Two quick questions...

[luckythedonkey]

Hi Guys,

Regarding an SP20 - I've got two quick ones.

1. Are those round metal air flow things made to give more performance/better mileage a gimmick? I think they go in the piping to your air filter box. Link below incase no one understands my half arsed description:

http://cgi.ebay.com/ebaymotors/SAVE-...34947902QQrdZ1

2. Where do you guys get your stubby roof antenna for the SP20?


Thanks

[MitchEG]

1. Gimmick! see http://forum.mazda6tech.com/viewtopic.php?t=4028 (2nd Post)

2. No idea, but i wish i could put a stubby antenna on my car.

[skippy]

ohh a Velocity Tuner! looks like a turbonator to me,
yeah sounded great to me to, but I suggest you wait until someone you know trys it first, hmmmm

actually nah they are a great idea do it do it let me know how it goes,

[luckythedonkey]

Cool thanks for the feedback guys!

[twilightprotege]

1. stay away from cheap gymics. if it sounds too good to be true it usually is.

all those things do is slow down the air, so less air gets to the engine and therefore you use less fuel....at the obvious expense of throttle response and power.

[MitchEG]

yah, and like the link says, what happens to the swirling air when it hits the throttle butterfly and then goes into the plenum beofre being divided into four...would it still be swirling properly....me think not.

[Rupewrecht]

Try eBay US for the stubby antennas - there seems to be a plethora of them in a multitude of colors

http://search.ebay.com.au/antenna-ma...sPageNameZWD2S

http://search.ebay.com.au/search/sea...rclo=&saprchi=

[EVOlution]

I do private product testing and evaluations and I was given one of those for evaluation by a company looking to sell here on the australian market - the product failed basically. I was presented with 3 units from one manufacturer of measured uniform construction.
I tested it on my current car ('92 Astina import 1.8L DOHC) and found that it actually reduced power and efficiency if placed before the AFM and did nothing placing it after the AFM but before the throttle body.
I also tested it on a Ford laser (EFI), Toyota Corolla (carby), Toyota Corolla (EFI), Mitsubishi Mirage 1.5L (carby) and a 2000 Mitsubishi Lancer (EFI) and all gave the same results - no improvement or some reduction in power and driveability. In cases where the vehicle has learning or semi-learning computer controlled engine management the vehicle could compensate over time for deficiencies of the changed system but generally an overall reduction of performance was recorded in all vehicles of either carburettor or EFI type while carburetted engines suffered the most negatively all the time even with workshop tuning performed after fitment of the device.
Testing was carried out over a 3 month period for each vehicle.

[skippy]

any ?upgrade? gotta think why didn't mazda do it themselves?

[AstinaBoiV6]

that thing well the 1st thing is the same as the k&n typhoon filter or other performance filters.. its designed to make the air circulate sorta like a tornado inside the airflow pipe.. its alot better than straight flow... look at K&n or apexi websites at their filters

[EVOlution]

But just turbulating the air doesn't make more air or increase the density. More air or higher density is required to make more power. Those turbulation devices to nothing for improving power or fuel economy. The only way to improve fuel economy is improve engine efficiency or reduce fuel intake per consistent output and the only way to improve or add power is to reduce vehicle mass or actually make more power and for that you need more input to make more output - turbo, supercharging or some other means of forced induction are required.
Don't forget that those turbulation devices are introducing a diversion obstruction in the otherwise straight airflow path - the air still has to hit those angled fins/blades and divert to another indirect path before reverting to the original path or direction of flow, even the corkscrew designs of slightly better efficiency give no more than a few centimeteres of sprial flow after the device itself so the "highly efficient spiral/turbulent airflow" only lasts for no more than a few centimeters anyway. One actual proven way to improve normally aspirated induction is to use runners or intake paths that have a smaller outlet compared to the inlet, this way the large air mass entering the larger opening is forced to not only compress but also increase in velocity to exit the smaller outlet of the system. Why do you think they used tapered intake "trumpets" and called them velocity tubes on the early F1 cars and still do on the V8 supercars of today. You want a real improvement go all out and get quad throttles with ram tube intakes or even just make up a ram type intake for your current mono throttle designed car..... I might make up a large mono-ram velocity intake for my 1.8 and see how it goes..... might even invent my own new "gimick" product hahaha

[twilightprotege]

k&n typhoon is JUST THE NAME of the product.

[chicaboo]

The Hiclone, Turbonator and Hurricane apparently only work on direct downdraft carbie fed intakes, otherwise there is no point. But the idea is not so much improved air density, it's to disperse the fuel atoms more freely or some **** by swirling the air around...

A sometime member on here has a Charade and swears by the Fitch Fuel Canister, which uses a catylist which when the fuel passes through atomises it much better. I would try them except for the herendous price!

And then you have the rings (magnets) which you put around the injector to heat/bubble up the fuel to make it atomise better. So you have hot fuel now? When did that become good? Anyhow, maybe hot fuel and cold air is what is need these days???

Argh, for the price of all those things a noisier free flowing exhaust gives the most amazing improvement in fuel consumption you will ever experience!

Gav.

[chipa]

Originally Posted by chicaboo

Argh, for the price of all those things a noisier free flowing exhaust gives the most amazing improvement in fuel consumption you will ever experience!

Gav.

agreed!

[Astro Boy]

Originally Posted by chicaboo

A sometime member on here has a Charade and swears by the Fitch Fuel

I do???

Ok, of the 8 cars (1 van, 3 race cars, 3 cars and a brand new ute) i've owned not one has had one... i've never driven a car with one, and nor do i intend on spending $250 on one any time soon??????

i do recall saying something about them working in theory cause tin is next to lead in the table, but i certainly DO NOT recall swearing by it????

Like you say, i would be willing to give it a go, bar the price, because i do beleive the concept has alot of merit.... now as for the 'Brock Polariser!'

[chicaboo]

Do a search dude, you went on how you need the added octaine at 9000rpm and stuff. It was the Fitch or the other thing, you even mentioned the name of the Brizzie contact...

EDIT: Oh, would you look at that, it was the other one, SILLY ME!
http://www.astinagt.com/forums/showt...ght=fitch+fuel

Originally Posted by BadmemoryBoy

I've got one on the civic.. couldn't be happier

When you run 11:1 compression and 9200rpm you want all the octance you can get and it has stopped my high rpm pinging that i sometimes got if i didn't add my octane booster properly, so its good to have a backup

I got a good deal too, i got a larger canister than would other wise be expected for my size engine (for obvious reasons), at the lower cost...

[Astro Boy]

Gee! I did get pretty excited about it didn't I! Yeah, i've still go the marketting manager card on my garade window sill...

I met the guy when i was working at the light commercial show last year, he gave me one to try provided i gave it back by the time the show finished...

In the end, i never actually drove the car, but did fit it up, and advanced the timing WAY past where it had been able to go before... so in theory under no load it works... anyways, i gave it back to him, decided that running 98 octane fuel, and not trying to find every last killowatt was the safest option...

Those posts were written the week of the show, when yes, i was pretty happy with the thing given the timing i pulled... that was like 18 months ago...

Yeah, if i ever get a spare $200 i'd be happy to buy it...

So in the end i guess i do swear by it!