EFI Technology standalone?

[RCHAD]

sorry to butt in, how much $$$ is the dbw controller and is it available....i run an efi unit as well and some days my car runs (idles) perfect (no surging at all) and other days it hunts vigorously

[perryeyges]

Originally Posted by Kris from DRS

Perry,
If this car is turning into a race car i highly recommend pulling out the heavy, bulky and overall limited stock engine harness and replacing it with our complete mil-spec engine harness that has all the capabilities of the system ready in place. Our harnesses are much lighter, cleaner, and more durable. If you do this you can eliminate the stock ECU altogether. And if you ever needed to go back to stock you just reinstall the stock engine harness and ECU, nothing gets damaged in the process.

Kris, This must be what John was referring to when he said you will need the "HARNESS"...

[perryeyges]

Kris, What kind of $$ are we talking about in regard to the replacement main harness?

[Kris from DRS]

Originally Posted by RCHAD

sorry to butt in, how much $$$ is the dbw controller and is it available....i run an efi unit as well and some days my car runs (idles) perfect (no surging at all) and other days it hunts vigorously

I'm working on building DBW modules right now. There has been a car using one for a few months now and we are happy with the results. Please email me at kris@racesolutions.com or call me at DRS 562-694-2226 to place an order and get more details.

[Kris from DRS]

Originally Posted by perryeyges

Kris, This must be what John was referring to when he said you will need the "HARNESS"...

There are 2 ways to do this.

1. Leave the current set up in the car and we add a sub-loom for the dash display. We can also add channel inputs to your OPTION sub-loom as mentioned before.

2. We replace the stock engine harness with our Mil-Spec harness that has all the inputs already built into it. This is nicer, cleaner, lighter, and more reliable for race use b/c the parts are rated for higher temp and vibration resistance. *If your car is DBW we build it to use the control module as standard.

We also build a data link into the system so that if you want to expand to a chassis logger it is a plug-in deal.

Please call me or email me directly for a price breakdown. thanks

[perryeyges]

Originally Posted by Kris from DRS

There are 2 ways to do this.

1. Leave the current set up in the car and we add a sub-loom for the dash display. We can also add channel inputs to your OPTION sub-loom as mentioned before.

2. We replace the stock engine harness with our Mil-Spec harness that has all the inputs already built into it. This is nicer, cleaner, lighter, and more reliable for race use b/c the parts are rated for higher temp and vibration resistance. *If your car is DBW we build it to use the control module as standard.

We also build a data link into the system so that if you want to expand to a chassis logger it is a plug-in deal.

Please call me or email me directly for a price breakdown. thanks

Kris,
My car is an early 05 so no DBW..
I called J. Modica this AM and he does have a full harness and dash in stock so it looks like we will be adding them to compliment my EFI ECU. I am hoping to toss(sell) the stock ECU and imobiliser. I am excited about removing the OE harness. I am obsessed with weight and have been pulling the harness branches out of the OEM loom as I was eliminating systems in my car such as alarm, radio, etc. If I had known about your loom I would have kept mine stock and tried to sell it on the open market.. I'm sure they are rather pricey from a Lotus dealer... OH well, my bad..

I would imagine that I can remove the redundant branches off of your harness as well..

[Kris from DRS]

I should talk to John about what version of wire harness you are getting from him. As long as it is a complete system that we built for all the parts to work together you should be fine. Our wire harnesses are not at all like the stock ones. There is nothing redundant, they are purpose built and sealed with mil-spec Raychem DR-25 heatshrink. If it is in your budget I recommend adding the wideband Lambda to your system.



I included an image from our general website, www.racesolutions.com

our Lotus EFI specific site is www.drsperformance.com Both are in need of updating...but there is some info nonetheless.

[perryeyges]

What does a wideband Lambda do.
What kind of $$ are we talking?
Does it require a lot of laptop or dyno time to set it up?
I really would love to have a Mil-Spec harness made for my car and it's individual needs, but I will talk to John to see what it is that he has..

[Kris from DRS]

Originally Posted by perryeyges

What does a wideband Lambda do.
What kind of $$ are we talking?
Does it require a lot of laptop or dyno time to set it up?
I really would love to have a Mil-Spec harness made for my car and it's individual needs, but I will talk to John to see what it is that he has..

The wideband Lambda has higher resolution, faster response, and corrects the mixture much more accurately than the narrowband sensor. We set it up so that it simply plugs into the existing system, and we will provide the map with the calibrations for it. If your car is already tuned there is no need to re-dyon it, we just transfer the data over. You need to call or email me to get a quote, and we need to verify exactly what you are getting from John.

[perryeyges]

Originally Posted by Kris from DRS

The wideband Lambda has higher resolution, faster response, and corrects the mixture much more accurately than the narrowband sensor. We set it up so that it simply plugs into the existing system, and we will provide the map with the calibrations for it. If your car is already tuned there is no need to re-dyon it, we just transfer the data over. You need to call or email me to get a quote, and we need to verify exactly what you are getting from John.

Why don't you give John a call to check out which harness he actually has. I don't think he is sure what it is. Perhaps you can also ask him if he thinks the Wideband Lambda would be something that we would want to go with and then you two can talk price as well..

[fzust]

Originally Posted by Kris from DRS

Randy, it's never too late

the stock ECU remains to turn the fuel pump on and provide grounds for the stock relay module (Fred's favorite).

Kris, I am looking forward to putting in the dedicated harness and taking my ECU and seeing exactly how far I can hit it with a baseball bat! The aerodynamics are not very good, but I am thinking a standup double.

[fzust]

Originally Posted by perryeyges

What does a wideband Lambda do.
What kind of $$ are we talking?
Does it require a lot of laptop or dyno time to set it up?
I really would love to have a Mil-Spec harness made for my car and it's individual needs, but I will talk to John to see what it is that he has..

Perry,

Get the wideband lamda, its awesome. Hello 370CHP on stock motor over here!

[perryeyges]

It looks like we are going to go with the wide band if I can wedge my car back into the FFed shop. They are a busy group and deservedly so.

[mark.r]

Originally Posted by perryeyges

It looks like we are going to go with the wide band if I can wedge my car back into the FFed shop. They are a busy group and deservedly so.

It will be cool. I have a wideband already in my car (not the EFI one). As soon as I get the DBW module installed which is what we are doing now, Kris is looking at making a harness/plug to use my current wideband the same you guys are talking about using the EFI wideband. We are doing this since everything is already installed in my car.

One question, what location will the wideband O2 sensor be placed. Pre cat correct?

[fzust]

yes, pre-cat

[mark.r]

Originally Posted by fzust

yes, pre-cat

This applies to turbo applications . . .

Ok. Just something I discovered that I need to run by Kris. Based on my conversations with some of the Evo guys who run widebands their O2 sensors typically last for 3 or more years. Now mine lasted about 11 months. It was installed last March and I just replaced it last week. Speaking with the guys at the shop we determined (or at least think) it is a heat related failure. Now of course it could be a bad sensor but we assume not because it has worked without issue since we put it in. We think it is because the distance from the turbo to the cat is so short in the Lotus vs. other turbo applications. The install instructions from Bosch want it at least 16" from the turbo well that ain't going to happen in a Lotus. It is more like 6" from the turbo. At that distance you are seeing temps around 1500F/800C at full throttle applications. So at this point I am assuming the O2 sensor is going to be a yearly consumable for me.

[Casey@EFI]

Hey Everyone,

Let me first introduce myself my name is Casey and I'm an engineer here at EFI Italy, while the post I'm directly replying to is a bit old I wanted to clarify some things.

We are not an offshoot of EFI Italy, it is actually the other way around and I technically wouldn;t even call either of us an offshoot of each other.

Mugen in fact has always used us on any of their engine and data system projects where they were allowed (spec ECU series being the exception) Since they have used us they have developed their own ECU but still use us for Data systems and custom hardware and software design.


A brief History about EFI and our credentials.

EFI Technology Inc. has participated in some of the highest echelons of racing since its inception in 1988; GTP, CART, IRL, SCORE, Etc. etc. We specialize in custom software and hardware design for all of our clientèle and this allows us to deliver where most other companies cannot.

If you have any questions related directly to EFI Technology please feel free to contact me, if they are related to the Lotus specific ECU application please contact Kris @ dynamic.

Thanks and Best Regards
Casey Heerman
Technical Engineer
EFI Technology Inc.
casey.heerman @ efitechnology.com (remove the spaces)

Originally Posted by EfiOz

Just to confuse this issue, there are two EFI Technology's..........

The one you are refering to that produces the Race1.2 ECU is based in Torrance CA and is an offshoot of the original company based in Bologna, Italy.

Hope this clarifies things a little bit.....


The original EFI Technology is the company that produces the original Lotus ECU's (Including the 06 onwards Exige S) as well as the OE ECU's for Lamborghini. They have also had a lot to do with just about all of the Magneti Marelli Racing ECU's over the years.

Reiter uses the Euro12 system in the Murci GT1 car as do Judd, Mugen and a lot of other racing and OE companies.

The ECU that comes standard on the 06 on Exige S is known as a Euro4 in the aftermarket range. This is also used by JAS in Italy for the Honda Civic Type R rally homologation package.

I think I've made this as clear as mud.

[Casey@EFI]

Mark this may or may not solve you're problem and I do apologize that I haven't had a chance top read a little bit further. The bosh rnage of o2 sensors are a great sensor for the price, however based on a wide variety of customer feedback they just aren't as durable, and or as accurate as the NTK.

We have had a customer successfully use NTK sensors on a 2 stroke Drag boat application (let's not get into the details it all seems kind of funny to me), and he's been on the same sensor for almost two years now!

While the NTK sensor is more expensive, if it lasts twice to three times as long it might be worth it.

Originally Posted by mark.r

This applies to turbo applications . . .

Ok. Just something I discovered that I need to run by Kris. Based on my conversations with some of the Evo guys who run widebands their O2 sensors typically last for 3 or more years. Now mine lasted about 11 months. It was installed last March and I just replaced it last week. Speaking with the guys at the shop we determined (or at least think) it is a heat related failure. Now of course it could be a bad sensor but we assume not because it has worked without issue since we put it in. We think it is because the distance from the turbo to the cat is so short in the Lotus vs. other turbo applications. The install instructions from Bosch want it at least 16" from the turbo well that ain't going to happen in a Lotus. It is more like 6" from the turbo. At that distance you are seeing temps around 1500F/800C at full throttle applications. So at this point I am assuming the O2 sensor is going to be a yearly consumable for me.

[mark.r]

Originally Posted by Casey@EFI

We have had a customer successfully use NTK sensors on a 2 stroke Drag boat application (let's not get into the details it all seems kind of funny to me).

Should I be laughing at that . . .?

Thanks Casey for chiming in. I am willing to try it out. I just replaced my first sensor with an identical Bosch unit so I "should" be Ok for another year (I hope). But when this one goes out I would like to try an alternative. The question would then be, how so a source a NTK unit that will match up with the same plug as the Bosch unit I am currently using? HINT: I am not good when it comes to electrical anything!!!

[Casey@EFI]

I did, until he started explaing the details of his operation with his climate and altitude controlled dyno room blah blah blah.

The plugs will definitely be different and you will have to excuse my ignorance on the zeitronix amplifier, but unless it is setup for the ntk it might require a amplifier change as well, if it supported changing the plugs is a fairly easy deal

Originally Posted by mark.r

Should I be laughing at that . . .?

Thanks Casey for chiming in. I am willing to try it out. I just replaced my first sensor with an identical Bosch unit so I "should" be Ok for another year (I hope). But when this one goes out I would like to try an alternative. The question would then be, how so a source a NTK unit that will match up with the same plug as the Bosch unit I am currently using? HINT: I am not good when it comes to electrical anything!!!