Hey fellers,
tonight im pickin up my 86 rx7 GX, im a new owner of this car and im very excited. Been in love with this car for a while. Anyways my question to you is, what are some cheap but most useful or most effective performance upgrades that arnt gonna put me down the shoot. I wanna just get alittle more power but not burn holes in my pockets.

Thanks guysss

 

Reliability mods:

1, Plugs and wires
2, Air filter
3, Fuel filter
4, Oil and filter
5, Vacuum lines
6, Flush cooling system and replace hoses
7, Replace belts
8, Change transmission and diff fluids
9, Change brake fluid
10, If you have an N/A car, Make sure aux ports are working properly.


Just put the car in tip top shape first. It will need some, if not all these issues addressed. Then go into modifications.

Welcome to the forums.

 

"Some, if not all" No no, just do ALL of them. Safety first...

 

if you want more performance for cheap, get a cone filter and adapter. and go to a muffler shop and have them make you an exhaust

here you can get a full cat back custom made for about 250 with both mufflers included.

if you think you can do it yourself, do the throttle body mod

oh and you can do the s5 intake manifold swap too

 

ok if thats all good what are the first perf mods to do? K&N Filter? spark wires what what?

 

just a cone filter is a nono, either port the front of the stock box or go cold air, that engine bay get so hot I cant touch anything in there

 

These are mods? I thought they were just routine maintenece.

 

how deep are ur pockets?.....that tune up can easily run u about 200US....assuming ur rotors and tires are still good....these are old cars....make them run right first...worry about speed later

 

the throttle body mod is not a good idea unless it's turbo.

more like 250 just for the mufflers... maybe that's just VA or they just think i'm an easy mark.

make sure you've got good compression and worry about whether your car is running like stock before you go and put some fart cannons on it.

buy a haynes manual/download the FSM and get rid of any quirks your car has, as fixing them will definitely boost your performance. there is nothing worse than adding more variables into a problem.

a good compression fully functioning 13b will burn a beater block with fart cans and intake on it any day.

are your aux ports working properly?

 

that's the point

 

i understand, but i havent bene able to find a cold air intake for this car ANYWHERE on the web.

 

But unless that cone filter was isolated there would be a loss of HP?

 

Mariah has a box and there are many alternatives, the most popular is the 92-96 Prelude intake then customizing it to fit your needs.

 

ok so cone filter.. and how do i hide it.. i heard to get a cone filter then drill out holes in the top of the filter box where the "mazda" sign is

 

Er, no.

You replace the entire section with a AFM adapter and a filter. But that will result in a loss of HP.

Read my prior post.

 

ya but i got no mad skills at all, that looks like u hafta cut the pipe or some crap

 

You do. Its not too hard or if you don't want to cut anything (including your body) you can spend the $$ and buy the Mariah box or build your own heatshield/CAI.

 

But didn't you hear him? He doesn't have any mad skills. No way he can cut a pipe in half!

 

do you have to meet emissions?

 

Putting a cone filter is not gonna give you a decrease in hp! I know that the assumtion is hot air going into the intake etc, and that is relatively true. However if you leave the stock induction sending unit bolted to the front, you will still get cooler air at operating speeds.

The only time your car is going to be breathing hot air is at a stop. But the stock air induction works very well with a cone filter. You can and should be capable enough to cut some of the pipe and also to remove the stock air filter housing.

Tons of people do it, and many are lacking ''mad skillz yo''. Its not much of a gain in hp but a much better throttle response, not ot mention a good mean sound when you ''gas it''.

 

91Verty: Yes it will . The intake will suck in HOT air off the engine/radiator. With a intake system you want colder/denser air into your system. Hotter air then the air over a stock airbox will be a decrease in HP. So don't post **** like that because you're wrong. Where does the cold air come from with a cone filter?

Its not so much to gain 3-7 HP or so, but it is so you don't decrease the horsepower.

A totally sealed box with an inlet for cold air OR fenderwell intake is the only solution to gain HP and throttle response.

 

I'd do the tune up first, then the exhaust complete with header if you can and if you can go a little further then swap the rearend for a gtu 4.33:1 gearset. Instant zoom! ~rich

 

he said to leave the cold air snorkel, if you don't believe it works i'll put a thermocouple in there at the cone filter and run the car and tell you what it reads. i'm interested to see myself anyways. even without the snorkel, if the car is moving at all, there is alot of air being displaced and replaced with ambient temp air. it's not a sealed box.

nevertheless, on a 90 deg day at low speeds i'd say you're 100% right, jager.

 

Already been done dudes... The filter sitting right next to the radiator causes INCOMING air to be HEATED UP quickly. Simple thermodynamics tells us that there CANNOT BE a big difference in ambient air temperature. If you built a box around the cone filter so the air never mingled with the other air, THEN it would be possible. This has already been dyno tested and proven on several occasions. Keep your unsolicited advice to yourselves.

First mod will be a CAI - done properly, it yields minimal gain, but in the long run is very useful. A free-flowing exhaust (mod number two) is also inherently useful in the long run, and has been known to shave off >1 seconds in a 1/4 mile. Racing Beat makes a good header-back system for around 800, and that's a good idea unless you have specific plans. After that, look in the archives for the TB mod and how to port your TB. If you don't have emissions, follow the guide on how to take off your smog pump and rats nest (also in the archives). After that, feel free to look around in the "beefy NA" archive thread, etc, but at that point, your best bet is probably a fuel computer like an S-AFC. Make sure you browse this forum PLENTY and learn a LOT about your car before you do anything like this though.

 

"Keep your unsolicited advice to yourselves."

unsolicited advice? wtf... first of all he asked for advice, so by the definition of the word, my advice was "solicited"... get off me

and besides does any of that sound like BS to you?

all i'm saying is i personally don't think an unsealed cone filter with access to semi-fresh air is the devil incarnate, when i didn't even recommend it in the first place.