Removed Pre-Cats Yesterday...
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,525
Likes: 1
From: Sarasota, FL
Removed Pre-Cats Yesterday...
and does my car sound KEWL! It is louder, deeper, and the annoying 1100-1300 rpm resonance is gone! I haven't driven it too hard yet to see if it is much faster, but it sure is louder! When I looked at the cats after removing them they looked bad, but not awful. I just replaced them with exhaust pipe. For pix and more details take a look at
http://www.corvetteforum.net/c4/bobmachus/index3.shtml
To get a look at my full length ramps check out
http://www.corvetteforum.net/c4/bobmachus/index4.shtml
Lemme know what ya think. While the car was up in the air I replaced the O2 sensor (still original), and also put a new cap and rotor in. Hopefully I am getting closer to spinning those tires.
http://www.corvetteforum.net/c4/bobmachus/index3.shtml
To get a look at my full length ramps check out
http://www.corvetteforum.net/c4/bobmachus/index4.shtml
Lemme know what ya think. While the car was up in the air I replaced the O2 sensor (still original), and also put a new cap and rotor in. Hopefully I am getting closer to spinning those tires.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Removed Pre-Cats Yesterday... (BobMachus)
Now that's the ticket. I had my front Y replaced with a custom 2 1/2" SS one. That combined with hi-flow cat and good cat-back netted me about .3 sec off my 1/4mi ET.
I bet Co is a bummer with that high altitude. Sounds like the ideal place for a blower. You could use it to just compensate for what the altimiter takes away, and maybe a wee bit more.
I bet Co is a bummer with that high altitude. Sounds like the ideal place for a blower. You could use it to just compensate for what the altimiter takes away, and maybe a wee bit more.
Safety Car
Joined: Dec 2000
Posts: 4,849
Likes: 0
From: South Carolina
Re: Removed Pre-Cats Yesterday... (BobMachus)
Nice job............you could make some money with skills like that........I'm sure there are quite a few L98 owners in your area that would be very happy to throw some business your way.
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: Removed Pre-Cats Yesterday... (BobMachus)
Bob
Great write up on your website.
I am in the process of removing my front Ypipe and replacing it with a straight Ypipe. I unbolted it yesterday and had no problems with the bolts or the studs.
Vic
Great write up on your website.
I am in the process of removing my front Ypipe and replacing it with a straight Ypipe. I unbolted it yesterday and had no problems with the bolts or the studs.
Vic
