Can you just "hollow out" a catalytic converter with a broomstick?
10-08-2015, 02:01 PM
#21
Melting Slicks
10-08-2015, 08:59 PM
#23
I wonder if anyone has done this on an 84-85, remove the converter, cut the rear Y pipe so it can be lengthened, & bolt the rear Y pipe to the front one. Then you can weld in the rear sections going to the mufflers. I'd do it at the straight portion of the rear Y pipe.
10-10-2015, 06:43 AM
#25
10-10-2015, 07:56 AM
#26
Team Owner
Some people want the nose to "advertise speed", some have it plugged and don't want to pay to fix it. I tried running a test pipe and decided to install a Random Technologies cat because I was tired of the extra noise. I don't think it takes enough power away to count unless you are a race car where every little bit might help you win the purse.
10-10-2015, 08:51 AM
#27
Some people want the nose to "advertise speed", some have it plugged and don't want to pay to fix it. I tried running a test pipe and decided to install a Random Technologies cat because I was tired of the extra noise. I don't think it takes enough power away to count unless you are a race car where every little bit might help you win the purse.
- that pretty much says it all. 
I had a test pipe on my 85 when I purchased the car. i'm thinking the original owner installed it, since the 2nd owner only had the car for a short period. when I installed a new cat, I really didn't notice any, seat of the pants, performance gains. i'm thinking modern day cats flow a lot better than the stuff from the early days.
Last edited by Joe C; 10-10-2015 at 08:57 AM.
10-10-2015, 10:10 AM
#28
Team Owner
- that pretty much says it all. I had a test pipe on my 85 when I purchased the car. i'm thinking the original owner installed it, since the 2nd owner only had the car for a short period. when I installed a new cat, I really didn't notice any, seat of the pants, performance gains. i'm thinking modern day cats flow a lot better than the stuff from the early days.
10-10-2015, 10:34 AM
#29
10-10-2015, 12:05 PM
#30
Team Owner
10-11-2015, 05:26 PM
#31
Melting Slicks
10-11-2015, 06:39 PM
#32
I wonder if anyone has done this on an 84-85, remove the converter, cut the rear Y pipe so it can be lengthened, & bolt the rear Y pipe to the front one. Then you can weld in the rear sections going to the mufflers. I'd do it at the straight portion of the rear Y pipe.
10-11-2015, 10:27 PM
#34
Team Owner
But it will drone so unless you have some sort of reason, I wouldn't. I did get pulled over for loud exhaust before. Sure, I got off but that is another story. It was the hassle.
10-11-2015, 10:29 PM
#35
Team Owner
10-11-2015, 10:49 PM
#36
Melting Slicks
I couldn't tell a difference in my 86 pre and post cat gutting other than it was louder. 1/4 mile times were the same.
Which is strange since closing the power effects mufflers off to quiet mode killed performance compared to the wide open setting. But the cat had no effect other than noise.
Which is strange since closing the power effects mufflers off to quiet mode killed performance compared to the wide open setting. But the cat had no effect other than noise.
10-11-2015, 11:13 PM
#37
Team Owner
I couldn't tell a difference in my 86 pre and post cat gutting other than it was louder. 1/4 mile times were the same.
Which is strange since closing the power effects mufflers off to quiet mode killed performance compared to the wide open setting. But the cat had no effect other than noise.
Which is strange since closing the power effects mufflers off to quiet mode killed performance compared to the wide open setting. But the cat had no effect other than noise.
Maybe the cat was NOT the choke point. Maybe the exhaust manifold was the choke point?
10-12-2015, 12:25 PM
#38
Drifting
Big mouth you have when you know your wife isn't reading the forum.
