shaunv74

Racing beat has a perfectly good dyno sheet on the street flash on their website.

look here: www.racingbeat.com

For the Nitrous question above: I'm not sure where you're getting your connection that the discussion on 87 octane gas is related to Nitrous? My advice is do what Charles R. recommends and nothing else. If you're going to put something like nitrous into your engine you certainly shouldn't reduce the octane of the gas you're putting in. Why would you want to risk what may happen over what may or may not be a few HP from the gasoline?

Astral

It seems to me that if you were to get the RB flash, that you should run 91 or whatever it is you were running. Maybe other RB race and street flash owners can chime in as to whether the octane makes a difference in performance. It seems to me that it would make little difference.

peterisurhero

i thought people here were saying that with the racing beat flash, they are getting better results with 87 octane. but nitrous requires the highest grade possible in octane.

pdxhak

iTrader: (2)

Did you follow up with them about your car dying three times?! That does not seem normal.

Keef

well it's happened before so it doesn't really bother me...

But I'm gonna give this thing an update... So far my biggest obvious gain is in 3rd gear... My 8 jumps ahead a car spot or two from 70-90... Also the flash doesn't seem too mind if I hit 9500, it doesn't seem too have an engine cut off at all really, I've been reaching 9700 pretty easy, with no problems...

The blinking security light doesn't really bother me... hehe, I find it almost kind of funny...

One of the biggest and most obvious gains I'm getting from this is in the 3000-5000 range... I can really feel a lot more torque, which makes it extremely comfortable for daily driving...

My next modification is gonna be a resonator though, the sound is slowly driving me insane...

Edit: Before when I had the mazsport or even stock ecu/coolant setup. When I turned off the car the fans would stay on for at least always 30 seconds, sometimes it would last for 5 minutes. Now the coolant fans don't turn on when I turn the car off, it's been a day but I'm just paying attention

Astral

The stock tach is off. When you hit 9700rpm (wherever the fuel cut hits), you're actually hitting 9300 RPMs. When you hit fuel cut on a stock RX-8, the tach shows about 9300RPM, but you are really hitting 9000 rpm.

swoope

iTrader: (5)

it is the drive it like you stole it reminder, nice of rb to include that option for free....

amazing that more people dont get the good 87 works well if the ecu is allowed to learn it...

beers

TeamRX8

iTrader: (25)

nobody making the big NA RWHP numbers is doing it on 87 octane, get a clue people ...

swoope

iTrader: (5)

dyno #s no.

that would be 89. but that is in a different land... the place that has no 94.

beers

staticlag

Yes.

The reason why you should run the highest octane of gas available with nitrous is because you are changing the operating environment the computers ECU is used to. By adding nitrous oxide you are increasing the oxygen concentration in your air mixture.

Your car's computer assumes you are running on earth with a standard oxygen/nitrogen air mixture. By assuming this it can calculate how much oxygen is available through three variables 1) air flow 2) temperature 3) barometric pressure.

From these it calculates how much fuel is necessary to react with the oxygen available.

basically, by changing the oxygen content in the air mixture , your car can assume nothing. And you are hoping the standalone nitrous system doesnt mess up its mixing ratios.

So, the high octane is just a safety net, because in essence, you are just throwing a random amount of extra un-accounted-for variables into en engine set to run in a specific way.

You could tune an engine to run on nitrous using 87 octane just fine, but that would require an understaning of science and the costs assicated with tuning to a different lambda value..

But most people that get nitrous just want cheap, easy, plug and play.

Easier to have a huge safety net than to learn to tightrope walk

staticlag

Uh yeah, and I dynoed 203 hp on a mustang with 87 octane, 10w40 oil. And half the mods you had.

Keef

my 8 sounds completely different... And I can definitely feel an increase throughout the whole power band beginning at 3000 RPM's. It's been a day and my Racing Beat Race Flash sounds like a success story... I'd definitely say that if somebody planned too not be running with a cat, they should not waste there time and get it tuned. The exhaust itself doesn't seem too be wasting gas with excessive popping sounds, throttle response seems too have increased too (above 3000), the general sound of my exhaust seems too be one even tone, compared too before where I would have excessive A/F ratio changes throughout the power band... The biggest difference I've noticed in noise would be in the 4000 RPM point where instead of getting louder and raspier it just seems too flow evenly and sound the same as the rest of the power band (which I swear has deepened in tone). Other than that, if you rev it continuously the engine seems too just simply dump and dump gas/oil. Even after reeving and chilling in idle it still dumps what seems too be more gas/oil than it did when it was stock.

Definitely the best investment I've done for my 8

staticlag

Oh yes!

I am liking this dyno.

87 octane "regular" gas. Royal Purple 5w20 with 3K miles on it. PureOne oil filter w/ 3K. Stock Plugs with <1300 miles. Cleaned REVi with ~600 miles on it since cleaning. Mods are in my vB garage link in my sig.

TeamRX8

iTrader: (25)

Half the mods? You mean like me being emissions legal and you not?

Nearly all of my mods are weight removal oriented rather than performance oriented, which isn't going to show on a dyno. We look fairly even to me which IMO is generous considering I have a cat converter and completely OE drivetrain. The difference is most of mine are homemade to achieve the weight goal. In fact, if you believe half the posts on this forum most of my mods should be losing power

I can only assume you're referring to my dyno run from over 8 months ago ...

staticlag

negative, I was emissions legal at the time of the 203 hp dyno. Along with no ECU mods or aftermarket wheels.

you had the custom manifold and exhaust, racing beat race flash, enkei rpf1s, speedscorce mega underdrive pulley with no A/C, etc.

Mikeluvs8

nice!!!

Brettus

iTrader: (2)

Great result Staiclag . Do you know if they have done stock 8s on that particular dyno and what nos they get ?

That UD pulley realy helps yes ? (Brettus - AKA pulley fanbois society president )

dmp

I hit 197 w/ just CAI and RB Exhaust.

:D

On 92 Octane.

:D

crimson-rain

what kind of dyno was it? staticlag was on a mustang dyno which normally reads lower than say a dyno jet if I remember correctly. if you put his car on a dyno jet, his 8 might just put down a 215-230whp reading. That's pretty freakn good NA.

Nemesis8

iTrader: (3)

Nice dyno - I'm liking what I see.

zoom44

thats because the RB flash is using the fans sooner and keeping your car cooler so running after you shut it down hasnt been required.

Keef

my engine dying in the mist of driving rarely occurs anymore. Only on the hottest days when I'm bored enough too just push it, I'm pretty sure the intake just takes in too much hot air.

I feel I need too reply too that issue so that people will know that the actual issue of the engine dying goes away within a week.

In reply too Zoom44: When I had Mazsport's cooling modification it did it worse than stock. The coolant fans would be on for sometimes 7-10 minutes, I'd have too turn the car on and off just for it too turn off the fans.

Keef

Has anybody who installed the race flash experienced a more than average usage of engine oil? I mean, I can rev my engine, and see the engine just dumping blue exhaust fumes whenever I need too.

Also I changed my oil at 55,000 miles. Got an oil light at 57,000 so I dropped in quart, but before I could get too 58,000 I got another oil light. A quart within 1,000 miles?! My 8 runs fine, and I haven't experienced any power issues... Just curious if anybody else with this flash has experienced such a large increase in oil consumption?

peterisurhero

i think that is fine.

i dont have the flash and i have to add a quart every 1,000 miles. and then when it hits 3,000 i change all of it.

shaunv74

I'll burn a quart of oil at a track day. Other than that it's roughly every 1000-2000 miles depending on how I drive.