I have a 91 crx hf that needs a exhaust badly. Can I bolt up a si exhaust to a hf with no problems? Will I need to switch to a si exhaust manifold? I do plan on going to a N1 or a 2.5" but not sure if that will hurt me on the hf engine that i will be using for sometime till mine other motor thats getting built is done, wont be done till late this year. Any help or advise to do?

 

If your looking for asounds if you do anything w/the hf manifold it will be super quiet,I had a standard hatch same header as your HF w/ 2 1/2" all the way back to an N1 couldnt even hear it..lol and the cat was hollowed..So if your looking for a hollowed cat lmk ill hook ya up.

 

Someone told me about Tampa Customs. Will they remove my cat and use a test pipe if I want? I also am using a es oval. I wanted to keep the stock postion of the orginal hf or any crx how the muffler sits sideways. That or maybe someone closer? Or anyone that can do good exhaust work for me?