Savington

iTrader: (31)

Pricing will be on par with what's currently on the market. Component selection won't be.

Our goal from the start has been to design and build a turbo kit that can be bolted onto a track car and driven at 10/10ths without changing a single part. We don't think that privateers and hobbyists should be wasting their time doing R&D on their track toy - that's our job. This community needs a kit that will work flawlessly right out of the box - IMO that kit doesn't exist today.

hustler

iTrader: (6)

Remember ~3 years ago when turbo shops said things like "your manifold/turbine hardware won't stretch", "no one cracks/warps iron manifolds", or "queer me up with your poz load"? Those were sad times.

18psi

iTrader: (76)

moar epic winsous


let me know if you need a prototype dummy

wittyworks

iTrader: (6)

The IWG has worked flawlessly for me, and everyone else that is running an efr according to raffi at full race. Also, Full race claims the plastic piece is pretty fragile, and they have a billet plate that replaces it which has a 1/8 npt hole for either stainless line or a barb. I have the block off plate with a hose barb.

The integrated BOV works flawlessly.

This turbo has lived up to all the hype. I am extremely busy right now, and my car still isn't tuned perfectly, but I am fully spooled (10 psi) before 3000 rpms. Once borg fixes their casting problem and replenishes the market garrett is going to have a serious problem.

Pitlab77

iTrader: (3)

Hum sounds like more reason to wait on turboing the 99

ZX-Tex

iTrader: (15)

My ported IWG worked just fine on my GT2871 making 320 RWHP. No boost creep, really stable.

18psi

iTrader: (76)

My ported IWG did have about 2-3psi worth of creep but only in 4th/5th, which with a built engine and corn, I didn't mind at all

Savington

iTrader: (31)

Here's the backside of the EFR turbine:



That huge cavity below the flapper is a low-pressure zone to promote wastegate flow. The wall around the turbine wheel is also lifted up off the back of the housing by 5-6mm, which creates a low-pressure zone around the entire housing. That low-pressure zone will draw wastegate gases in and blend them with the gases exiting the turbine wheel.

The design of the flapper angle and cavity in the housing mean that the EFR's IWG will outperform a TiAL EWG, and it will decimate any Garrett IWG. If we thought that an EWG would be superior, we'd use one.

This is a Honda K20 test done by Full-Race, with a GT3582R .82a/r single-scroll (purple line) vs. an EFR8374 .83a/r single-scroll, both at 15psi on 91 octane. The GT35R had a TiAL 44mm EWG, the EFR8374 had a 42mm IWG. Check out the boost curve - the TiAL 44mm creeps up top, but the EFR is rock solid all the way to redline. The K20 is notorious for having incredibly high VE at high RPM which causes boost creep, and the EFR's internal gate has no problem keeping it under control.

http://honda-tech.com/showthread.php?t=2889919



I'll post some more detailed photos of the turbo as we go forward. Needless to say, this turbo has an enormous amount of thought put into places that you've never given a second glance to before. Our kits will have that same attention to detail.

99mx5

iTrader: (16)

This is correct, I'm currently learning from the hardcore racers what works and what doesn't to build my own setup as many have before me. I'd guess this is whats also driving begi to make the "mojo" system. There is a big difference between street systems and track systems.

Savington

iTrader: (31)

BEGi has been building turbo kits for Miatas for over a decade. I don't know what the mojo kit will be, but expecting them to suddenly come up with a system that works on the track is a little far-fetched, IMO. If they had that capability, they would have done it a long time ago.

Think about the companies that have produced game-changing parts in the last 5 years. The 6UL has become the gold standard motorsport wheel for Miatas, but 5 years ago it was an idea in Emilio's head. His frustrations from being unable to buy the parts he wanted for his own track car spawned the 8" 6UL, then the 9" 6UL, and now the 10" 6UL. The rigors of regular competitive motorsport provide the kind of environment that quality parts come from.

If you aren't testing your products by bolting them to a race car and beating the snot out of it, you're going to end up with egg on your face when one of your customers goes out and does it (with sub-par results). I know this first-hand - I've spent the better part of 4 years being that customer.

I don't think that difference is as big as people make it out to be. You can certainly get away with using lower-grade components in a street car, but I don't think that's acceptable. The same high-quality parts that will make our kits reliable and fast on the track will provide unparalleled low-end torque, response, and efficiency on the street. Thousands of people take their turbocharged street cars to the track every weekend - there's no reason why you shouldn't be able to purchase a turbo kit for a Miata and do exactly the same thing (assuming the rest of your car is up to the task).

TorqueZombie

iTrader: (6)

^This is why I'm willing to spend the cash to send my motor to you. When the cash fairy takes a huge dump in my wallet, you'll get my babies guts. <meant in a good way, just got married and living on military disability doesn't help buy motors.

yank

iTrader: (1)

I own 1 of the 6.. just sayin. :P

99mx5

iTrader: (16)

This is what makes the difference. Stop light street racers don't submit their cars to extended boost sessions. I remember the FM install instructions mentioning to limit the time under full boost to avoid damage. That is one thing a racer on a track will not do.

ZX-Tex

iTrader: (15)

^^ That wastegate design is fantastic. There is no need or reason I can see for a separated gases downpipe with that design. Between that, and the v-band fitting, it makes the downpipe super simple to fabricate without buying a v-band adapter. And the flow is still better anyway. Very nice. That is another big pro for the DIY customers.

TurboTim

iTrader: (9)

I have full confidence in your current and future products.

How many track hours do you typically put on component(s) such as those found in your turbo kit before feeling confident in their durability? What is your tentative schedule to fully track test the EFR's before you release the kit? I hate spreading them, but internet rumor is the EFR Ti-AL wheel + sustained track temps = higher risk of compared to traditional turbine technology.

shuiend

iTrader: (24)

Could you post some links to these rumors you are hearing? What exactly are you hearing also? I did not know Tial was making anything for the EFR turbos.

Savington

iTrader: (31)

The rumor I heard was that they had a few issues with the early wheels shattering while being used with anti-lag. They redesigned the wheel and beefed it up a bit and haven't had any issues AFAIK.

wittyworks

iTrader: (6)

the TI-Al hes talking about is the alloy of the turbine wheel, not tial the company.

Raffi from full race told me that i should take it easy on the turbo during my first start, because the wheel is fragile at first, but as it is used over and over again and heat cycled, it gains strength.

TurboTim

iTrader: (9)

I was given this thread to read, but I have not yet. I don't know what it says but supposedly the EFR came apart after 10 laps. I'll read it once I get the time.
http://forums.evolutionm.net/evo-dyn...yno-graph.html

And as was said earlier, EFR's turbine alloy is Titanium-Aluminum stuff.

Savington

iTrader: (31)

Cliffs:

-Big power E85 Evo w/ cams and a 7670 has shitty response on dyno
-Goes to track, shaft bends, damages compressor wheel, turbine blades are chipped
-Shop owner pulls his personal 7670 off his DD, sells to customer, installs
-Customer takes car to SLB and grenades the motor in 10 laps (melted spark plugs)

At the very end of the thread, the theories being throws out are that the first turbo was damaged from the factory, or from a previously damaged engine, or it ingested something which chipped the turbine blades and bent the shaft.

The replacement turbo spools significantly quicker. The customer takes the car to the track, where it promptly uses un-used portions of the map and significantly increased airflow levels to run itself lean and blow the new motor up.

They are still waiting for word from BW on the first turbo. With more experience using EFRs, the tuner may have caught the poor spool-up earlier, but everyone is still gathering data on what these things are supposed to do in various applications.

I'm still confident that the 6258 will perform as expected (a.k.a. better than everything else on the market today).