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Discussion Starter · #1 ·
I had my car remaped some time ago, the car was away for a couple of weeks as I was also having other work done so didn't really get a before and after comparison. Anyway, a mate of mine recently brought a 1.8T same spec as my own, so as you do started to make some comparisons (race!), couldn't lose him, gutted, just spent ?400 on a 195bhp remap. Since then the car has been on the rolling road and VAG COM, it's producing 154bhp, not good. The graph (boost) I was given shows the requested to be as a remaped car should be but the actual is only half of that. Suggestions were to replace the N75 valve (came up as an error on VAG COM) and if this didn't work a further investigation would be needed. I have repalced the N75, no change.

Has anyone else exprieneced similar problems or know of a solution to get my power to where it should be? Any help would be greatly appreciated.
 

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Silly question, but do you trust them to have actually done the remap?

Usually the VAG cars RR a bit higher than standard anyway, so 154bhp might well be exactly what it left the factory with!

?100 per bhp sounds extortionate to me [:D]
 

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Discussion Starter · #3 ·
yep a ?100 per bhp isn't quite what I was after!!!

Since the remap I have taken the car to a different company for the RR and remap. My first suspicion was that the remap was not successful or I had been conned, but it was confirmed that the remap is their and is requesting more power but the car cannot deliver due to an engine fault. After replacing the N75 other than paying someone a load of cash I don't know what to do with it!
 

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Why dont you take it back to where you got it remaped the first
time.Let them sort it out afterall you have shelled out for the upgrade[:^)]
 

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Discussion Starter · #5 ·
Good point 8Ball. I'm really not confident with these guys, to be honest they seem incompetent and if I knew now what I knew then I wouldn't have let them touch my car. Best I sort it myself by the cheapest means possible.
 

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So what happened when you took it to the second place for the remap,
did they just have a look to see if it was there or install their own
software and it still didnt work?
 

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Who's map have you got?

195bhp seems very low for an AUM engine. You should be seeing around 212bhp from most of the reputable tuners.
 

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Discussion Starter · #8 ·
It was remaped by EMS aka OEMparts in Norwich, they state 195bhp as a minimum ouput to be gained, possibly more apparentley. Really wish I had been revo'd[:(]
 

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EMS / OEM Parts have a good reputation on here so I can't see you having many problems approaching them.

Who's map are they using?
 

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If it was Revo the same would've happened, as its requesting the high boost its definately a mechanical problem. Theres so much different things it could be though. You really need to get a forum member to do a few of logs on your car. Usefull logs would be

airflow in g/s.

boost - actual vs. requested.

for a start.

It could be anything, dead maf, map, faulty actuator...
 

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Discussion Starter · #11 ·
I am unsure as to who's map they use, my relationship with them hasn't been to succesful with them so far. Products great, but after sales customer service extremly poor. Was quite excited to find a local VW specialist for parts servicing etc. one service later and I will not be going back.
 

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Discussion Starter · #12 ·
Logs recorded at second place

17608 - Boost pressure Control Valve (N249): Mechanical Malfunction - replaced N75 valve still no joy

17705 - Pressure drop between turbo and throttle valve check (D.V) - I have a forge D.V (cleared on second log)

16795 - Secondary air inyection system: incorrect flow detected - (cleared on second log)

17544 - fuel trim bank 1 (add) : system to lean - (cleared on second log)

17978 - engine start blocked by immobiliser intermmitent - (cleared on second log)

I know it's the car and not the remap but surely after my remap it should have all been checked and I should not have been sent away with 154 instead of 195 bhp!!

8Ball -The second place only RR'd and VAG COM'd the car to inspect current s/w not to re-flash
 

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Looks like you have a faulty N249 valve.

If you have a DBW car then this controls vacuum pressure to the dv.It
sits at the front of the engine bay under the perforated plastic shield
that crosses over the dip stick.

Replace this valve and you should be ok. First though check
the vacuum hoses on it as one of them may have simply perished and need
replacing.

Edit

The n249 is number 17 on this diagram

Posted Image
 

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Looks like you have a faulty N249 valve.
If you have a DBW car then this controls vacuum pressure to the dv.It sits at the front of the engine bay under the perforated plastic shield that crosses over the dip stick.
Replace this valve and you should be ok. First though check the vacuum hoses on it as one of them may have simply perished and need replacing.

Edit
The n249 is number 17 on this diagram

Posted Image
Was about to say this after seeing the codes,

I did have a look for the part number and price on etos but couldn't find it. I'm sure Simon (20valve) will be able to help out.
 

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Discussion Starter · #15 ·
Cheers guys, I will take a trip to the stealers and get myslelf one and see how it goes.
 

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check the vacuum hoses on it first to be on the safe side.save yourself some cash if its just a broken hose.
 

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Who's map have you got?
195bhp seems very low for an AUM engine. You should be seeing around 212bhp from most of the reputable tuners.
i take it you saw my 'got dyno'd today' post [;)]

yes, you should be seeing around 205-212ish on a AUM. let us no how it goes mate.
 

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The lean code may indicate that you have a MAF or hose leak somewhere so I would investigate that too.

On a Revo'd DBW a quick test of the MAF is to try the car with it unplugged it will throw a few codes but if the car run significantly better with the ecu purely using the MAP sensor and O2 sensor then your MAF is screwed. Not recomended to run it any length of time like it, but it is a great quick check of the MAF.

Paul
 

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Logs recorded at second place

17608 - Boost pressure Control Valve (N249): Mechanical Malfunction - replaced N75 valve still no joy

17705 - Pressure drop between turbo and throttle valve check (D.V) - I have a forge D.V (cleared on second log)

16795 - Secondary air inyection system: incorrect flow detected - (cleared on second log)

17544 - fuel trim bank 1 (add) : system to lean - (cleared on second log)

17978 - engine start blocked by immobiliser intermmitent - (cleared on second log)

I know it's the car and not the remap but surely after my remap it should have all been checked and I should not have been sent away with 154 instead of 195 bhp!!

8Ball -The second place only RR'd and VAG COM'd the car to inspect current s/w not to re-flash
start with the MAF and DV... with those logged faults
 
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