luna_c666

What if I make my aux ports function independent of backpressure- based on RPM- because like I said they aren't functioning now WITH the backpressure...
Then I can do pretty much anything to the exhaust without the need for stock-to-stock replacement parts correct?
My idea was- RB or (reluctantly) Pacesetter, or more enthusiastically (but less likely) corksport header...or maybe get one made in replica fashion
Aux ports electrified then- high-flow cat, 2.5 inch and high flow mufflers- maybe 3" tips, I don't like them any larger anyway, and they may be replica-type mufflers: will this work and what is your opinion on the setup?
Thanks!

TehMonkay

iTrader: (-1)

Do whatever you want to do, if you do duals i'd say split into no larger than 2 or 2.25 inch mufflers though.

Street_Knight

I just went with the corksport header, to a 3 inch straight pipe, to a borla muffler. Sound nice and besides, even with the best exhaust the most power you could add would be 9-10 hp if your lucky. It's a noticeable change and it's nice but still not a huge change.
And back pressure play such a small role in Rx7's, less then people think.

TehMonkay

iTrader: (-1)

?

Header and replacement of stock cats are the biggest gains possible on an NA RX-7.

Street_Knight

No replacement cats....That makes me sad.
Unless you got smog.....then Im still sad

AreExSevenProject

iTrader: (1)

actually no bigger than 2" on duals...

I had a 3" exhaust on my 7 when i got it and i took it off ASAP.
I made my own duals...
its a pain...but find somewhere that can bend the pipe right and it will be a breeze
I paid close to nothing for mine and its nice, sounds nice, and gives great power

13.bREW

i used to have a cheap home made set up on my my old 7 but as soon as i upgraded i really did notice the difference you can go either eay but if your planning to keep your car n/a and moding it from there i would just go w/ a high dollar high quality set up if not then just take it to a muffler shop and have it done for like 200 cash and be done w/ it

AreExSevenProject

iTrader: (1)

Exactly...if you dont have the money to put a nice one on get a well known muffler shop to do all the work for you. Tell them evenrything you want and then drop your car off. When you pick it up it will be done...BAM!

luna_c666

yeah, prolly what I'm gonna do. I am looking into getting an air pump functioning my aux ports and then I can do whatever to my system..My uncle is an electrical engineer, he's looking into getting a time-delay relay to power the air pump for me (instead of the RPM switch) which should be cheaper and better suited to work with the aux ports as long as you guys think a good time to open would be simultaneously with the secondaries?

luna_c666

How about this.. Haven't seen it done, seems much less expensive and more reliable than either electric air-pump or mechanical pump w/ dump valve.. I may have an unneccesary diode in place and my capactitor is in a debateable position (the other option was in parallel with the relay coil, still unsure of the MECHANICS of either setup i.e. which is optimal) but here is MY idea, respect to aaron cake and kevin landers, but if this functions for real the way it does in my head it looks like a reliable system..

MmSadda

iTrader: (2)

+1

and decide what exactly you want to do with the car, first. Supercharging will allow you to use any full n/a exhaust system, whereas turboing will require you to change exhaust components, leading you towards a single pipe exhaust.

Really, if you want to make the most power n/a, buy the RB true dual system if you are going to supercharge or stay unported and n/a. If you are going to do anything more than a streetport, or are planning to turbocharge, you'll want to stick with a single exhaust.

luna_c666

I have decided i am going to 2.5" dual it out as an N/A, for now at least, but that was no longer my question, my question was about the circuitry here

will this work and not spike my computer. Will this operate my aux ports at the proper time? Because as it stands (stock) now they do not work..and I don't want to waste an RPM switch for one function and NOT 'playing it by ear' with a dump valve when I think this setup or something similar will do the job..

luna_c666

or this one...

luna_c666

Bump- anyone- will this work? just got my refund ready to do my exhaust...Thanks!

AreExSevenProject

iTrader: (1)

idk..
i hate electricity!
I let my friend who is really good at it...do everything electrical.

luna_c666

thanks for the reply, maybe you can get your friend to look and ask his opinion, but in the meantime does anyone have any opinions based on electrical knowledge? I'm ready for my setup and I need this problem ironed out first..Thanks!