How much noise with a HF cat and....
Thread Starter
Junior Member
Joined: Dec 2002
Posts: 20
Likes: 0
From: HK
How much noise with a HF cat and....
I was planning on puttin a High flow cat in my car. Just want to know how much more noisy my car will become after that? also do i need to port the wastegate with a highflow cat too or is it only with the midpipe?
You don't need to port the wastegate when using a hi-flo cat. It has enough back pressure to keep boost creep from happening.
As far as noise, that mostly depends on your catback.
As far as noise, that mostly depends on your catback.
Senior Member
Joined: Aug 2002
Posts: 338
Likes: 0
From: Navarre, FL
With a HF Cat and the RB dual tip, the car is a bit louder at idle and cruise conditions, but nothing offensive. It will draw attention when you get on the throttle though. That has it's own good and bad points 
Cheers,
Cheers,
Senior Member
Joined: Oct 2002
Posts: 276
Likes: 0
From: Charlotte, NC
With a HF Cat and the RB dual tip, the car is a bit louder at idle and cruise conditions, but nothing offensive. It will draw attention when you get on the throttle though. That has it's own good and bad points
Originally posted by rx7machine
What's better to get.. a HF cat or a dp and mp? For more power and better reliability wise..
What's better to get.. a HF cat or a dp and mp? For more power and better reliability wise..
Trending Topics
Senior Member
Joined: Oct 2002
Posts: 276
Likes: 0
From: Charlotte, NC
Reliability wise? Well, IMO, the hi-flo cat. It has enough back pressure to keep boost creep from happening thus allowing you to control boost easier. However, a midpipe will give you better performance, but you have to be ready to deal with being able to control your boost (not to mention smelling like an exhaust pipe every time you drive your car).
Originally posted by rx7machine
A boost controller would help the boose creep out, right? If I get the PFC, do I have to get a boost controller too, or will the PFC be able to do it? thanks.
A boost controller would help the boose creep out, right? If I get the PFC, do I have to get a boost controller too, or will the PFC be able to do it? thanks.
https://www.rx7club.com/forum/showth...hreadid=140920
Senior Member
Joined: Oct 2001
Posts: 611
Likes: 0
From: Maryland, GERMANTOWN
hey i have the apexi GT cat and a random tech main cat i didnt notice a diff in sound but i did notice that the stock main cat was deeper but its still loud as hell i have to turn up my radio
Senior Member
Joined: Jul 2002
Posts: 653
Likes: 0
From: TX
Get a midpipe, its lighter and much cheaper. I got no boost spike or creep with my mp and felt the power right away. Best mod I ever did. Only draw back is that there is no hook up for the airpump and its makes the garage smell. Oh yes and its gonna be louder than a hi flo cat, watch out at full boost cause it screems 
Thread
Thread Starter
Forum
Replies
Last Post
ls1swap
3rd Generation Specific (1993-2002)
17
Jun 3, 2024 03:25 PM