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-   -   exhaust ? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/exhaust-663047/)

firstgen689 06-17-07 12:11 PM

exhaust ?
 
im putting 2 1/2 stainles straight pipe with mangnaflow muffler what do i do with the o2 sensors get ride of them or can i get some different ones or use stock ones ive done some looking all i find is stock ones

kgray 06-17-07 01:01 PM

if you have a gslse you need them, but if not you can get rid of them. they arw a good tuning tool however

firstgen689 06-17-07 01:04 PM

ok sweet i have a gs

Roundabout 06-17-07 01:10 PM

The GS doesn't have any O2 sensors... it is carbed

firstgen689 06-17-07 01:31 PM

oh well then im crazy. it must be temp sensor or something

rotaxrave 06-18-07 01:05 AM

probably for the overheated exhaust warining light:icon16:

firstgen689 06-18-07 06:20 PM

yeah ok. im just gonna take it to a shop

HEYTOYOTAGUY 06-18-07 06:58 PM

on my gs i was able to use the original pipe. but an ideal is to weld the peatcock from the original pipe to the new pipe.

rotaxrave 06-18-07 11:06 PM

get a presilencer in your strait pipes. It will make a huge differrence

firstgen689 06-21-07 07:46 PM

is sound or performance

kgray 06-21-07 09:41 PM

sound. i had the same 2.5" setup with one 6" round magnaflow and i got another muffler the next day! It made it hard to hear yourself think above 3k. Look into a borla presilencer.

firstgen689 06-22-07 11:16 PM

mine is kinda flat about the size of the cat

firstgen689 06-22-07 11:17 PM

does it sound ricy or muscly (if those are words) \

im still having a hard time to get someone to do it either they dont have equipment or the wont eleminate the cats cause it is illegal the say( only if caught)

kgray 06-22-07 11:30 PM

it sounds rotary. Not too much like it. There is a RX-3 with a 13BT downpipe only here at the drag strip and it sounds nothing like any other (piston) car. Borla seems to be the best sounding, yet *some* have tried flowmaster with mixed opinions, most of them don't like. There was someone recently who had a flowmaster in and liked it, maybe you could ask for a sound clip?
You have to have a cat in ks? In mo, it's no problem and i'm emissions exempt

firstgen689 06-23-07 11:42 PM

well they inspection guy didn't even check anything on the car but the vin. but i think i found someone

if al else fails i some duck tape pipe claps and bubble gum and fix her right up

aussiesmg 06-24-07 02:21 AM

PM sent

QuiescentWonder 06-24-07 05:44 PM

Let me start this by saying that I know practically nothing about exhaust. I didn't see any exhaust specific section in the FAQ, if there is a good page for information on exhaust please direct me towards it.

Does anyone else have any experience with exhaust? What brand mufflers are quieter? Do presilencers restrict air flow? I looked and Borla doesn't have exhaust specifically for a 1985 RX-7 GSL and directed me to their "Universal" section. Can I buy the manifold, presilencer, pipes, and muffler all in one big package? Is Monza any good?

firstgen689 06-24-07 06:00 PM

well magnaflow is what im putting on and everyone that has it loves it

QuiescentWonder 06-24-07 09:40 PM

What is that? Catback exhaust, muffler? or can you also get manifolds from Magnaflow? How much of a difference would there be in using a catback or putting headers on there and eliminating the catalytic converter all together? I live in Florida, there are no emissions tests, I have no idea if eliminating the cat is illegal or not here.

Can I install headers, a high-flow cat, and different muffler? Or is it best to just eliminate the cat all togheter if I install headers?

Once again, I really have no idea when it comes to exhaust, or too much about cars in general, I'm a PC guy.


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