Lotus Sport ECU Upgrade Problems

<Archived> Even supercars have their flaws..
Snapper
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Lotus Sport ECU Upgrade Problems

Post by Snapper » Tue Feb 13, 2007 8:04 pm

Just had the Lotus Sport ECU Upgraded on my Series 2 Exige which drops the cam change point by about 500rpm.

But I have now got the Engine management light coming on. Took it back to the dealers (Who are very good) and they spoke to Lotus about the issue, They said that they just need to clear the ECU fault code and it should be ok.

They did this, and no sooner had I got home parker the car up. Restarted it and the Engine management light has come on again.

It also seems to be getting through fuel rather quickly.

Anyone else had this problem? I can't keep returning to the dealers to get the fault cleared because I will never get home.

(The car is a 04 plate S2 Exige with a Stage 2 Lotus sports Exhaust and an ITG kit which I informed Russel at Lotus Sport of when they recommended this upgrade. ).

Any Advice would be most helpful

tim_marra
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Re: Lotus Sport ECU Upgrade Problems

Post by tim_marra » Tue Feb 13, 2007 9:11 pm

I am seriously considering this mod at the mo', & will be keen to know how you get on.

I've had a spate of MIL lights in the past, some just corrected themselves (no induction kit or exhaust upgrade either).

I'd be very surprised if Lotus endorse any aftermarket kit which is not supplied direct from the factory (eg your induction kit). On the LCI website all attempts at gaining approval of non-Lotus stuff fail miserably (official approval that is).

Do you think its a good investment otherwise?

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Re: Lotus Sport ECU Upgrade Problems

Post by evo_ufo » Wed Feb 14, 2007 7:23 am

Hi, I'm also running ITG induction, but have the Quicksilver Tracksport exhaust. Previously had the Stage 2.

I've had the MIL light come on twice. Once before the ECU swap after a doze of Morrisons petrol (emergency). This cleared itself after the car was back on Optimax.

Also had the light a few weeks after fitting the new ECU. Again I put this down to some dodgy fuel and it cleared once it was back on Shell. Sorry haven't had the codes read so can't tell you any more.

Hasn't recurred.

Snapper
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Re: Lotus Sport ECU Upgrade Problems

Post by Snapper » Wed Feb 14, 2007 9:13 am

I don't use cheap fuel in the car - I have been told that BP is good fuel and that is what I use. The car has not been refueled since the upgrade and the light was not there before the upgrade.

Any other advice welcome

elisesport
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Re: Lotus Sport ECU Upgrade Problems

Post by elisesport » Wed Feb 14, 2007 2:48 pm

As posted on SELOC this is the first instance I've heard of an ECU upgrade not being greeted with whoops of joy.

I have ITG/Stage 2/Sports Cat and have never had the MIL light on either before or after the reflash.

Suggest you contact a someone who knows more than a basic dealer ie Simon at Brooke Kensington if you can't get hold of Russell in Lotus Motorsport direct.

I strongly suspect you have issues other than the ECU upgrade.

The upgrade itself is excellent

Snapper
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Re: Lotus Sport ECU Upgrade Problems

Post by Snapper » Wed Feb 14, 2007 3:10 pm


I strongly suspect you have issues other than the ECU upgrade.
The car was perfectly fine before the ecu was changed

Snapper
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Re: Lotus Sport ECU Upgrade Problems

Post by Snapper » Tue Feb 20, 2007 12:47 am

My Dealers are going to refit the troubled ECU and remove the ITG and see if that improves things. As per that advice of Lotus Motor Sport.

I am not convinced that it will. Even if the enigine warning light issues are solved, I await to be proved wrong that the ecu upgrade will improve the car from what I have seen of it so far and give me added improvement that has been suggested. I would lay money on the cars accleration curve just being a progressive one without the second came extra kick in. If it is the case I would concider it to be a down grade.

I have the feeling that I will be paying the dealership to put the car back to where it was before I started the ecu upgrade at the end of the day. Not that I have a problem with that because the dealership have been very helpful through out so far. Even sent a mechanic out to my house to reset the ecu. I have no issues with any of the work the dealership has and will be doing. I just don't think this ECU upgrade is all it is cracked up to be.

I am just disapointed with Lotus Motor Sport not letting me know that there has been issues with this ecu upgrade at the begining when they knew I had an ITG & Lotus Stage 2 exhaust system.

I know some people are very happy with this upgrade and some people are not judging from some of the messages that I have received.

I will keep you informed as to what happens. But I don't think it will be a happy ending from my point of view.

magicman
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Re: Lotus Sport ECU Upgrade Problems

Post by magicman » Tue Feb 20, 2007 4:53 pm

I wonder if the Emerald ECU will help? (when it comes out) At least that will be mapable to your set up.

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Re: Lotus Sport ECU Upgrade Problems

Post by evo_ufo » Tue Feb 20, 2007 10:14 pm

For what its worth I'm still delighted with the new ECU. Sorry to hear you're still having problems Snapper.

Snapper
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Re: Lotus Sport ECU Upgrade Problems

Post by Snapper » Sat Feb 24, 2007 7:45 pm

Thanks to everyone on Exiges.com & SELOC who have been so helpful in trying to sort this problems out. Things are still not sorted out yet.

But Just to keep people updated most of my posts have been on SELOC:
http://forums.seloc.org/viewthread.php? ... 590&page=1

But here is what has been said:

Postings:

SNAPPER
=====

A BIG THANKS to AlunR for taking me for a Spin in his S2 Exige with the ECU Upgrade. It feels alot better than what I have got with the Upgraded ECU . There is a definite change point in the second cam point at 5700-5800. Which should be even more noticeable with a Lotus Stage 2 sports Exhaust

It is an upgrade which I think is worth the money if you get a working ECU that does not throw up errors all the time.

I look forward to seeing Mr Demon/David for a quick spin in his Upgraded ECU Exige and making sure that the car is the same with the ITG kit and Sports Exhaust in the setup so I can go back to Lotus with the findings and push them into sorting it out.

Thanks for everyones replys and messages so far and if anyone has any ideas please let me know.


Grinzzz
=====

Glad to hear you're getting somewhere, at least you know how it should perform now and can go ahead knowing its what you want. Sounds like yours wasnt going on to second cam at all then?

SNAPPER
======

Hopefully get to go for a spin in Mr Demons car and make sure that performs the same and then there is a good chance that it is not my car and it is the Lotus Motorsport ECU, Because if Mr Demons car works fine and is the same as Alan's with an ITG and Sport Exhaust there is no reason why mine shouldn't work as far as I can see. Seeing that My car was fine previously this convinces me more that it is not my car at fault.

If Lotus won't send out a replacement ECU to try, I will demand my old one back and put my car back to how it was before going down this route. Mind you it's not far off the market picking up to start selling sports car. So If it is not worth going down the upgrade route with my car I might sell it on once I know every thing is back to how it was and look for some thing else instead.

Because if this is what happens at stage 1 of a 3 part upgrade project of off the shelf items from Lotus Motorsport I can't see that it's worth continuing.

Once I have been in Mr Demon's car I will be in a position to go back to Lotus Motor Sport with a good case of this ITG being the issue, which is what they maintain is rubbish because I have seen for myself that it works.


ryallm
====

I am very happy with my upgraded ECU, in fact the more I drive it, the more I like the far more linear power delivery, and the fact you don't have to rev the nuts off it to avoid dropping off cam when changing up a gear. Sounds like you have been very unlucky, so hope you get it sorted ok.

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