kd86rx7

iTrader: (1)

hey would the racing beat presilencer connect from my racing beat headers all the way to the y pipe, thus taking out ALL of the cats? how long is the presilencer?

thanks

1987RX7guy

iTrader: (3)

RB has more than one pre-silencer. you nee the correct one depending if you have an S4 S5 AUTO VERT etc. yes they do bolt on to the streetable header and the Y-pipe.

Bukwild

why do you want a presilencer? You don't drive a Kia. A rotary is supposed to be loud.

1987RX7guy

iTrader: (3)

Pre-silencer are used to actuate the auxilary ports on S4 N/a's.

Bukwild

their are a million how-to's to fix that on this forum. Their is no reason to have them unless your grandfather drives your RX.

1987RX7guy

iTrader: (3)

Auxilary ports make the car more drivable. You loose enough low end to make the car feel like crap. The other day I tried this and I almost kicked my car cuz it sucks ***** down low. I don't like to drive at 4k rpms in traffic its annoying and wastes more gas than needs to be wasted.

Not to mention you don't gain **** from wiring them open.

kd86rx7

iTrader: (1)

where can i get the presilencer at? if i dont get a presilencer wat do u suggest i replace my cats with?

kd86rx7

iTrader: (1)

its for my 91

1987RX7guy

iTrader: (3)

If you don't want a pre-silencer get a high flow cat that goes with the header you have.


www.racingbeat.com is where you do and guy them

kd86rx7

iTrader: (1)

which gives more power? presilencer or high flow cat? does the presilencer take away any power?

1987RX7guy

iTrader: (3)

The pre-silencer will probably give better power. All it is really would be like a straght through muffler but with SS and CERAMIC wool inside of it to muffle the sound.

ilike2eatricers

I would say the presilencer gives more power because any cat is a restriction whether it is high flo or not.

By the way kd86rx7 bought my 91 NA. Congratulations.

I just picked up my 89 TII last nite. Congratulations to me.

kd86rx7

iTrader: (1)

they bolt on to the streetable ones wat about the road race ones? heh

1987RX7guy

iTrader: (3)

The raod race header does not collect. The true duals I have use this type of header and then use an extension that spits the two pipes apart a bit to allow for the silencers that come with the Duals to fit in tandom, The True Duals from what I can tell use 12A silencers while the ones that are used with the streetable header are made for the FC so its not them same silencer we are dealing with. I guess you could do the same thing but you would need two silencers and a collector or extensions to make your own true duals.