Quote:
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Originally Posted by mrzzzr1
History:
I have full length tube headers and used to have flowmaster exhausts.
Last month I replaced the flowmasters for Corsa's to reduce/elimiate a resonance/droan sound at hightway cruising speeds (65-80 mph in 6th gear)
Corsa told me that it would be agressive without CATs and they were more than right.
With the Corsa it is somewhat quieter at steady highway cruising speeds.
At accelleration 1/2 throttle - to full throttle it is now louder than ever. Runs great and sound good for a race car but with the wife in the car it is not just agressive but extremely agressive, plus I don't want to advertise to every cop in ear-shot that I just jumped on it.
My mechanic and I are now discussing adding some short cats somewhere probably into the headers. He recommends not putting my original factory headers/cats back on but keeping them on the shelf incase I ever want to restore the car back to stock. Plus more problems if the original cats fail and have to be replaced.
Please help if you've solved the same problem or if you have some good advice to share. Thanks in advance.
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Did you replace with the entire CORSA system to include the centerline resonator or simply replace the mufflers? If you didnt then thats the problem.
If replacing the Cats Jeffvette reccomends going with either the Random Techs or Flowmaster Cats.
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GOLDCYLON - 91 ZR-1 #2014
GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's)
GOLDCYLON - 11 CTS-V
Arizona State Director
91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat
90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat
11 RED/GREY CTS-V