i had a cat del mated to a JIC TI catback and dayum its loud. I get too many fix it tickets so I just said screw it...im going HFC, it will quite things down a bit. I dont think youll feel a difference betweeen CD and HFC..if you do its very minimal. Only reason Id get it is to quite down the tone a bit and make the pigs happy.

 

if u can go catless, get rid of the cats!

 

Does anyone have any sound clips for comparison?

 

I've heard you can get some flames without the cat. Also, heard it can cook the bumper a little. Any of you guys without the cat get flames poping out? Burnt bumper? Is that on only more modded cars or can it happen stock.

I would think it could happen. These cars run rich as it is and once a nice load of uncatted unburnt hot fuel hits the air... pop!

Call me rice but that is kinda cool. I don't want a burnt bumper though.

 

I switched from a cat delete to a hi flow cat as catless gets really loud in cold weather. May switch back to test pipe during the summer. Buy yes you will get a lot more carbon build up on the bumper

As for flames, I don't think you'll shoot flames on the street. I've never tracked the car with a high flow cat but cat less (stock except for a TBE) my car would shoot flames like crazy at the track. sometimes the flames would be more than 2 feet long and hang for a while. Burnt the bumper a little bit.

As for the power difference, i think it's there esp on top end. I don't remember really well as i switched a few months ago. I have the UR testpipe and high flow cat. I've heard that the UR makes a good HF cat. Never did a dyno comparo b/w the two so can't really say anything for sure.

 

How do you feel the car (engine response/spool up) after a HFC or CD?

 

i've heard of more problems with electronic CEL fixes than mechanical ones. it's up to you but i would go mechanical. they're also much cheaper.

 

i never used a high flow cat but between the stock cat and a 3 inch test pipe there's a night and day difference with faster spool, more power, and hell of alot louder too, especially if you have a greddi ti!!

 

depends it the pigs are dicks or not in your area if they are go hfc if not go test pipe

 

test pipe all the way...

 

get a resonated test pipe. it has several advantages


1. to the untrained eye, the enlarged barrel section of the resonated testpipe appears as if its a cat converter

2. It takes out the nasty rasp that is heard without a cat converter/resonated test pipe

my megan tbe test pipe is resonated, great quality and fitment, check it out.

 

typhoon... quick take it out! that thing is horrible =o

 

Is your Megan test pipe 3 inch on the inside of the resonated area? I got an LPI test pipe and it was 3 inch at the mouth and 2.5 inch in the resonated area.

 

NO cat gets my vote!!!