XEDE for Turbos

[The Pupat]

is anyone out there using the XEDE and to what effect?

I think there are better solutions than the Xede out there.

[ASE05]

I should be able to tell ya how the EXEDE goes on an SE. Getting it fitted 10.04.06 and fingers crossed all goes to plan.

[Sean]

The main attraction for me is the new plug-in loom and facility to switch between MAPS, meaning power when you want it and standard when you don't. Modified hardware will simply not pass inspection getting overseas.

I don't really get the necessity for multiple maps?
Unless you are running different types of fuel what is teh benefit?
I would have thought one properly optimised map/tune would be the go?

My car runs the same map for race and street, no economy issues, and plenty of power/

[ASE05]

[/quote]

I don't really get the necessity for multiple maps?
Unless you are running different types of fuel what is teh benefit?
I would have thought one properly optimised map/tune would be the go?

My car runs the same map for race and street, no economy issues, and plenty of power/[/quote]

It's definately not a necessity but having a having a couple of maps is handy:

Wet weather - always nice to be able to dumb it down in a car that struggles for traction in the dry(my previous Skyline was one)

Lending your car out - sure not many of us would allow someone we didn't trust to borrow 'em for a while but in the event someone unfamiliar has to get behind the wheel it's good insurance.

Dodgy fuels: no reason you can't have two maps, one for 98 and the other for 91. Handy once your outta the burbs stuck with regular unleaded or diesel as your only fuel options!

Just my 2 cents.

[Sean]

It's definately not a necessity but having a having a couple of maps is handy:

Wet weather - always nice to be able to dumb it down in a car that struggles for traction in the dry(my previous Skyline was one)

Less boost and a driving style to suit the conditions, if you dumb it down, chances are the economy will get worse.

Lending your car out - sure not many of us would allow someone we didn't trust to borrow 'em for a while but in the event someone unfamiliar has to get behind the wheel it's good insurance.

I'd like to think no-one can give the car more abuse than I do but really, if the engine is even close to a state of tune where you'd be worried handing someone the keys, it needs a re-tune. Squeeze ten tenths, sure but why try for 11?

Dodgy fuels: no reason you can't have two maps, one for 98 and the other for 91. Handy once your outta the burbs stuck with regular unleaded or diesel as your only fuel options!

Now that's feasable

[jolt]

Can the Xede control the S-VT / VVT system on the later model MX5's?

thanks
Rod

[ASE05]

An opinion only,

The MAIN reason for at least two maps being useful (for me) ...........

The Mazdaspeed Forum in the States have had plenty of feed-back on their website over the last 12 months regarding the XEDE.

Vishnu performance kits (sub-zero and zero) use the XEDE's tuning ability to muster up another 25/50 rwhp. The only hardware changes are an alternative bov in the sub-zero and dual spray injectors and new air intake in the zero. Unfortunately, as with all things new, some tings come to light with the passing of time, namely low speed driveabilty issues were encountered by some of the users. Typically, driving in slow moving traffic, car parks etc. Any way, two maps would have fixed the problem, especially with the switch between the two being at your fingertips (on the run). Chiptorque apparently fixed all this pretty smartly by going to the States no less. Now there are some people on the Mazdaspeed Forum (with the single MAP) saying that they have lost rwhp. The early systems were hard wired into the loom and only one map was used. The new version, with the Vishnu plug-in loom (great for removal when I need to get it back to stock for export) is the way for me. Could be stage sub-zero was at the limits or, being smoother now, the owners pants are not being jerked about so much, whatever. I think it is a good product and the sub-zero is for me since the extra 25 rwp of the second version has hardware in your face (the intake system) and the extra poke is only over the last 1000 rpm. More for competition than street I feel.

Finally, Chiptorque are here in Australia (almost next door), and the so called sub-zero is just the XEDE after all, plus some VERY IMPORTANT tuning expertise to get it to work.

ASE05, would you rather I stayed away on 10.04.06, my car is ready for the work too? I would like to compare the Dyno numbers.

Yeah Boris, I've been following the US site with some interest but it would seem that all the issues have been fixed up which has helped steer me towards the purchase of the EXEDE. The EXEDE definately has limitations but only if your looking past using the standard components. It'll do me for till I'm ready to upgrade manifolds and turbo's etc. Hopefully by that stage someone has developed a plug in replacement 'puter so I'm not stuck within the confines of the standard ECU.

I'm also awaiting the arrival of the SP Motorsports full upgrade kit and I've opted for a 3" exhaust with 3.5" Metalic Cat. I was speaking with Croydon Autosports last week and the guys had just finished an SE with the SP kit using a 2.5" and normal high flow cat along with a UNICHIP. They reckon it was putting out around 155 to 160rwkw @ 12PSI. That sounds pretty darn good to me!

As for staying away, c'mon down! I'm heading down there 30.03.06(tomorrow) @ 0900 to get a basline figure.

[Sean]

Unfortunately, as with all things new, some tings come to light with the passing of time, namely low speed driveabilty issues were encountered by some of the users.

See that's what confuses me, low speed driveability in a tune has nothing to do with peak hp ability.

Fuel quality I understand though.

[ASE05]

Well in standard form (including the popwer adding dirty standard paper filter)she topped out at 106.5rwkw in 4th. Pretty chuffed with that one!

Tomorrow morning she goes up on stands and I'm gonna try my luck with removing the exhaust myself. If I'm successful with that, it's onto removing the front bar, IC and air box!

I'm getting excited now!

Boris - Don't forget that she's down there again 10.04.06 @ 0900 for the EXEDE fitment and tune if your interested.

SP are only using a 2.5\" system to avoid the boost cut and whilst their initial figures were definately optimistic for just the upgrade kit, it sounds like 150 + rwkw shouldn't be a problem with the use of a piggy 'puter. The figures themselves aren't that important to me, it's the percentage of increase that I'm looking for.

[Sean]

SP are only using a 2.5" system to avoid the boost cut and whilst their initial figures were definately optimistic for just the upgrade kit, it sounds like 150 + rwkw shouldn't be a problem with the use of a piggy 'puter. The figures themselves aren't that important to me, it's the percentage of increase that I'm looking for.

Good luck mate, sounds like a realistic goal and the right attitude

If it doesn't make teh power, just add some more boost

[ASE05]

SP are only using a 2.5" system to avoid the boost cut and whilst their initial figures were definately optimistic for just the upgrade kit, it sounds like 150 + rwkw shouldn't be a problem with the use of a piggy 'puter. The figures themselves aren't that important to me, it's the percentage of increase that I'm looking for.

Good luck mate, sounds like a realistic goal and the right attitude

If it doesn't make teh power, just add some more boost

Thanks Sean!

I've been down this path that many times before, I need to buy new bloody shoes! Still, being able to brag with big numbers does apeal to me

[Sean]

low speed driveability in a tune has nothing to do with peak hp ability.

Sorry Sean, I don't understand what you are trying to convey.

Some one (possibly you I can't be bothered to read back ) mentioned that two maps could be used, one for low speed driveability and one for max power.

I was trying to to say the same map can do both. I know it's possible cause my car put out over 4 times the power it made standard. It also returns better economy on a long trip than it ever did standard. Economy in a turbop car is more about self control than anything

With a programmable ECU you can set the fuelling to run on MAP or MAF sensors and provide teh right amount of fuel proportinal to the amount of air the car is using.

At light load/low speed cruisng teh computer will tell the car to use less fuel. At high load it will use more fuel. Makes sense really, and it's teh same as an OEM ECU does.

I would think if there was a great benefit to being able to choose different maps then manufacturers would be going along these lines?

[Sean]

The factory could have made more power, but they have to meet emissions standards, Chiptorque etc are supposed to meet a lesser test (IM240 or in service tests) but it's ultra rare for a tuner to consider emissions when tuning.
Summary = The factory map is a compromise for emissions and safety.

Don't get me wrong, I really don't care if you choose to have 2 maps, I just don't really understand any advantage other than being able to use 2 fuel types.

I still think a good tuner can tune the car to be super drivable down low, and super powerful up high all on 1 map. I'd think 2 maps is a good sales pitch, I guess I technically could claim having 3 or more maps with my boost controller?

[ASE05]

Yup! A combination of stupidity and lack of instructions!

It's on now, just finished Only gotta fit the bumper and gaurd liners tomorrow night and I'm SORTED!!!!! I've re-booked Chiptorque for 12.04.06 @ 0900ish. PM me your number and I'll let ya know what time to head down.

NatMeet track day here we come!

[The Pupat]

So, if I understand you correctly, if Chiptorque and Vishnu etc. claim more horsepower from a standard factory car by changing the engine management parameters and not any hardware, the factory could have done a better job, since both cannot be as good as each other?

I cannot agree with that; they are just different. The factory is more conservative on boost, timing etc. presumeably for longevity. But, the aftermarket guys get more power at the expense of something surely. So, why not have both?

As far as the factory offering more than one program, how are they going to have a base for warranty? All their cars are a compromise of some sort, to fit into a market niche.

The only place I can think of where there is little room for compromise (and cost is the least of their worries) is Formula One; how many choices do they have from the drivers' seats I wonder ...... ? IF it is more than one, then why?

Umm Sean is correct a proper tune will have no issues. This crap about needing 2 maps to get good low down driveability and bigger top end, I would imagine (unless something drastic has changed in the EXEDE in the last 2 years) that this has more to do with the limits of the EXEDE to adequately modify the computers parameters across the RPM range.

Anyway I hope this product lives up to your expecations, though personally if anyone played the "requires 2 maps to get good low-down driveability and high-top end" I would certainly not be letting the door catch me on the way out.