Trekk

It's already been given both made up and correct.

mysql101

Stock greddy kit with no other changes to the car besides tuning and a boost controller can get you close to 300 whp.

Brettus

iTrader: (2)

I'll just throw my dick into the measuring party as well .
With my NA mods I find that I can match s2000s and almost keep up with the latest STIs on the track - maybe 3 car lengths behind to about 100 mph .
Once we get to a corner though - the tables turn

shaunv74

It seems like a definite common thread for taking full advantage of NA mods is getting a piggyback EMS such as EMU or int-x (or Power Mod if you're in NZ) and having it dyno tuned by a good rotary shop.

Trekk

I was talking out of the box stock, I knew I should of added that cause someone would came along and post "but it can get more".
I'll nit pick too, I wouldn't think it would be wise to be pumping 10ish psi into your motor to hit 300whp w/o a BOV. That is, unless you like to destroy turbos.



Your first $$$ should go to a mid pipe.

rotorocks

Oh... I wasn't trying to be harsh harsh, I just spoke the truth.

He said "And U Can Ask All The Turbo 8's In South Florida What Has Happened To Them"
So it's like I answered. Not a single word of fiction I spoke...

Charles, you were at the beginning of it all for me The thing with you, is that you never mislead anyone, nor tried to present something for what it isn't.

Even if I had a rocket engine in my car, I'd let you win by just a fraction. Just because some fights are better left unfought.
That and you'll have one helluva engine, once you get it all sorted out, so I'll just chicken out of this one (for now)

By the way i was thinking of taking a trip to sevenstock this year with my kid, so I can meet you all in person. But I'll ask about it in more details on your Rebuilding Renesys Thread, so i don't take this one off topic, if you don't mind

See, all the dick measuring aside, but the message is being heard.
People are looking in the proper direction.

There is no problem there.
I didn't attack the guy. I replied to his comments with correction and some sarcasm.
Everyone needs some entertainment. You are not going to say that you did not enjoy reading this, probably thinking "Fu** yea!!! Take that ya bastard!!!", but then turn out all protective. The guy is not a little boy. If he could install the Nitrous system, and managed to smoke a couple of turboed 8's he can answer for himself I am sure.
If it came out sounding a bit harsh, I apologise. Ho hard feelings.

I also never once anywhere said i know more than someone else. Do you ever see me jumping into any discussions that involve mathematical equations, or calculating voltages or the amount of flow across a given area, or whatever else that involves mathematics? Heck no. That stuff is beyond me, though i understand it in concept. So I just sit and watch cause I suck at coounting. But I do know a thing or two here and there thanks to this forums, as well as people who didn't bullshit, or pose as an uthority on a thing, that they know they are not.

I just believe that there is a resonsibility that comes with making such assertations. It involves not only egos, but money that we put down for all the mods, hard earned cash, and sometimes much more, so we should all be selective of what we say or reccomend.
ANd if we do there has got to be a reasonable backing to it. Dont you guys agree?

Just my

rotorocks

No man, You can't **** me off.
It is not in your nature to do something like that.
I get pissed only when someone says something completely rude or uncalled for. And even then I try to contain myself a little before i go

rotorocks

It is. People seem to go over and over it again and again.

I am glad I tend to be skeptical about the NA mods,(that, and cheap too) so I never ended up buying any of it.
Only later I learned why, and what a right decision I have made.

rotorocks

Nothing. Except for wide tires in the back and mods necessary with having a turbo:
Gutted cat,
Boost,
AF,
EGT gauge.
TB bypass mod and the venting mod that created such a controversy, but is beginning to find it's way into our cars

Keef

okay, see I did all those modifications within 3 months, and saved my ECU tuning for last. If I could do it again though, I would have tuned the ECU first, then gone in the order you've listed.

Flywheel was the biggest change, but tuning seemed too bring out the higher RPM's so that the engine would have an extra kick of "zoom-zoom" at those higher RPM's. Considering that Racing Beat does it for 300 bucks, it is a lot cheaper of a modification than buying/changing out your flywheel.

Before tuning I would inch forward vs. a stock Rx 8. Now after tuning I walk past em... At a rolling start of 4,000 RPM in second gear, my 8 would gain at least a car length by the end of 2nd gear. Also, the faster we seemed too go, the harder my 8 would accelerate vs. a stock 8.

I would also suggest too leave changing your intake for last. If the higher RPM's are all ready too rich at stock, than adding more air won't do a thing compared too just leaning out the mixture. Lean out the mixture first, than see if more air creates any noticeable difference. Another main reason I suggest too leave the intake stock is after market intakes only seem too work at high speeds (where air can force itself into the engine bay). Other than that, I know my intake eats up that hot air that my engine creates, which really makes me extra slow on an all ready hot day...

rotorocks

No.
First and foremost you make modifications to your I/E, only then you tune to reach the target AF, and not the other way around.
Changes to airflow will throw off your AF ratios. If you lean it out, and then put more air into it, it may become too lean.

Keef

from my experience with changing the intake, under drive pulley, and flywheel at once. My super cat melted within a week because my 8 decided too run too rich. That was with the stock PCM... I still wonder too this day "what if" I got the Racing Beat reflash first, "what if" my super cat lasted longer.

And your quote proves my point. If the Renesis engine runs too rich at the 5,000 + RPM range than leaning it out would be the first priority. Changing the intake after the tune too hopefully pick up some more air too maybe richen the mixture a little would yield a larger increase in power. Not vice versa.

rotorocks

First of all, your cat wont melt because it runs too rich.
The RX8 runs rich from the factory for that specific purpose, to save the cat from burning too soon and pass the tests for the Cat longevity imposed by the govmt.

I suspect you are confused with the whole tuning scenario, so I'll try to explain the basics of it, but strongly recommend that you read as much info on tunning as possible before even attempting it.
This is an excellent resource to start: https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/so-you-wanna-tuner-100333/

The point of tuning is to achieve an optimal AF mixture, so that when it ignites inside your chamber, as much fuel is burned as possible, at a rate of burn that is as stable as possibly can be achieved without actually causing your mixture to explode inside your chamber. This allows to release as much energy as possibly can be released without loosing control and causing damage.

Too Lean will not give you more power. It will only make you run hot, which may possibly cause overheating, followed by hot spots and premature/uncontrolled ignition of the mixture inside the chamber.
Note I mentioned uncontrolled, because your mixture can self ignite from coming in contact with an excessively hot surface of the rotor or housing while still being compressed. This will produce an explosion. (AKA Detonation, Ping, Knock...).

Similar effect may occur when the ignition timing is too aggressive, but that is not the case here, so I'll leave it alone.

In vacuum operation, while running too lean, may not detonate as there is just not enough fuel for that, but instead produce such high burning temperatures, that it will cause the surfaces of your rotors/housings to melt, which I take it wont be too good either.


Too rich and your fuel is not getting burned properly, as there is not enough oxygen for it to burn. The excess fuel will begin to evaporate at excessive rates, lowering the overall temperature of the "fire" and literally extinguishing itself.
It will also cause carbon deposits to build up faster, foul your plugs etc...


Now back to the importance of tuning when I/E are in place:

Having all your intake and exhaust in order, and then tuning insures that once you set your AF to optimum, it will stay that way. You do not want it leaner, nor richer at any given point. Changes to the engine airflow, will cause the AF ratios to shift, and you will run a risk of either loosing power, or engine damage.

I hope I am making myself clear.

rotorocks

yes, with reflash it won't make any diff, as pcm will readjust itself to meet the programmed AF.

This hole thing is with reference to an external unit and individuals not closely familiar with the process. those who would most likely go to a shop to get it tuned, and later won't make necessary adjustments.

Razz1

How come no one mentions the compound effect?

You must do intake and exhaust!

They compliment each other.

Check out the So. Cal Dyn thread.

23 dyno's in one day!

I Dyno'd last on a hot engine. Got there just in time after driving 35 miles.

NA don't work???? How come I have 198.6RWP?

Then we re-tested it 4 more times and it dropped to 198 no less.

Mods below

Daemos

^^
Jeeze that's alot of dynos in one day I'll have to read through that thread when I have the time.

The only issue I have with the exhausts is, all of them are too loud for my liking I like the Mazdaspeed v1 but I don't know anywhere you can buy it anymore.

ryan031581

The Racing Beat is too loud for your liking? Now I don't have one, but from what I have read, and heard on sound clips, it is very subtle. The extra weight may cause some stress. I have been undecided on what exhaust to get for a year now, lol. I may just get shocks and springs, and don't do exhaust. But anyway, I think Racing Beat is the way to go if you do not want anything loud.

pdxhak

iTrader: (2)

teamrx8 has hit 221whp NA on a mustang dyno

https://www.rx8club.com/showpost.php...&postcount=229

Razz1

True Team RX8 has more. He also has more mods too!



That's true Ray but generally speaking you should do both intake abnd exhaust.

And I don't think you can challenge ah RAM Duct only for a mod on the intake side.

Daemos

It's loud...too loud...esp when it's not the cat back that's the restriction it's the midpipe.

That + midpipe is loud.

I've heard the mazdaspeed v2 with a gutted cat, and that's MUCH too loud for daily driving.

I like the Mazdaspeed v1