My tuning stuff

[lancer360]

Originally Posted by charliex

Simply answer, we went with a safe, conservative tune.

re intakes, the stock one, it works great

What is the story on headers? Do you expect any more gains with a header added on?

[charliex]

yeah there should be a decent gain with the headers, 18ish.

[proudpop]

Hey Charlie. Wasn't able to go to the last Vegas get together... But would still love to have you to some ECU work for me. Let me know when and if you are available sometime.

[Tim Taylor]

So what is the status of an ECU flash that will extract a bit more HP with headers, exhaust, intake and keep the gains from reverting to stock over time.

What is the nature of the problems with the 2006 and 2007 Lotus' that is causing the hold up?

[charliex]

he pp, no worries, theres another silver elise with black stripes in the area now too.

T4 ecus ( 05) are fine, T4Es (06) are waiting for a part to be fabbed before the tune goes on sale.

[exarkun1178]

i cant seem to pm you. i have a querstion regarding fuel maps...

[charliex]

feel free to ask here, don't be shy.

[exarkun1178]

with some on this board i am a bit shy.... with all the flogging lately. i have searched and and found opinions regarding differnt octane ratngs. and many post seem to say that the cars map is optimized for 91- 93/4. 93 is all i use. however, my question is, are you able to tune the map to optimize 100 octane rather then the 91-93/4 range?

[charliex]

yes there are whats called 'octane scalers' in the ecu, these are used for different octane levels.

the stock car is tuned for the lowest octane available in the region usually, one benefit of higher octane is less knock but thats normally only an issue with FI cars.

i know what you mean

[fpitas]

Charlie,

Once I get your reflash will my FF CAI lose any power compared to the stock airbox? If I get a reflash intended to be used with a supercharger will that work properly with an NA motor until I get the supercharger installed, or do I need two different tunes?

Thanks...

[charliex]

The supercharger tunes are much more aggressive fuel and timing wise, its not a good idea to run them NA unless you're just moving the car around.

Sorry, Not sure about the FF CAI since i've never had one to test with.

[fpitas]

Originally Posted by charliex

Sorry, Not sure about the FF CAI since i've never had one to test with.

I see. When I get the supercharger with your ECU will that become an issue, or do you think a generic tune for another CAI will work OK?

[charliex]

Its difficult to say with CAIs, all you have to do is look around the forum and see how many people have the same exact setups and some have problems, and some don't.

Without specific testing ,i just don't know, it will depend on how the CAI alters the MAF signal and the resulting changes to the AF mix, but the stock airbox will work

[fpitas]

Originally Posted by charliex

Its difficult to say with CAIs, all you have to do is look around the forum and see how many people have the same exact setups and some have problems, and some don't.

Without specific testing ,i just don't know, it will depend on how the CAI alters the MAF signal and the resulting changes to the AF mix, but the stock airbox will work

Fair enough. I'll go bug Casey to see if he has some answers

[charliex]

Oh that'll please him

[fpitas]

Originally Posted by charliex

Oh that'll please him

Yes, well...they appear to be using the CAI as part of their Exige S power package:

http://www.youtube.com/watch?v=QNfbxVEhGFc

[charliex]

on yeah i know, i meant asking casey about my stuff i'm joking (mostly)

[BrianK]

While we're asking questions - my tri-point SC'ed Elise runs pretty crummy at very low engine speeds & completely bogs down under 2K rpm when it's hot.
As an example, gingerly pulling into my small garage on a slight incline almost stalls the car out when I feather the clutch on/off to move a few inches at a time (watching the mirrors so they don't hit the garage door jams). Sometimes pulling into a parking spot does the same thing - it's feel like it tries to hold the idle at 900 or so rpm, but doesn't get it right & has to try extra hard to get it up there - causing a sort of stumble down to 300 rpm or so, then back up to 1000, then settling at 900 or so.
As a second example, while driving the car to tri-point the other day in the heat, when I lightly accelerated from a stop, rpms stopped at about 1700 for a good 2-3 seconds regardless of pedal input, then came to life & off I went.

Tri-point says the Xede doesn't do much down low, so I'm guessing this behavior is the result of parasitic loss from the supercharger & the Lotus ECU not knowing how to handle it. Does this sound accurate? If so, does the ECU programming you're doing address this?

Finally, what about smogging? I know no SC is legal, but minus the visual inspection, would the ECU interface with smog equipment & report all the correct things the equipment would expect to see?

[charliex]

if it weren't an off road only modification then theres no reason it wouldn't pass obd ii testing.

the set screw on the throttle body is the first place to look for idle issues.

there are no changes on that chip for the SC, its all supposed to be done by the Xede, all the chip does is keep a level playing field.

it can be addressed with a custom tune it they can't fix it with the xede.

[jlipper]

charliex - Trying to get in touch with you for tuning! I've been trying your aim instant messaging name - but haven't got a reply....

Please e-mail, call or smoke signal me!

jlipper@ptd.net

Joel