lordlucan

After running my car on the rolling road at PE in January and only getting 234bhp with a full decat and induction kit I investigated why the figure was low. As we now all know the ae802 green sticker ecu is to blame for this, however could I find an earlier ecu for sale for decent money, even Grade A now have a waiting list.
From this forum I discovered a company called Ecutek, run by some well established gents. They will re-program your Ecu to an earlier version for £150, I booked my car in for Saturday, as Ecutek share offices at PE i also booked a rolling road session to ensure my money was well spent.
On my first power run a laptop was used to log data direct from the Ecu, capturing more than I could understand. My car hit 236bhp, Stephen went through everything with me, pointing out a lean spot at low revs due to my induction kit. His next step was to re-program my Ecu with his version of a AE800 MY99 Ecu. My next power run got 268bhp with a really impressive flat torque line. This was without changing any fueling / boost, how impressed was I.....
Driving the car home was a different story, its always needed to be wound up to fly, not any more, 3rd gear feels like 2nd, I dont need to change down for instant accelaration and response, I was so amazed, I drove like a nutter the 70 miles home, at one point beating my best top speed by 7mph, without even knowing I was going so fast, this was without trying, well I did have an MR2 behind me at one point !!!!
This morning from cold I got no hesitation/surging at all.

Anyone interested I have the data log from my car in .csv format, you can see I am running standard boost / fuelling etc, I also have printouts from the rollers showing the differences. I was pleased to see my car advances the timing by .5, Optimax must make a difference !

A big thanks to Stephen of www.ecutek.co.uk and to David Power of Power Engineering who sell this product. They do a mail order sevice as well, they will send you an pre-programmed Ecu, you then send back you original Ecu.

I am at Bolney if anyone wants a ride to see the difference.
MY00 DBM W705 ***

Jase

StephenDone

Hi Jason,

I'm glad you are pleased with the result. I'll detail what we changed in your ECU...

Like you say, we dyno'ed your car as it came in. While we did that, we data logged ignition, fuelling, lambda, knock, boost & RPM using DeltaDash. After your run, we analysed the results. You had not overboost (good), and your knock correction was working. We identified a lean spot in your map, as your car was coming on boost. 1000 to 1500RPM I believe it was - many cars have this, even if not modified.

We then did another dyno run, and used our custom mapping software to view access to the fuelling map in real time. We noted the areas of the map that were accessed when the car was running lean. After this, we reprogrammed your fuel map with improved values for this region. We also removed a point of fuel from you map at high loads - Scoobs run very very rich. Your boost control was then altered to give you car the characteristics similar to the more eager '801 version of ECU.

The second dyno run was then done. No changes in knock, first of all. The turbo spools up marginally earlier due to the better fuelling at low RPM. Hopefully you'll see a couple of MPG extra per tank too, due to the minor reduction in fuel.

Here's a link to your dyno plot in GIF format...

http://www.ecutek.com/products/deltaecu/

Since Jason was one of the first customers, Power Engineering provided complementary use of their dynamometer - thanks. This would not normally be included for a driveability remap, though of course you can get one while you're there.

Any questions, please ask.

Cheers

Steve

T-uk

steve,

is the lean spot low down usually found with the ae802 ecu or with all versions of standard MY99/00 ecu's?

cheers

DowdingS

iTrader: (1)

Steve

If I asked you to do the same on my MY00 (AE802) with backbox and filter, how much would it cost?

Regards
Steve

nom

I've been wondering how much of the effects of changing to an AE800/1 from 802 are negated by using a Dawes - I realise that the timing is also off with the AE802, but as control of the spool-up, etc. is taken away from the ECU by the Dawes, some of the problems would disappear?
I ask this 'cos I have a Dawes & an AE802, like as lot of other people, I imagine. Dawes made a whopper of a difference. How much more is going to be made if the AE802 were re-programmed to an AE800?
Also, while I'm here & we're doing the Ecotek thang, what sort of state is the new 'Delta' thingy in? Last I heard it was coming along nicely, but not yet completed.
Loads'a questions!

nom

Oops - didn't explain myself very well there!

Looking at your marketing stuff (), I meant the 'Performance Remap' rather than the better-than-AE800 'Driveability Remap'.
Looks good to me!

john banks

"my Injector Duty is hitting a maximum of 80.3% at 6380 RPM with a boost pressure of 15.1 PSI. If you had set your boost to 18PSI, then you're gonna be dang near to running out of injector capability"

My car is boosting less than 15 PSI at 6000RPM, and the IDC are below 80% all the way. The Dawes just won't let you run 18 PSI this high.

I am actually planning to lean out over 4000RPM by 1 AFR point with the Dawes or an EBC when I can sort out the time to do it (and am monitoring knock). Maybe this will make it more keen to boost at the top end, so I'll need to watch out for that. Certainly 15.1 at 6300 seems more than mine seems to boost.

SecretAgentMan

Jase>>Good news!

Stephen>>What turbo are you running to get that power with that boost?

/J

john banks

The standard TD04L on a MY99 he said before.

StephenDone

Sorry John,

I was reading the wrong column in Excel - 15.1 was my injector pulse width in milliseconds. My boost is about 12.7 PSI at 6300 RPM.

Oops !

Steve

StephenDone

Hi Nom,

Yes, PE will do a rolling road remap for I think it's 625+VAT.
(I don't work for PE, I work for EcuTek who produce the programming kit). Give PE a ring, and they'll confirm.

Cheers

Steve

StephenDone

Hi Jerry,

Yes, std turbo & fmic. Boost is 12.7 PSI, not 15.1 as I wrongly stated. Sorry if it sounded like I was divining boost from nowhere !

Full spec of the car is at http://www.steve.ukmail.org/car

Steve

SecretAgentMan

Stephen...it'd be quite interesting to see some dyno printouts...without passing judgement I'd say yer killing the poor ickle td04 there, fmic...and 292 hp....how much boost in the midrange?

Cheers!

/J

StephenDone

Here's my RPM v boost v Wastegate Duty...
As you can see, my wastegate duty cycle is only 67% when I'm producing max power.
My mid-range boost is about 16.3 PSI. Much lower than 'some' people run :-)

Engine Speed Manifold Relative Pressure Primary Wastegate Duty Cycle
790 -2.8 0
830 -0.1 18.8
859 0.1 56.5
917 0.3 91
983 0.3 91
1013 0.3 91
1061 0.4 91
1113 0.4 91
1169 0.6 91
1210 0.7 91
1259 0.7 91
1303 0.9 91
1331 0.9 91
1379 1 91
1421 1.2 91
1459 1.2 91
1502 1.5 91
1535 1.5 91
1577 1.6 91
1606 1.9 91
1652 2 91
1686 2.2 91
1717 2.3 91
1761 2.3 91
1787 2.5 91
1824 2.6 91
1865 2.8 91
1876 3 91
1903 3 91
1921 3.3 91
1959 3.5 91
1986 3.6 91
2015 3.9 91
2041 4.2 91
2072 4.4 91
2097 4.6 91
2132 4.8 91
2161 5.1 91
2203 5.2 91
2240 5.5 91
2280 5.8 91
2334 6.2 91
2386 6.7 91
2436 7.1 91
2493 7.7 91
2542 8.3 91
2591 9.1 91
2655 9.7 89
2723 10.4 89
2771 11.6 87.5
2843 12.5 87.5
2925 14.1 87.5
3005 15.5 87.5
3097 17.1 85.9
3186 18.4 80.8
3281 17.8 72.9
3360 16.7 71.4
3450 16.3 71
3541 16.1 71
3609 16.1 71.8
3680 16.3 71.8
3763 16.5 71.8
3856 16.4 71
3914 16.5 70.2
4017 16.7 69.4
4103 16.7 69
4188 16.7 68.2
4264 16.8 67.5
4353 16.5 66.7
4456 16.7 66.3
4562 16.3 66.3
4664 16 66.7
4753 16.4 66.7
4842 16.3 65.9
4937 16.4 65.9
5054 16 65.9
5126 15.8 67.1
5219 16.1 67.5
5353 16 59.6
5447 15.2 57.3
5543 14.7 55.7
5610 14.1 54.5
5721 13.8 53.7
5809 13.6 53.3
5869 13.5 52.9
5957 13.5 52.9
6034 13.2 51.8
6117 12.9 50.2
6214 12.8 49.8
6297 12.5 49
6383 12 49
6488 11.9 46.7
6579 11.8 44.3
6643 11.5 43.5
6745 10.9 43.1
6818 10.9 43.1
6919 10.7 43.1
6977 10.7 43.1
7096 10.9 43.1

(My little turbo's quite happy)

Steve

Markus

Jase,
Will blag a ride from you @ bolney this weekend. Gald you're happy with what you have done.

Don't suppose this type of thing can be done to a MY94 WRX ECU? just curious

dowser

Your little turbo is happy because it's being looked after well, lol

Richard

DaveMcC

Jase

Would also be interested in blagging a ride on Saturday. Just starting on the tuning game - back box and centre section arriving later this week I hope! Never been very impressed with "control" of standard ECU, but as it's a UK MY00 with 2 years warranty to run, I'm not prepared to do anything that voids the warranty (had some expensive experiences with my previous car - a Sunny GTIR!).

Dave

SecretAgentMan

I must be missing something here....292 hp from a TD04...at almost stock boost? Front mount and equal length manifold set aside....it's still a tad weird.



/J - Linked MY00, 300 tops with a VF24 @ 1.3 (midrange), tailing off to 1.1 at 7000.

john banks

Stephen your figures are incredibly good for the amount of boost you are running - at PE or not!

john banks

Jerry, he wrote "std turbo and fmic" but I think he meant "tmic" going by the spec on his site and all he has said before. I am puzzled too why at such low boost you get such fantastic figures. Presumably you have to lean it out and advance the ignition big time?? Why do others not achieve these results with a remap? Is it because a remap on the original ECU is so much finer?

Having said all that Jerry, UK 300 PPP with decat have run 285 BHP at PE, and a MY98 with filter and decat centre and a backbox ran 269 BHP.

What I really want to know is is Stephen's car substantially more powerful than say a well mapped Link or Unichip UK car on std turbo and TMIC at the same boost, and if so why? (apart from the manifold)

[Edited by john banks - 3/11/2002 10:57:55 AM]

StephenDone

Hi John,

Since I am continuously monitoring my car, I am running quite a lot of advance. When the weather gets hotter, I may reduce this somewhat, though I have no det/knock at the moment. Checked with stethoscope by PE too, to ensure my sensor was behaving.

As I said, I don't think that the low boost figures mean that I am not flowing that much air. It's that there are few restrictions in the path of the exhaust gases. An interesting experiment would be to log RPM, boost and MAF voltage on my car. We can then compare this with a car with less exhaust mods. I bet for a given boost pressure, I have a much higher air flow than normal.

I have a huge K&N with STI trumpet, large bore intake pipe onto the turbo, smooth Samco i/C hoses, true equal length S/S manifold, PE T75 twin dump down pipe, sports cat and back box. My engine doesn't really have any restrictions now apart from the turbo and TMIC. If anyone wants a ride, I'm happy to oblige. Just get to Maidenhead.

And yes, it's emissions legal :-) Tested it on PE's exhaust gas analyser - once hot, the cat does a great job.

Steve

StephenDone

Apologies if I said FMIC at any point. I meant TMIC - it's the standard one that I still have.

The boost pressures are nice and low, but are correct. Take a look at the wastegate duty cycles - it's only open around 60%.

Steve

john banks

All that AND emissions legal. Stunning job Stephen, I am gobsmacked.

StephenDone

Hi John,

I am sure you could get around the same power with a Link or UniChip. This is my car, so I have mapped it further than you might want to do a customers car. If Link/UniChip mappers are mapping to lower power, then it would probably be for safety. I log my car with DeltaDash frequently, so I can reprogram if I see a problem - customers wouln't do this. No probs yet, though I definitely need some new tyres & brakes.

Steve

DaveMcC

Stephen

From your first comment in this thread, am I right in thinking that Jase's car has a semi-custom map - ie started as the driveability ECU but then tweaked on the RR to match his car. Is this necessary or recommended, as presumably this adds quite a bit of cost over the "swap-out" option for the straight ECU at £150. Just how flexible is the driveability ECU if you fitted it to a standard car but then added, say, exhaust/downpipe and induction kit - would this result in it running lean at the bottom end.

Dave

StephenDone

Hi Dave,

We will be trying Jason's map on several cars - it should be the basis of the driveability remap. We just need to check whether the klean spot is present on all cars. If it is, we give the same map to everyone. If it isn't, then we have two maps - one for std induction and one for cone filters.

Cheers

Steve

Charlie H

Just to repeat markus' comments, can this be done on earlier cars including wrx's? or is it only on the 2000 models?

nom

If you look at the PE site, they can remap (and have been able to for some time) everything except for the MY99+. Presumably it was causing a few problems which solutions have now been found to, which is why there's the new hubbub - all of those of us with the iffy AE802 can change it to one of the working ones

Chris.Palmer

nom,

I was led to believe that this only because they haven't updated their web site since 1999!

The early solution was a piggy back affair - Steve's latest invention (I hope this is patetented is a completely different kettle of fish.

If I understand it correctly there are no piggybacks - the Subaru chip is modified so that it maintains nearly all the standard mapping ie the advantages of Subarus investment into cold start - off boost - altitude changes etc & just tweaks those areas of the map that require it - ie you maintain smooth runninng & fuel ecomony when cruising & the performance increase when you need it.

Am I right Steve?

Chris

ScoobySnack

and nows there's another with ..........

269BHP and 260 Lb/Ft torque..........



J