superevil

hello fellows,hey 86 13b na,would a decent cold air intake and a decent exauhst from the cats back make a decent diference?if so how much?

Juan

iTrader: (28)

A decent straight pipe will decently increase your decent engine's stock power (which is pretty decent already!). A decent intake will give you a small decent increase in air flow. A decently executed search will give you many decent results with decent information. Thats my decent opinion on this decent topic about decent exhaust and decent intake systems.

1987RX7guy

iTrader: (3)

well about 10hp maybe. why just a cat-back?

bingoboy

that will most definately make a noticable difference. while you're doing that you might want to check your cats to find out if they've died or not. my friend's 89's cats were fried and when he ripped them out and replaced with straight pipe that made a bigger difference than changing his exhaust out.

skydivr73

bingoboy--man where did you ever get that avatar??? PLEASE let me know......that's a trip!!!

Rex_Experience

LOL, thats some decent use of the word decent.

projekt

HAHAHAAH at wan!

Juan

iTrader: (28)

superevil

well,someone told me that if took out the cats,the is some thing that opens to release back pressure,and i wold have to wire something to make it work if i took off the cats,is that true

1987RX7guy

iTrader: (3)

yeah if you put a race pipe in you will need to wire your auxilary ports open or find another way of making them open. I would just get a pre-silencer from racing beat with a header and a nice cat-back. That would probably give you like 20hp

Juan

iTrader: (28)

Racing beats pre-silencer comes with a split air tube connection so your auxilary ports (5th & 6th port actuators) fuction like stock. If you get someting else, you'll have to wire the ports open.

check www.racingbeat.com or www.mazdatrix.com for exhaust systems.

rotary>piston

cat-backs do almost nothing for power. Even after getting my header/presilencer the only improvement the cat-back made was in the sound dept.
Oh yeah, my cone filter also made zero difference, but it only cost me $25.

superevil

i dont want to pester you guys.i know the header would be the main exaust part off of the block.what part is the pre-silencer?so,if i get a header and pre-silencer from race beet,i wont have to wire the aux ports open right?.if i ran the header,presilencer,straight pipes and mufflers or muffler.would i be to loud?

1987RX7guy

iTrader: (3)

a pre-silencer is basically a straight through muffler.

dr0x

Depending on the muffler(s), size of pipe, quality of the presilencer, yes.

superevil

thanks a lot you guys

superevil

ok another question here,my cluth is about 20k old and works good.but sometimes,when im using the clutcha little more,like an uphill starts,the whole car shakes,the clutch engages fine,and the car takes off at good speed,it just shakes

dre_2ooo

HEADERS

They will more than double the HP gains a cat-back alone would give you....

1SxyRXy

Rx7Nub

Postwhorre.

Get some header's and the rb presilencer(so you don't have to wire the ports open), then get an exhaust shop to fab u up everything after the pre-silencer.

DrifterFD3S

someone should point this guy to a write up on wiring your auxies open.....heh, auxies...may have stumbled on to something there