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Tuning JTD - GSR induction & Red-Dot remaps!

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Tuning JTD - GSR induction & Red-Dot remaps!

ABZSTILO

ABZSTILO

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Folks I need some help (ok ok, not that kind :rolleyes: ) as I'm trying to get to the bottom of a fault which seems to be on most (but not all) JTD Stilos that have been remapped at Red Dot..... and I'm looking for the impossible..... perhaps. Anyway, please read on:

If you have a JTD or MJET and have had the GSR induction kit fitted but have not had a remap done please post something and I'll be in touch.

Or..... have you had the Red Dot Racing remap done but have not had the GSR induction kit fitted please post something and again, I'll be in touch.

Also! Have you had your Stilo remapped elsewhere..... and have a different induction kit or the standard set up on your car? Again please post something.

I have one or two pet theories about why the 'engine fault' alarm comes up on many JTD/MJET that have been remapped/induction kits fitted and as it irritates the hell out of me I'm determined to find the cause of the problem and see it gone..... so I'm trying to pick my way through as much information as I can get from fellow diesel burners who've had their cars 'tweaked'. To play around with a famous phrase from Mr Holmes:
"It is an old maxim of mine that when you have excluded the possible and the obvious, whatever remains, however improbable or annoying , must be the cause".

Hopefully, if this topic is well replied to and folk are honest about what's going on with their cars, we will once and for all be able to figure out an answer to the engine fault spies. So please do contribute (y)
 
re: JTD - GSR induction & Red-Dot remaps!

Now im no tech but it would seem that this problem is mainly to do with changing the air flow. Perhaps a sudden difference to what the ECU is expecting over a period of time is confusing it as it tries to adjust to the new readings.
This problem is not just restricted to the Stilo JTD but similar anomalies i personally have notices in Punto MK2 Sporting and my current Stilo.
Like i think you said this is not a problem srecific to Red Dot and GSR but rather the Ecu.
The MK2 Sporting experiences erratic electrical behaviour after the fitting of and induction kit from Lambda sensors “Failing” to the Sparkplugs quickly smutting up and being rendered useless.
Have you researched into weather this is restricted to just fiat or have modern non Racing Ecu's got just too complex to handle these kind of changes.
 
re: JTD - GSR induction & Red-Dot remaps!

Abz,
As you are aware from our posts on Performance Stilo i have the Reddot Map with standard induction and experience the engine fault with no noticable drop in power. I have found that it is better (ie less often) of i turn ASR off. Now i know they are probably unrelated but i think it has made a difference. I also prefer the feel of the brakes with ASR off.

Volxstu,
the fault Abz is talking about is in relation to overboost pressure, so this one is just for the JTD/MJET because of the Turbo.
 
re: JTD - GSR induction & Red-Dot remaps!

volxstu said:
Now im no tech but it would seem that this problem is mainly to do with changing the air flow. Perhaps a sudden difference to what the ECU is expecting over a period of time is confusing it as it tries to adjust to the new readings.
Click to expand...

You're getting to where I am at the moment...... part of the answer may be to 'cheat' the sensors over the ECU. Personally I suspect the sensors are most probably the significant factor.

volxstu said:
Have you researched into weather this is restricted to just fiat or have modern non Racing Ecu's got just too complex to handle these kind of changes.
Click to expand...

Obviously the best answer is a fully mapped system which is well away from the limitations of anything OE. However, I have researched a few other cars (eg. Fabia VRs) and without exception (so far) few similar problems reported :(

Mini...... I don't have ASR so can't comment :(

I do have an idea of how to make the 'spies' go away...... hopefully sooner rather than later. We will see! As I've had no help from other fronts to resolve the faults it seems sensible to me to have a go rather than make do :D

Come on folks - more posts please. All info is good (y)
 
re: JTD - GSR induction & Red-Dot remaps!

bozzy said:
Apart from when the intercooler hose split but that's a fault that might not form part of any investigation you are conducting.
Click to expand...

Quite right - it's not what I'm looking at, although intercooler performance is something that has been suggested I look into on 'tweaked' engines :cool:
 
re: JTD - GSR induction & Red-Dot remaps!

angel remap gave me p0235 error code. Always under load between 2500-3000rpm. Then chipped uk was the same but not as bad and that was with gsr induction. Very big improvement when i changed maf sensor. No improvement after replacing egr or overboost valve.
 
re: JTD - GSR induction & Red-Dot remaps!

Have you tried cleaning your inlet manifold and stop valve. It is quite a job to get the manifold off, but they really get gummed up with the EGR soot mixed with oil and the airflow is significantly restricted into the engine. I have cleaned the stop/ air cutoff valve on mine, but have not tried the manifold yet. (Mine is not remapped and I don't get error codes) but think it is something you should try. Also clean the MAP sensor at the same time.
 
re: JTD - GSR induction & Red-Dot remaps!

Right i may be getting slightly out of my depth here but these are remarkably similar to the probs with N/A petrol engines without remaps.
It seems you are experiencing turbo Lag and i am experiencing flat spots at the rev ranges where the most difference from standard is made.
I can only explain this by fault of the ECU not understanding what this extra information is at this point and the advanced timing is going out of sink of the fuelling. (I dont have a clue what this means as i said before im not too up on how engines work i am just deriving from facts) anyway this could explain dirty sparks in my old Punto. One would imagin that if you are trying to ignite nothing then you would get excess carbon build up. (another thing that i just assume)
Oh and this maybe useful or just confuse matters even more. I have tried to Map my car but it ran less HP than when it was standard and it turns out that the Lambda sensor had started to go seemingly the instant the map was put on so i put it back standard as i had to have the work done on warrenty.
One more thing for my 1.6 fiat dont reackon that the Torque and HP pass at 5381 Revs or whatever it is supposed to be we disregarded this as wrong but :confused:.
 
re: JTD - GSR induction & Red-Dot remaps!

john55 said:
Have you tried cleaning your inlet manifold and stop valve. It is quite a job to get the manifold off, but they really get gummed up with the EGR soot mixed with oil and the airflow is significantly restricted into the engine. I have cleaned the stop/ air cutoff valve on mine, but have not tried the manifold yet. (Mine is not remapped and I don't get error codes) but think it is something you should try. Also clean the MAP sensor at the same time.
Click to expand...

what do you class as the stop valve?
 
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