Do you have any intake airboxes?

 

Funny. I was on your sight the other day. Guess I caught something about you in Honda Tuning? First off' the '06 (mine) and later cars use throttle by wire. Not necessarily good for you or me. '05s are cable. There are plenty of '05s.
I don't know of anyone here that has ITBs. It's been discussed. Most people like bolt ons. There has been no ITBs for us yet. A couple of guys are playing with the stock manifold, that's about it for a single throttle body. I don't even know how well that is actually tuned. I never even measured the runner length or flowed one. Of course the first thing anyone would want to know is just what could be realistically expected in terms of performance an ITB setup would offer and what would be the sacrifice.
While a fairly high number of people here track their cars. Most are street only or street with occasional track use. They want the idle quality to be pretty good, for instance. You'll find that just about everyone here is interested in more power. In fact we've been chomping at the bit. The supercharger kit has been the lastest offering. The ITB and electronics to run it will have to compete on a price vs performance basis. I'm not trying to discourage you. Just want you to understand things here.

 

Hello all,

I don't wish to anger the forum police,

No worries about that. If you make a product for a Lotus, we would love to hear about it.

I know another vendor is coming out with a larger throttle body, but as far as I know, nobody is doing individual throttle bodies yet.

 

You'd have to get a MAP based standalone ECU to run the ITB's. Trial has them in their Exige. It was reported in a Super Street magazine over the past year. Found it for you guys off another website:

http://www.superstreetonline.com/featuredvehicles/130_0708_lotus_exige/index.html

Lotus Exige - Hapa-Liscious
Proof That White Girls Should Get With Asian Guys
writer: Carter Jung
photographer: Jonathan Wong

Hapas. One part Asian and another White; it's the human equivalent of a cream cheese and rice mish-moshed Philly roll, only less disgusting. Sometimes.



As hybrids, Hapas affirm the advantages of biological diversity and the potential cross-breeding has for our future-i.e., hot chicks. One need not look further than Vanessa Minello or Kristin Kreuk for substantial evidence. However, occasionally there are the Danny-DeVito-twin-brother, freakish instances. *Cough, Rob Schneider, cough*. Despite crappy male whore sequels, the Lotus Exige is a prime example of Eurasian done right.

Already a competitive track car, the stock Exige combines years of British chassis know-how with Toyota's zesty 1.8L 2ZZ-GE motor (found in the Celica GTS). 190 hp might not sound like a lot, but throw that in a 2,000 lb chassis and you have a go-kart with body panels. Now, take a custom 3ZZ kit bumping displacement to 2.0L like this Trial version and you have 227 hp of all-motor individual throttle-bodied sucking goodness. Throw on limited edition Time Attack TE37s, Trial-dialed (it rhymes!) suspension and transmission, sweet-sounding Trial exhaust boasting titanium tips and a host of other lost in translation modifications, and we can only imagine how fast the Trial Exige would be on Tsukuba. This further proves that, despite historical acts of forced Imperialism, Asians and Europeans can co-exist.

See white girls? Give Ricky and I a chance. If not out of pity, do it for reparations.

Faster Facts

Lotus Exige

Owner Trial

Hometown Osaka, Japan

Daily Grind Tuning shop

Power 227hp

Under The Hood Trial 3ZZ stroker kit (TRD high-compression pistons, H-beam rods, crankshaft, flywheel), individual throttle bodies; strengthened oil pump; oil pan baffle; sports air cleaner; aluminum radiator; custom exhaust

Drivetrain 1.5 way LSD,4.8 final gear

Brains A'pexi Power FC (controls VVT); HKS Pro (controls spark and timing); Trial ECU

Stiff Stuff Trial suspension STOPPERS AP brakes

Rollers Volk Racing TE37 Time Attack wheels; Dunlop tires

Outside Front spoiler; carbon rear wing

Inside Recaro seats;

Ice HKS gauges

I love being full of "useless info" :sheep: .

 

I contacted them along with many others and they had 0 interest. Too small of volume. ECU issues and DBW.

 

With this 2zz engine being used in more than just the Lotus chassis,
I'am just wondering if there is a need or want for a real ITB system to fit this engine,
that would still make torque and does not hit the Lotus driver in the back of the head.

Other applications that have worked well with my ITB systems are,
The K20-K24 Honda which can make 270hp with straight forward mods N.A..
The S2000 has made 280hp with correct cams and exhaust.
And these power gains are mid range and up.
Much better mid range drivability.

I don't make systems to work with DBW, as the intake systems have a minimum of 4 throttle return springs, 1 per throttle, dbw stepper motors would not be able to handle the effort needed, so I stay away from this.

Not everyone wants to go turbo or supercharger,
or if a person races in a class that does not allow turbo's and supers.
Than the ITB's are the way to go,
as they make the use of large aggressive cams and high compression pistons drivable.

What I was thinking about, was an intake system that still turned forward and down to clear the rear deck on the Lotus and the low hood of the Celica, but had larger runners and an apropriate length for the power band needed.

The stock intake manifold is 48m/m in diameter,
where it enters into the plenum.
Head ports are approx 44m/m crossection.
This is not far off the S2000 at 45m/m at head, so the basic port geometry is close.

Just looking for new markets to work with.
Is there a market for this, I don't know!!
LHP
www.haywardperformance.com

 

The engine in the Trial Exige isn't in the stock location.

 

These were made a little while ago, but Boosted2.0 said they're not optimal, regardless of them most likely flowing better:

 

The bore on those TBs is smaller than that of the stock runner. Its a flow restriction, not an improvement.

 

Those throttles look to be the 20v toyota or Toda type throttles and are only available in smallish sizes.
I have access to throttles from 40m/m to 70m/m and anything in between.
Intake systems to work correctly have to be designed for the end use,
not just adapting something that is close at hand,
maybe why they are not as effective as was wanted.

LHP
www.haywardperformance.com

 

WOW!

Is Trial's front splitter a bespoke job? Or is it available somewhere???

xtn

 

Bespoke. Front clam has been widened per my emails.

Back to the thread please.

 

Yea, I believe the last picture I posted was meant just for a show car.

 

Physically, yes its just begging to happen. As mentioned the problem comes down to metering the air and the majority of Lotus's moving towards drive-by-sire (only 05 Elises had throttle cables).

Honda's didn't become hugely popular by chance....excellent engines and mod friendly designs :up:

 

Those do look like the 20v ITBs that i have on my little monster...
the throttle response is absolutely amazing, and it sounds so crazy.
I would love to have ITBs on the 2zz, just need a good management system and tuner.
or better yet....a k20 with ITBs

 

Those do look like the 20v ITBs that i have on my little monster...
the throttle response is absolutely amazing, and it sounds so crazy.
I would love to have ITBs on the 2zz, just need a good management system and tuner.
or better yet....a k20 with ITBs

QUOTE]

If you want Acura/Honda K20,K24 ITB's,
I've got a couple of systems available.
One system is for the RSX with power steering and is an underhood style,
with built in vacuum tree for power brakes.
The other is straight out at port angle and is more race oriented,
It's based on my S2000 system
(it's not shown on my website).
Email me from my website for pictures.

Thanks:LHP
www.haywardperformance.com

 

TWM was going to make them for the Celica back in the day but bailed on the project when they realized that they would be sticking up and out through the hood. They left an open offer to do them for $2400 including injectors and literally no-one ever took them up on it. Hood clearance on the Celica is Minimal. Your market, should you develop them, is going to be mostly Elise.

The other issue is that this is a MAF car not a MAP car, so you will have to build a plenum or folks will have to get a $3000 Hydra standalone.

 

The way TWM makes their parts,
is always basically straight at port angle runners,
this way they can use the basic setup over and over, machining wise, just move the centers.

The throttles I use, are separate from the manifolding,
this way I can make just about any application work.
As it would be just the manifold that would have to curve or turn etc.
Also superior linkage systems that work.

For the MAF people,
they would have to buy an ECU to tune right.
The average MAF is not going to keep up with the gulp factor that ITB's have,
and before someone says BMW does it,
they have a their own Bosch ecu that also has fly by wire and or secondary throttles to keep in sync with the Maf.
The average guy would have a tough time tuning ITB's with a MAF and an aftermarket ECU.

If there was a market with both toyota and Lotus people interested,
than there might be enough to do it.
As the manifold design would be the same for both applications,
Close turn, slightly to the right, forward and down to clear hood and or firewall depending on the brand of car.
The manifold design would be simpiler than some,
as the fuel injectors are in the head.

But there does not seem to be any real feed back so, that's that.

Thanks:LHP
www.haywardperformance.com

 

It seems to me that ITBs don't have nearly the bang for the buck of a supercharger. They are dammed sexy looking and sounding, though.

 

Bump from the dead since I was about to create a thread asking if anyone made a kit anyhow...

Did anything ever come of this kit? I just sold my Miata tonight and I already miss the awesome sound and throttle response I was getting from the ITBs... had to start thinking if there was anything for the Elise that would get me that sweet, sweet sound back.

I don't see anything on the Hayworth page and I want this look, sound and response back again! I shouldn't even be thinking on it, there's nothing wrong with the stock setup... but it's tough to go back!

Do want again!

 

Regular cable-operated 2ZZ Lotus is limited to just under 2000 cars in this country I think. We do have a high percentage of modders, but let's assume you're still talking about maybe a potential market of 500 owners. Now figure maybe 100 of those that would entertain the idea of ITBs, and possibly seven or eight people that might actually buy it.

It sounds really cool, and I'm mod happy, but I wouldn't throw down $2500 or something like that, plus the expense of an ECU and tuning, like that for what would ultimately be possibly ten HP give or take? Well, I've got the DBW anyway, so this opinion is moot, but you see what I mean. If you ended up with seven or eight buyers you would probably be tapped out.

It's sad because I love stuff like this, but that's my assessment of your Lotus market. Don't know what the Celica market would be.

xtn

 

I believe Trial was the only people able to fit ITBs to an exige.. Then found it was not worth it and went with a supercharger instead..