake

http://www.geocities.com/david_angel_16
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[This message has been edited by breathment (edited November 24, 2001).]

 

well my flowmaster has dual 3.5 in chrome tips on it already so it exists out the rear pretty far. actaully its a ******* exhuast system, who else but a ******* would take a 3 in. I pipe and weld in 2.5 in pipe so you can run a 2.5 in/outlet flowmaster. the converter is rednecked to since it is rusted so bad i cannot get it off and they welded the egr tube on.

if you cannot tell i am going to be replacing everything on the exhuast side. my only problem is i dont think this particular exhaust is going to get any quiter. me and my wife felt like we went to a rock concert even the day after the trip, so getting used to it on freeway trips in NC would just mean i am going deaf. below about 70 mph the tone is easily dealt with, but about 75 it just keeps getting louder.

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89 IROC-Z L98
K&N's
hypertech thermomaster
flowmaster 80
ported plenum

 

There is no EGR tube on the cat.

 

but there is, on v6 models its not used, on v8 models it is used.

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89 IROC-Z L98
K&N's
hypertech thermomaster
flowmaster 80
ported plenum

 

That's an AIR tube on the cat, not an EGR.