Hi All,
Just got back from the shop, where I work, with great news. My Tech, Adam, installed a Summit Racing narrow X pipe on my wife's 90 ZR1 and the loud droning that was real bad is gone. Not just reduced but gone. No change to the mufflers is planned until they need to be replaced.
Since sound is a tricky subject so I'll describe my wife's system as the results we got may not be the same as any other owner will get.
1990 ZR1
Std exhaust headers/manifolds
Std Cats in place
2 1/2" st st pipe to Summit Racing Narrow 2 1/2" X pipe (not stainless steel)
X pipe back to mufflers is 2 1/2" st.st.
Mufflers are older Flowmasters with dual tips.
Prior to install of the x pipe the exhaust was "true dual".
What a difference with the X pipe.
My Tech, Adam Rainville, has the touch with Vettes as he really likes to work on them. He did a great job.
Regards
Don in VT
