Flat spot in third.

[Sparkie]

So the question is what produces a flat spot.
Seems to have just started in third between say 3500 and 4500 rpm there is a total lack of pull as if boost very low.
Then power comes on again.
I know it's an old car with 150k on it but has always been perfect.
Amy thoughts?


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[Andrewwright]

Have same issue and now it's all become clear....clutch has started to slip from about 3.2k or when turbo hits its peak torque I guess.
Couple of weeks it's been having this flat spot in 3/4/5/6 so haven't pushed it to much and then couple of days ago she slipped. I just hope I don't have to replace the flywheel as well.
Will go smf if I do replace it for longevity.
You may not have the same issue btw I'm just saying what I had over the past few weeks and end result

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[Sparkie]

Have same issue and now it's all become clear....clutch has started to slip from about 3.2k or when turbo hits its peak torque I guess.
Couple of weeks it's been having this flat spot in 3/4/5/6 so haven't pushed it to much and then couple of days ago she slipped. I just hope I don't have to replace the flywheel as well.
Will go smf if I do replace it for longevity.
You may not have the same issue btw I'm just saying what I had over the past few weeks and end result

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Cheers Andrew good to know but not so good for your pocket.
At least you don't pay for labour. Biggest cost out there.


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[Andrewwright]

Reason I got this car, so I don't have to pay labour. Parts are costly at best so labour is a big no no and it really kills me I know so much about coding but know nothing about mapping all that time lost learning java lol could of been making some silly money buy now .

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[Sparkie]

Reason I got this car, so I don't have to pay labour. Parts are costly at best so labour is a big no no and it really kills me I know so much about coding but know nothing about mapping all that time lost learning java lol could of been making some silly money buy now .

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Still time for that. Digital world has gone mad.


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[Andrewwright]

A company called quantum tuning seems to be the school/franchise side of tuning in the UK. From what I have read over the past few hrs they have many companies under there belt here and abroad. But I love github and there is plenty of info on there. Check sum seemed to be an issue but that's history now so does seem possible to do but from what I have written above...there won't be money to be made on this. To many like minded people already lol.
Bragging rights though...be like 1000 points haha

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[Sparkie]

A company called quantum tuning seems to be the school/franchise side of tuning in the UK. From what I have read over the past few hrs they have many companies under there belt here and abroad. But I love github and there is plenty of info on there. Check sum seemed to be an issue but that's history now so does seem possible to do but from what I have written above...there won't be money to be made on this. To many like minded people already lol.
Bragging rights though...be like 1000 points haha

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Think a buddy had quantum do his smoky BMW.


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[Andrewwright]

There is a big list of companies linked to them. They don't just do the generic maps either.

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[Sparkie]

There is a big list of companies linked to them. They don't just do the generic maps either.

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Yup the guy said it was one of two stage ones. His was a plus! Very la di da.
I'll check is was them.
Said the guy tweeted it himself. Don't know how much I believe.
It's quicker. But I don't think he has the figures the guy told him he achieved.
I'll find out more.


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[Andrewwright]

Little link for you.

http://www.quantumdealer.co.uk/become-quantum-tuning-dealer.aspx

Just shows how much a map is really worth.

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[mty12345]

I wouldn't waste your time or money mate. Anyone can upload a "stage 1" map to a car with the right cable and software..... That's a completely different thing to actually mapping one for real.

Mapping one for real takes extensive knowledge of both engines and the bosch ME7.5 ECU , (in the case of our cars) niether of which they would teach you on their "training" courses.

 

[mty12345]

So the question is what produces a flat spot.
Seems to have just started in third between say 3500 and 4500 rpm there is a total lack of pull as if boost very low.
Then power comes on again.
I know it's an old car with 150k on it but has always been perfect.
Amy thoughts?


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If it's only in 3rd that's quite strange........ the only thing i can really suggest is to run some logs to see whats going on.

 

[Andrewwright]

I wouldn't waste your time or money mate. Anyone can upload a "stage 1" map to a car with the right cable and software..... That's a completely different thing to actually mapping one for real.

Mapping one for real takes extensive knowledge of both engines and the bosch ME7.5 ECU , (in the case of our cars) niether of which they would teach you on their "training" courses.

They seem to be part or host to

http://www.alientech-tools.com/en/academy/educational/

Either way I won't be taking part in any of this.
I think these are offering Joe blogs the chance to be a "mapper".
And setting the price of £250-£300 per map is very interesting.

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[Sparkie]

If it's only in 3rd that's quite strange........ the only thing i can really suggest is to run some logs to see whats going on.

Cheers. Will look into it further.


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[rogercupra]

slightly off topic maybe?, I think my clutch slips once warmed up as if I don't accelerate too hard it boosts normal but if I do accelerate hard then it kind of looses power then comes back, mine boosts to 15psi but drops to either 5 or 10.

 

[Andrewwright]

What car do you Have again? Cupra or cupra r? 5psi sounds like limp..or leak.
Today on the way home no clutch slip at all, only difference is weather is a lot cooler,may play a part I guess but still needs doing either way.
Mine spikes to 21 and sits 16/17psi till I change gear.
If you're psi is dropping off then there is a leak.
Mine is a ko3 cupra btw.

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[rogercupra]

its a Cupra r , its has been mapped to 286 and 330 torque, it only does it if I don't drive sensibly, it had a 6 paddle clutch on it when I first got it but as I sat In a lot of traffic to and from work I couldn't get on with it so had the original one put back on.

 

[Andrewwright]

330 torque is the issue and why the 6 paddle clutch was good for putting that in it's place.
A new stock clutch won't last long with that amount of torque.
Also be very careful as 300ft/lb Will bends rods.

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[mty12345]

Yeah i agree with andrew on both counts. 330ft/lb is way over the rating of a standard clutch and well past the safe limit of standard rods too.

 

[rogercupra]

I am planning on a new clutch asap as it does boost around 15 psi but I don't want to push my luck, I still have the paddle clutch but I really want something that I can control in heavy traffic