Make this quick

95 Single Cat LT1

Need place to put 3" Cutout

Need pictures so I can tell where to weld

No removal of cat (VA)

Thanks a million whoever can gimme these

Need it for this weekend

 

I dont really have any pics to post, but I installed mine right before the bend of the exhaust pipe at the back. This is right before it goes up and over the rear axle to the muffler, makes it easy to access and keeps the cutout after the cat. Hope this helps.

 

search for it...there are tons of pictures, just be sure to search titles only!

 

ive got a few in my cardomain: first link in the sig, page 2

 

Isnt the point of installing a cutout to bypass the cat/muffler restrictions? I thought you should install them before the cat.

 

The point is to bypass the muffler and axle bend restriction, no so much the cat. I gained I believe 7 RWHP with my cutout open at the LEAN! A/F ratio and mods in my sig.

 

What size is the pipe before the cat, on a single cat setup?

 

The best place to put it(IMO) is about 8" forward of the axle bend. This way there is room if you decide to get an electric head for it. Plus when it is open, it is not as loud.

 

I dont have a single pipe before my cat (maybe mines aftermarket?) but if i wanted a cutout setup before the cat I would need two since my y-pipe comes together right at the cat. Pic I also think LT1s need a certain ammount of backpressure... and also dual cutouts before the cat would be insanely loud... probably not streetably loud. My cutout after the cat is loud... definetly enough to turn heads, but its also quiet enough when I let off the gas that most cops wont care (but I dont take that chance and just close the cutout whenever I see one)

 

Ok, I just ordered one from DMH. I ordered the 3" one to go behind the cat, but the cat on my car is hollow so its probably going to be really loud no matter where I put it. It was only $170 with the group purchase, but the GP ends today so if anyone elese is gonna order one, Do It Now!

 

for future reference, there is no generic 'right' place to put your cut out. the only way to know where you are going to gain the most power is to go drive the hell out of your car and take an infrared thermometer and slowly take it down the exhaust system and watch where the EGTs fall off. or, if you dont have a good thermometer, take some high temp paint and paint from your y-pipe back. wherever the paint stops melting off, stick the cutout there.