re: JTD - GSR induction & Red-Dot remaps!

Well they just called to say they can't find a fault. They said that they can see a fault registered in the ECU which shows air-con low message and this may be the problem.

They said that only once did they see a fault like mine (P0235 at idle) and that car too had underperforming air-con. Once it was regassed it never occure again??

re: JTD - GSR induction & Red-Dot remaps!

I remember their being a technical note / fix from Fiat about this low aircon warning problem. It does not just happen to remapped cars.

re: JTD - GSR induction & Red-Dot remaps!

I am not convinced re-mapping has anything to do with these errors. Like I said, these happened to me pre & post the remap. Unless somebody can convince me of course.

re: JTD - GSR induction & Red-Dot remaps!

bozzy said:

I am not convinced re-mapping has anything to do with these errors. Like I said, these happened to me pre & post the remap. Unless somebody can convince me of course.

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Exactly - nowt to do with it..... had enough wee 'tickles' pre-remap to know the difference!!

re: JTD - GSR induction & Red-Dot remaps!

Just got back and all is well. Can't believe how cold the car is now the aircon has been re-gassed. Got talking to a MW owner whose car was in for engine light. He didn't know what a remap was so couldn't get any info from him.

However the tech did seem quite knowledgeable and refused to swap any sensors or put he blame on anything particular until he was certain he had found the fault. Things might be looking up for this dealer.

Re: Update

ABZSTILO said:

I removed the MAF sensor from its housing in the GSR kit last night and 'plugged' the gap (wine cork as it happens ) but left it connected then bunged it into it's old housing and chucked some layers of gauze over the 'induction' end of the pipe (ie - the one I pointed forwards) to disturb the airflow over the sensor.

The old MAF pipe with sensor back in it was then loosely fixed "out of the way".

No engine faults on the way into work this morning - no matter how I tried to make them happen......... the return trip this evening could be interesting.

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So; if I follow this correctly, you've put the MAF back into it's correct position but with minimal air filtering. In other words, the problem is created by moving the MAF away from its original position (if I've followed that correctly)

On that basis, I'd have thought simply disconnecting the MAF would also stop the engine light coming on :chin:

re: JTD - GSR induction & Red-Dot remaps!

bozzy said:

Things might be looking up for this dealer.

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Trust you Bozzy - after all these years - you're now on good terms with your dealer










.....and just about to sell your car

re: JTD - GSR induction & Red-Dot remaps!

The irony of it all. Gotta laugh

Re: Update

Argonought said:

So; if I follow this correctly, you've put the MAF back into it's correct position but with minimal air filtering. In other words, the problem is created by moving the MAF away from its original position (if I've followed that correctly)

On that basis, I'd have thought simply disconnecting the MAF would also stop the engine light coming on :chin:

Click to expand...

No, I'll try and post up a picture of what I mean later on.

Currently the MAF is sitting in it's housing but is suspended somewhere near the battery tray - so completely disassociated from the induction. Unplugging the MAF completely (apparently) forces a 'default' series of readings to the ECU.
Now when my MAF was faulty that was fine, disconnect it and the car ran fine but the car ran up error codes. However, the MAF is in perfect shape now it's been replaced so it's better that it remains in place to provide some kind of reading. Maybe

Concrete test will be the run home tonight - oh, and it's MOT time on Monday :bang: Doh

Re: Update

ABZSTILO said:

Currently the MAF is sitting in it's housing but is suspended somewhere near the battery tray - so completely disassociated from the induction.

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Wow! I wonder what the ECU makes of that

"Everything looking good but we've got NO airflow Houston!"

I wouldn't mind betting the ECU has stored an error code for you and has dropped the MAF out of the system

re: JTD - GSR induction & Red-Dot remaps!

It's possible..... but there is airflow passing over the sensor.... I made damn sure of that

In theory (well, my theory at least) it shouldn't matter too much where the airflow is coming from so long as it provides a reasonable value to the ECU...... in theory. Now that's fine when the car is moving as you have flow over the sensor but less 'fine' when it's stationary and the induction alone would be pulling air over the sensor in a normal situation.

On the 2.4 Stilo I know Red had some success re-orientating the MAF until the engine fault disappeared but my initial trials of that solution on my JTD were unsuccessful - although it would arguably be a far more elegant/simple solution than what I've currently got under the bonnet!

Post MOT I'll have the car back up to my local garage (who don't do MOTs sadly ) and run the diagnostics to see what we get

In the meantime.... it's running fine..... honest :worship:

re: JTD - GSR induction & Red-Dot remaps!

I reckon (in a very roundabout way) you've found the answer

If the engine runs pretty good with the MAF basically returning close to nonsense info to the ECU (the relationship between car speed and actual air entering the engine is very poor indeed ) then I'd say it's a virtual certainty the ECU has locked the MAF out of the system i.e is running on predicted values only.

Now consider, the MAF in it's prober location (measuring true air-stream) then it seems quite likely when the MAF reports very high volume (why it does that is the crux of the problem) that the ECU makes a snap decision that the info is wrong and generates an engine warning light.

Interestingly, the error reported is boost related rather than a declaration that the MAF is faulty (as you most likely have now) :chin:

re: JTD - GSR induction & Red-Dot remaps!

Car was run up on diagnostics today (by chance) and no faults/error codes at all - nada - zilch - it's clean

Surprised me though, I was expecting something to be there

However, MAF has been put back into the GSR kit until after the MOT (just in case of any "spies") and on the way home...... yup...... engine fault light came on (then immediately went out) and engine hesitated again...... so it really does look like the MAF doesn't like the induction kit and/or the remap too much

It's not a huge hassle, just a pain in the rectum

re: JTD - GSR induction & Red-Dot remaps!

Argonought said:

...then I'd say it's a virtual certainty the ECU has locked the MAF out of the system i.e is running on predicted values only.

Click to expand...

That's me wrong again then

As you say that's rather puzzling


Hamish, any chance of a picture of how the MAF sensor is installed in the GSR kit (I've never seen one)

re: JTD - GSR induction & Red-Dot remaps!

Haven't been on for a few days so just read the whole thread and caught up on things.

So Ham, from your experiment what what you advise those of us with remaps but standard induction? Just disconnect the MAF completely?

re: JTD - GSR induction & Red-Dot remaps!

minimad99 said:

So Ham, from your experiment what what you advise those of us with remaps but standard induction? Just disconnect the MAF completely?

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Haven't you followed the tread or was that a mistype

Remap should function fine with standard induction (as both bozzy and I reported)

I gather it's only an issue with the GSR induction kit :chin:

re: JTD - GSR induction & Red-Dot remaps!

I have remaped my Stilo 1.9JTD to 163,1HP and 370Nm and Im thinkig about GSR Induction Kit, but after reading this Im little confused If I will buy it, because I don't want Induction kit which will give me error, now I live without errors so I don't want it...
So is there any better induction kit than GSR Induction Kit?

re: JTD - GSR induction & Red-Dot remaps!

minimad99 said:

So Ham, from your experiment what what you advise those of us with remaps but standard induction? Just disconnect the MAF completely?

Click to expand...

I wouldn't disconnect it completely as the lack of a reading will create a default setting on the ECU which might negate the benefits of the remap and produce errors, so my advice would be to 'play' as I have done and see what happens.

Note - at no point in my recent endeavours has the MAF been disconnected from the loom - it's still providing info to the ECU but in a different location away from the induction per se. Effectively I'm trying to create an artificial induction with the sole purpose of fooling the MAF which I increasingly believe is the principal culprit for my problems.

I need to play around a bit more with my 'experiments' to see if this is a definative answer and as I do not run standard induction it would be wrong for me to say my findings are right for every car On a standard induction the possibilities for 'tweaking' the MAF are, sadly, far fewer

re: JTD - GSR induction & Red-Dot remaps!

Argonought said:

I gather it's only an issue with the GSR induction kit :chin:

Click to expand...

I'm thinking that perhaps a re-positioning of the MAF (or partial shrouding of the MAF perhaps) in the GSR kit could be part of the answer - difficult thing is where to put it and how to do it

Without a spare induction kit to play with I'll be damned if I'm disecting and modifying mine up to see if there's an answer there!!

re: JTD - GSR induction & Red-Dot remaps!

_Dejan_ said:

So is there any better induction kit than GSR Induction Kit?

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Personally, I don't believe there is But with 163bhp I'm confident your car would do more with a GSR fitted - but that's your call.

However, it would be very interesting indeed to make a hybrid between the GSR kit and the standard induction. I'll be emailing Peter at GSR tonight with an idea that may be worth considering. Although not as elegant as the current GSR product it may do the same job.