i got a stock 91 N/A vert and i was told the catalytic converter was fucked up. and i wanted to know if i could just pull it off and replace it with a straight pipe??? and what do i do with the split air pipe that goes to the converter?

 

Question 1)Yep
Question 2) don't worry about it...no cat, no need for split air pipe.

Just consider the emissions laws in ur state first!

 

I just got the bonez RP and I thought there was a place to bolt up the split air pipe to it but I don't know. I don't see anything...can anyone give me some general Ideas. Oh yeah get it from RX7 PERFORMANCE in Garland Texas...man that place KICKS ***!!!! Free shipping and it came in less than a week..NOW that is SERVICE!!!

 

what kind of pipie should i use (stainless steel, ect...) and if anyone know can they give me about what size pipe i should use?(lenth width)?? atleast i don't have to worrie about the emissions laws where i live they never check you for a converter
thanks for the help

 

dude, go for stainless steel for sure. You don't want that mother to melt. Rotarys produce alot of heat. Besides, shell out the extra few bucks, and get a Bonez Racing Pipe. It'll do the same thing, except your car won't sound like ****, and there's no custom work to be done. everything comes pre-fabbed.

 

Definately go with stainless steel, but try to get a full cat (pre cat and main cat) replacement with a presilencer. You will not need the air pipe that goes to the cat anymore, but be sure to keep your air pump. That is what activates your 5th and 6th ports!

What color is your 'vert? How many miles does she have?
I have a white on blue '91 vert with 64500 miles


Kris

 

Lol, Louisiana? No emissions Rip that cat out baby!

Steve

 

Melt?! Dude, mild steel melts at 2600ºF! If your exhaust gets that hot, you've got other more important problems than what your exhaust is made of...
Mild steel is fine for any road car exhaust. SS is good for looks and longevity, but you won't be able to see it and you'll probably sell the car before the MS rots, and MS is a lot cheaper.

 

THIS SHOULD TELL YOU


THE OLD GIRL GOT 140,150 MILES
I WANT TO GET ANOTHER CAR SO BAD (DON'T WORRIY I AM NOT SELLING HER I LOVE HER TO MUCH)I DRIVE HER 150 MILES A DAY 5 DAYS A WEEK FOR SCHOOL AND WORK
BUT SHE IS STILL RUNNING STRONG ON THE ORIGINAL ENGINE AND TRANNY (<-----HOPEFULLY WILL HAVE ENOUGH $$$$ TO CONVERT HER TO A 5-SPEED BY AUGUST)

 

HOW MUCH DOES A Bonez Racing Pipe COST AND WHERE DO I ORDER IT FROM???

 

EX810626 Bönez 2.5" Race Pipe with Presilencer (89-91 5-speed only) $150 from www.rx7.com

The Bönez Race Pipe and Presilencer Exhaust system consists of heavy walled 2.5" Aluminized mild steel exhaust tubing with an incorperated presilencer for noise reduction . This unit is a bolt up one piece system that replaces all the cats and pipes from the stock exhaust manifold to the stock y-pipe.


NOTE: This system is illegal for street use.

 

well like i said no emission laws in louisiana (atleast none down here where i live) but i guess i will have to wait to get it cause at the moment i got a auto and i switching to a 5 speed

 

Yeah, in that case, wait until you drop in your new tranny. I don't think it will fit otherwise. (correct me if i'm wrong)

 

yeah it says its for a 5-speed only so i will wait

 

hate to bring this back from the dead but.
if i take the cat off and take all the **** on the inside out
would that be just as good as a straight pipe?

 

No, not even close. The dramatic increase then decrease in flow area causes a lot of turbulence. Get a straight pipe.