I'm getting a gsr engine ready to swap into my ls ... and the ls needs a new cat to smog.

Am I going to run into any issues with the cat / exhaust when I swap the gsr engine in?

Do I leave the ls header on the gsr block? Is that even possible? ThankS!

 

anyone?

 

just get the ls header if you need it and ls cat for your car,, no need for gsr, unless you like to change the b-pipe. or you can get 00-01 gsr cat same size cat as 94-01 ls but i belief there the same as ls.

 

and if you need to confirm what i said, look it up on team-integra and there's a diagram there too. i've look it up before when i bought the wrong b-pipes meaning my cat was too short(gsr) ls cat are about 3 inches longer. so i did my research but it be better if you look it up to be sure..

 

you can just use the ls cat and ls header, it'll be easier and there's nothing wrong with using it, the gsr cat is longer than the ls cat i believe, and the ls header is longer than the gsr header, the flange is also off by a little, so gsr and ls won't fit right.

 

cool thanks for the info fellas

I will leave the ls header and cat on until I can find a gsr oem header and 'test' pipe haha