FujiRacing IRTB Miata vs S2000 ITB Autocross

Gainesville FL Feb.'07. Our IRTB Miata is on wornout(Last Time Use)autox tires and the S2000 was on performance street tires. The last turn shows the IRTB (130 WHP)Miata hitting 51 MPH in such a short distance compared to the S2K's 43 MPH. In fairness the Miata is proven in SCCA Natl. competition as one of the fastest autox Miata's in the country.

Category:

Autos & Vehicles

Tags:

• FujiRacing
• ITB
• IRTB
• S2000
• Miata
• Autocross
• Motor
• Sport

[4ThrottleTuning]

The 4.3 second 0-60 MPH 184 whp. is with the tires spinning, that's why N/A is much superior than forced induction on a lightweight car. Forced Induction is too much power. Turbo does have an advantage on a long long straight though.

2" exhaust is not too small since in Japan they even use a smaller dia.

[4ThrottleTuning]

The S2000 motor swap would be good on big HP track. The Miata is so light that you cannot put the power down & that's why we went with ITB's & not a Turbo. With ITB's we have a flat torque curve with our peak HP @ 8200 RPM's.Our Miata now has 184 WHP (Pump Gas 93 Oct.) & 0-60 is 4.3 sec. 9000 RPM Redline.

[bebop00]

I've got a question, what does the car have besides ITB's and suspension? Does it have stock internals?

[4ThrottleTuning]

Stock internals on this video. The car now has 171 RWHP & within 2 weeks we'll run it down the 1/4 mile hoping for a 12.5 sec. pass.

[bebop00]

Also what suspension and exhaust does he have on there? It looks and sounds bad ass! What front lip? Sorry for all the questions haha

[4ThrottleTuning]

Koni Race shocks & Swift Springs. Custom FujiRacing 2" diameter catback. The 2" is not a mistake. We even use it on our built 171 RWHP Miata. Response is what we are always after and it worked.

[wildcards2k]

Just found this...I was the S2000 driver. Jimmy, you failed to mentioned that I was on street tires with a bone stock suspension...your car is on R-comps and fully race prepped.

Not a fair comparison and you know it. Next time show up on street tires and prepare to get your ass handed to you.

[MichaelBrown86]

EVERY miata looks very confident in the turns.

[Baskentli]

2'' dia exhaust is more than enough for a 1.8 liter N/A car. If you make it bigger, you'll just lose torque and response.

[nekoreaper]

Wow the announcer sure has a boner for all things honda. Wont shut up about it even when its being thrashed by a 15 year old car. That fire? Sure as hell not a honda.\

... give me a break

[JD0x0]

@4ThrottleTuning +1 small exhaust can often yeild more power than large bore exhaust if done correctly. kids with 3'' piping on 1.8L just lose torque and sound like crap. Theres a guy who actually "detunes" bikes  by putting smaller exhausts on them, and while they achieve less peak power, they gain so much low end power and keep it through the RPM range that the bike ends up being faster anyway

[blockheadface]

@madzraymund This car is running a 1.8L engine from a '95.

[JgHaverty]

@4ThrottleTuning

Not to be a dick, but I have no problems with my 383whp miata.... Yours is pretty swift, especially given the horsepower, but with the right suspension and tires, tire spin isnt that ridiculous. The only way I spin out is if I slam the gas and drop it in first.

all that aside, nice run! :)

[laserandrew]

@vanzobee

lol, nice one. and that's just retail price BY YEAR. 10 years of development difference anyone?

[vanzobee]

@wildcards2k and u failed to mention that the miata is almost 10k cheaper in retail price compare to the S2000, now quit crying fool

[wildcards2k]

@SirDouglasArthur89 no crying here, just stating the variables that were left out of the description. s2k = street tires, stock suspension, daily driver, no other mods other than itbs and ems. Miata = fully race prepped, stripped, interior, slicks, racing suspension, etc etc etc.

[romanosalvatore]

WHat kind of wheels are on the MIata? And what kind of ITB are you using? Thanks!