Rattaan

I'm sure some of you have had you car equipped with one and the other at some time. I'd like to know which is louder, which is lower, and how much of each? Also, is there alot of droning noise with a header/presilencer set-up? I'm very interested in knowing before I buy, to decide if I want to continue my battle between radio and exhaust or not. Thanks for any info!

Kenteth

all honety, i dont feel straight pipes or open headers are streetable. Hope you're planning on a nice catback.

Rattaan

Actually I mean straight pipe as in no cats, and then a cat-back with y-pipe and mufflers as opposed to a header/presilencer and y-pipe and mufflers. I wouldn't use a straight pipe only unless I was goofing off and finding out how loud it could be. With the straight pipe and HKS cat back I currently have there is a good bit of droning at around 3-3.5k rpm when held constant. I just want to know if a header with presilencer is the same or better or worse?

rx7style

iTrader: (1)

I have RB dual race headers with straight pipe to Brullen oversized mufflers, and it's so loud I get complaints so often, but also the same amount of praise for my setup! It's terrible for highway trips... I can hardly hear my stereo when it's 3000-4200 RPM. So, unless you go all out on sound dampening in the cockpit, you're looking at a lot of noise with headers and straight pipe.

1987RX7guy

iTrader: (3)

DUALS are not loud RB stuff is nice and quiet.

SonicRaT

iTrader: (6)

Well, depending on the dual setup you use, they can either be ear splittingly loud, or just great sounding like the MT duals 87RX7Guy loves so dearly. I still want to get a race header and run two presilencers on apexi N1's, but that's a bit expensive at the moment for me

rotary>piston

with my header and presilencer it's hard to carry on a conversation while accelerating. And on the highway, if you're on the throttle, you can't hear anything but the engine. What's cool though is if I give it just a tiny bit of throttle, the engine becomes silent inside the car.
Needless to say, I coast by cops whenever possible.
In terms of power: a header system, compared to the stock manifold and straight pipes, is supposed to be about a 13 or so hp increase. If you line the manifold up next to the header you'll see why.

Carlos440

I have a bonez race pipe with the precilencer and APEXI Duals, and the sound is really nice, not too loud and the sound is bassy.

Tremordsl

WOOHOO....just got my car back to gether and running. Ran into a few snags but managed to get it all back together in one day.

I have a RB header with custom pipe (pics on www.kickme.to/tremor soon) using stock rear portion. Havent taken it out on highway yet but throttle response is much better, its loud when getting on it, kinda raspy. May be too loud for most people but its my alternate car since it has no a/c. I will comment more later after driving more.

Tremordsl

After driving up the highway into the next town doing around 80mph I dont think its too loud while cruising. When under acceleration it sounds loud though.

von

I agree wile giong up hill and luggin it , it drones but crusing is fine with the header streight pipe. Its definatly streetable unlike some pieple say. Their cat back projbly ads alot of unecesary sound.