i have a 91 n/a that i just bought and its 100% factory with 120k but runs great....but she has a 05 shinka rx8 stock. when i had my turbo II i would kill her and it only had the full rb exaust. i could go a few different ways and i have been researching but i need to know how they relate to beating a rx8 and might as well add a rb exaust & intake on the 8 b/c she might get them one day. i dont mind spending some $$$ but i would like to know how much and what to expect out of it.

 

theres a few way to go here..on the 91 n/a

1. pin the actuators open.
2. put a full rb exhaust.
3. put a hks intake.
4. get a s-afc neo for tuning.

then you should be just as fast..!! rx8's arent that fast. i have a 87 n/a and ive out run about two of them..when i did canyon runs that is..

:AA:

 

Hmmm, I can beat RX-8's. Do what I have done....

Edit: Doh! You have S5.

Get an AFC Neo, and an RB exhaust. Make sure your VDI and Aux ports are opening, and then you should be able to keep up, if not beat her.

You don't want to tie the Aux and VDI open. They don't impede HP. They only increase torque at lower RPM.

I have tried keeping the VDI and AUX tied open, and it just leads to insane lack of torque down low.

I would probably go with a 20B.... that'll beat her.... ahha...

So, working VDI, aux, RB exhaust. Oh, and make sure your front double throttle plates are open when the car is warm.... Mine were staying closed, because they were stuck. Even with the car and normal operating temp, they were staying closed. This led to me being pretty slow. It still felt quick, but not as quick as when I fixed them..... took them out for me... others say just fix them.

She might have a little more HP, but is is a little heavier car I think.

GL

 

i cant find the tb mod and i have searched? can someone point me in the right direction? and thanks for all the info so far.

 

You do realize that the actuators are there for a reason? The only reason I could see to wire them open is A. You bought the wrong exhaust, or B. you are running a turbo and are too lazy to switch to a turbo manifold.

The HKS intake is a hot-air intake, and will cause you to LOSE power.

SAFC's...wow. Man, sorry, but the only thing on your list that a person should buy is the RB exhaust. Everything else on there is a "I'm too poor/stupid to buy quality products"

 

TB mod I did, was a combination of:

http://fc3spro.com/TECH/HOWTO/TBM/tbm.html

Even though that is for the turbo model, it still follows a little bit of the N/A....

Also check out:

http://www.rotaryresurrection.com/2n...s_removal.html

Down the page a bit, you will see where he mods the TB a little I believe 37+ on the numbers.

There is also the S5 emissions removal, that might have an S5 TB mod:
http://www.rotaryresurrection.com/2n...s_removal.html

Though, the TB mod doesn't add power. It just cleans the TB up a little. For me, because my front double throttle plates were stuck, it added a lot of HP.

"Emissions" removal doesn't add power, it just makes the engine look a little cleaner, and make it so you have to hold the gas down for a bit when you start the car.

 

Hmmm, I agree with the hot-air intake, you shouldn't put one in.

Wiring the actuators open just kills torque and adds nothing to HP.

SAFC though, now that isn't just for poor/stupid people. We don't all have 1.2k to drop on an EMS. And if we want to tune down the insanely rich condition, an AFC will work.

If I had the money to buy a nice EMS I would, but there is so much you can buy for 1.2k.

Most kids who are too poor/stupid, as you say, usually go for the ebay awesome plug in resistor. They don't go and spend $300 on an AFC. Also, this is an N/A car. If he went Turbo, then some type of an EMS might be considered, but if you are trying to lean out an N/A, AFC works.

Eh, to each their own though. If money isn't a concern, go buy a nice EMS. Spend a lot of money and have a professional tune it. Pair that with an nice RB exhaust and a very aggressive street port, or bridge port, and you should be able to beat her.

 

w/o a turbo swap your wasting your money on useless power. all that money spent towards making your n/a quicker is money wasted towards a faster car.

 

There are other options as far as ECU's go. I would rather get an safc2 than a Neo only because of price, but really both of these are band-aids to fix it.

I know it gets old to hear about it, but the Megasquirt is a nice and cheap ECU. It also has a large supprt group and a few dedicated rotary nerds (muythaibxr) that are helping with future development. While right now it is a little primitive compared to other ECU's, the kit is only $200 (though I got the wideband and MS for $400 and another $50 in wiring), and its truly an educational experience. Not only that, but you can try different things with the megasquirt, such as innovative intake manifolds and the like- you also aren't limited with the stock AFM either.

 

I agree with the Megasquirt being another option.

I have read about the Zeal Megasquirt. Am I correct in it being standalone?

A Zeal Megasquirt is something I am considering, but for just a couple hundred more, you could get a Microtech.

I also have read about some people using Greddy e-Manage Ultimate? Which is in the $500-$600 range. (I think).

Anywho, someway of controlling fuel will help. Partly because the RX runs pretty rich. But you also want some way of figuring out what to tune it to. I am probably going to try and get a wideband O2 sensor that is stuck in the tail pipe. And then tune from there.

I have hear some people say they prefer EGT gauges to tune A/F. or a comination of wideband O2 w/ EGT.


Also, I just noticed in my sig that I have Walbro 255 and external FPR. You don't need these. Stock fuel pump is more then enough. I just had the walbro laying around so i used it.

Stick with the stock pump setup.
GL

 

Yep, the Megasquirt is a standalone, and can actually control a few things your run-of-the-mill EMS cannot.




Oh and, if you need an A/F gauge, I have an Innovate for sale. PM me for more details. Sorry but, the wideband o2 has already sold.




EGT gauges aren't as accurate on rotary engines, or so I have been told.

 

IMO
I voted for the turbo swap, rx7 have very little to work with 1.3 and the tech is very dated.

If you do an NA build you might run with your wife but the lady in the turbo volvo will fly past both of you (not making a sound). It looks silly getting passed buy a family sedan thats not strugguling to make the power (with 4 occupants) and not nearly as loud.

I've been in this since rx7's and supras were king of the road (early to mid 90's).
Back when my FULLY BUILT n/a gsl-se would kill turbo civics, sers, and integras (spoon civics too) mustangs, m3's, corvettes....
Now days technology has surpassed the 7, lets put it like this even with a turbo it still hard for a 7 to compete.

DONT GET ME WRONG!!!! I still have my TII but I know that the king of the road days for the 7 are over. (neons with 350 go to 500 easy and dont break, g37 coming with 330hp the list goes on...)

go turbo (it will keep you up with the modern vehicles at least)

AND you will CREAM the wife!!!

 

put a banana in the rx8's tail pipe and get a 4.3 gear

 

I have an 88 with a high flow exhaust and S5 Intake manifold, I keep up with rx8s all day long.

 

thanks for the help guys i appricate all the input!!

 

I forget to mention mine ia s Non Turbo. There was a Rx8 with exhaust and maybe intake but I don't know, near me, Him and I did a little run for the hell of it, he couldn't catch up, stayed about 5 car lengths behind me.

 

Add a nitours kit and dont tell her.

She might laugh when your engine blows up though...

 

13BT swap... if you got the money, 13B-RE swap

 

If you have the money... 20b FTW! Seriously though... Get the 13b-t stock swap or I/H/E and engine management will work wonders towards getting up to RX8 level.

 

you could buy a TII for half the cost of a turbo swap and i wish i had

 

She's just a better driver than you. thats all

 

actualy i am a good driver and she is pretty good but i taught her how to drive a manual and didnt complete her training so she cant speed shift, rpm match.... and doesnt know how so the car would be alot more difficult to beat if she could shift alittle faster....

 

Eh, without some serious driver error, I really can't imagine that. The RX8 isn't THAT slow..I have no problem staying with GT's and G35's, I can't imagine a very lightly modded NA FC being any problem at all, especially 5 car lengths..

 

TII swap. i smash on rx8 when my car is running good atleast lol

 

The cooler air does wonders for my engine. N/As are not slow if you mod them right. Going against 2 rx8s and both not passing me, tells me that, they are not as fast as they are said to be. We also have a better engine for exhaust flow. Since we have the PP exhaust ports and they have side ports, we have a greater change of getting more exhaust out then they do, leaving more room for air.