turtle

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.

------------------
89 IROC-Z L98

MetKiss316

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.

------------------
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

Z28DJP1987

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

------------------
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!

breathment

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.

------------------
- 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
\

[This message has been edited by breathment (edited November 24, 2001).]

turtle

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.

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

crucial

There is no EGR tube on the cat.

turtle

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

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

Jza

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