i would like to know about some ways to make a few more horses i have a small streetport and i am going to put an intake on it. then probably convert to electric fans. i have an exhaust but has stock header. what else could i do?

 

The intake and the fan are a good step, spring for some headers too. You could convert to some sort of standalone like haltech or megasquirt, but short of that you could probably get a few more ponies by bumping up the fuel pressure a little. Standalones are expensive and require alot of tuning. A light flywheel and clutch combo will also give you some more usable power and response. What kind of exhaust do you have?

 

A lightweight flywheel will NOT give you more power. It only frees up the power you already have, however you will notice a bit more torque. Also you can get a quicker free rev.

If standalones are out of your budget you might look into rtek 2.0. They are cheaper at 400 for a chipped ECU that you can adjust timing and fuel maps.

To boost fuel pressure you'll need a better fuel pump - ones from Supras have been known to work if not 100 Walboro always does wonders. You could also upgrade your injectors so you're dumping more fuel into the chamber.

Also stripping weight will help with your power to weight ratio, the less weight you have in your car, the faster you'll be able to accelerate.

Haha, of course for the bigger power gains you will need a turbocharger, supercharger, or nitrous oxide. Or any combination thereof.

 

i got a silverline exhaust

 

If you don't have emissions in Detroit, I would look into replacing the main cat with a straight pipe.

 

Don't just go blindly bumping up your fuel pressure. If you're currently running rich it'll only make the problem worse and you'll be wasting gas and making less power. You need a wideband to properly tune it.

 

Burnin streets, I know a light flywheel doesnt give you more power, thats why i said "usable" power.

 

Oh, my bad, guess I was focused on the title of "way to make power". Sorry about that, but rereading your post, it makes sense now. :thumbsup:

 

A light flywheel does increase power, power to the wheels, which is what's important and it's what you'll feel and can actually measure. It's irrelevant if the engine makes 5hp or 5000hp, all that matters is what gets to the wheels.

 

It really does not increase power, just reduces parasitic drag thereby - as 4portgsl says- utilizes more of the existing power.

 

I didn't say that it increased power, I said that it increases power to the wheels, which it does by reducing parasitic losses in the drivetrain. Utilizing more of the existing power is really just saying that more gets to the wheels, meaning your wheel power goes up.

Even if you measured it on an engine dyno, a light flywheel will show a power increase, because the engine will be dynoed with the flywheel on.

 

very interesting, but i will replace the flywheel when im due for a new clutch and my exhaust already is catless my next purchase is going to be an intake i found a whole setup on www.modacar.com for 178 bucks looks sharp

 

are all the air intakes the same for 86-92? or did the 88 and below not have the mass airflow sensor? because the intake im looking to buy says its for 86-88 and im just concerned before i buy it. heres the link:

http://www.modacar.com/products/Mazd...ke+System.html

 

Looks good. S4s do have AFMs but they are not the same plug in as the S5. So to cap things off, if you have a 86-88(S4) get the one you're looking into. If you have a 89-91(S5) find something else unless you want to splice a bunch of wires in your harnest.

 

i got an s5 but im thinking i could still use it by just using the original part where my AFM plugs into in place of the new one the air intake comes with... maybe?

 

I'm pretty sure they don't fit, but I'll look and check it out for you later.

 

When it comes to rotaries, always start with the exhaust when modding for power!!! Here ia a cheap DYI upgrade for a CID, remove the windshield cleaner reservoir in front of the pass tire. enlarge the hole that the filler neck passes through and use the space for a cold air set up coming off the AFM. I rubber mounted my AFM to the strut tower. PM me if you want pics, they are too large to upload. Oh I forgot, I used pipe insulating foam tape for a heat shield(and sealer) I got from home depot. The piping I used was for gas exhaust ducting for water heaters. It was 3" diameter, flexible and sealed. I spend less that 40 bucks if I remember right! Made a very noticeable difference in power. I had a ALM flywheel, and before I had the CID, the car fell on its face over 125ish, after the ram air/cid, I could pull 5th to a tad over 145! (All verified by SN nukeall)

 

FYI a s5 AFM will work for a s4 but you loose the roll over fuel shut off that is part of the s4 AFM. A very good friend did the swap(sn geargrabber), and besides the fact it can be in any mounted in any position, he didnt notice a HP gain and said it wasnt worth it.

 

i would like to see some pics actually it sounds interesting PM me them if you can.

 

10-4

 

I guess if you really were getting a lot colder intake charge it could do that (give you 20mph+) but I'm really not sure about that.

 

I also forgot to mention I had a ram air style cone filter facing forward where the pass side brake duct would be(you could easily see it from the front.. I had a bunch of mods, but when I swapped the flywheel i lost a lot of top end. It revved very quick, but lost torque. I pinned open the 6ports too BTW, and did the CID with a ram air filter, and i was shocked at the difference over the cone on the afm as I bought it. I also heat wrapped the upper rad. hose. After some semi fast freeway runs the intake was cold up till the TB, that was warmer, but still cool to the touch.

 

Please tell me this was a mistake. Unless you were going from lightweight to stock (which is dumb anyways) you wouldn't loose anything!!!

 

inertial energy. It is also the same reason a diesel motors has a flywheels that weigh in the hundreds of pounds. It may take a heavy FW longer time to get going, but once it does it has a ton of inertial energy vs a lighter one that takes alot less energy to spin, but it doesn't hold the same energy as a heavy one at the same RPM.

 

i wont be doing any clutch work for a while but this is good to know