[codingparadox]

I made a general post about this in the main powertrain forum, but I'll expand on this a bit here...

My goal will be ~380-400rwhp, on a Rev400TVS kit with a small pulley, on a built low compression motor. I'd really like to have adjustable traction control, CAN bus for an AIM dash, and flex fuel ability (I'll be running E85 for race events, but pump gas on the street, which means various mixes running at all times, and I'd really rather not have to drain my tank and pull out a laptop to switch tunes every time I do so.)

The one big issue is that I live in an area that will check my OBD readiness/validity every 2 years. So, it seems like my options are basically as follows:

1. Pay 1800$ for the BOE stage 2 kit for the stock ecu. Will pass emissions all day, single ECU, supports adjustable TC, questionable CANbus, and no flex fuel.
2. Pay 800$ for a one-time "emissions pass" tune on my stock ECU by BOE, and then put a standalone in the rest of the year.
3. Just buy a standalone, then every 2 years swap out the supercharger kit/injectors/FPR, figure out how to defeat the missing cat codes, and pray that my lower compression motor still runs on the stock ecu well enough to not throw codes.

#3 seems fraught with peril. #2 seems questionable about whether, when I keep futzing with my setup, the one-off emissions tune will keep working. #1 doesn't support flex fuel, which is a huge annoyance for me.

Any suggestions or something I'm missing here? Anyone have a better idea, other than taking up fishing? :sad:

 

[lotus90]

what year lotus? it will make a difference in the answer.

 

[codingparadox]

Oh, sorry, of course. 2006-2007 (DBW T4E).

 

[hackish]

While it's not impossible to do a custom tune for the flex fuel, the stock ECU has no support for an ethanol content sensor. When the black dash stuff is delivered it could be possible to do up a switch to change tunes on the fly.

-Michael

 

[<@¿@>]

While it's not impossible to do a custom tune for the flex fuel, the stock ECU has no support for an ethanol content sensor. When the black dash stuff is delivered it could be possible to do up a switch to change tunes on the fly.

-Michael

Do you have any estimates on when that will be? ...the black dash editor...

 

[Westrock]

Also while it's not on the fly, you can certainly switch maps at any time with FastWorks. Takes less than a minute.

I would suggest having Phil do an actual tune. He knows the software and can get it going quickly. There may also be features not readily available to the end user that Phil will have access to.

 

[codingparadox]

Yeah but then I need to have a laptop with me any time I might switch gas.

I'll prolly end up having Phil do the initial tune on the setup. I need to get a quote from them on how much they want to do a bunch of the service work for the motor swap and such to see if it makes sense to have him do all of it or only some. I need to do the E153 swap at the same time, which sounds like it's tricky and potentially issue-ridden, so I may want to do that myself, at which point I might as well do an engine swap/supercharger install myself, and only have him do a tune.

 

[hackish]

Phil is the best contact. I just write code and tune cars all day long. One of the local guys has a turbo on his car so I've been itching to try on-the-fly map switching.

It could be done with a switch on the dash but I've got no real way to deal with blending values between 2 maps based on the output of an ethanol sensor. That would require literally weeks of work and weeks of testing and there is not a lot of demand.

-Michael

 

[codingparadox]

With a switch would be a great start.

Can I write the code and test on the fly switching?


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[cashxdr]

Two other options are Radiums EMS and DRS setup. I believe Radiums is about 2 grand and DRS is around 2800.

Radium's system uses the stock ECU to run normal stuff, dash, fans ect and then have their ECU adapted with php harnesses. The DRS EFI X2 replaces the stock ECU

They both offer adjustable traction control, E85 and I think flat shift

I know lots of people can tune in the AEM language of the Radium system and if you have experience can tune it yourself

Plug and Play EMS Kit for Lotus

I do not know much about the DRS EFI X2 other than it is suppose to be a big jump from their older system

DRS EFI X2 PnP ECU Tuning - Dynamic Racing Solutions

And of course you have the Fastworks software that runs on the stock ECU that Phil is supporting which with the cable is roughly 2 grand

http://www.boefabrication.com/index.php?/boe/product/level-2-tuning-suite

Those are what I have found for something I can tune myself/take to a tuner