Vauxhall insignia won't boost properly and smokes after map

[Roastyduck]

Had my car mapped previously, dodgy generic map, had someone who's very reputable do a proper map and actually changed more than 3 things so much so I could feel the difference between the maps like night and day.

Now it's supposed to boost to 27.5psi, I'm getting 22.4 max I'm certain it was boosting to 24 on the previous map.

Checked for boost leaks in the hoses even changing boost pipes, changed boost solenoid and removed and cleaned egr.

Egr was previously mapped out by the 1st map and 2nd mapper turned it back on.

My opcom and Chinese obd reader show 22.48psi dead and no fluctuations once full throttle.

Hitting 4k rpm it dumps a metric ton of black smoke until redline/gear change where it didn't smoke other than normal diesel smoke before. Stock exhaust with dpf still. I suspect the cars fueling for the extra boost but not getting the boost it needs so just smoking it all.

Could this be the egr being turned back on or map being bad?

smoke video: https://youtu.be/aFVZSBL_6s4

Edited by Roastyduck on Monday 2nd December 20:15

[paintman]

Be an idea to raise it with the chap who did the latest map.
Might be able to shed light on what it could be of all the changes you say he did.

[Jazoli]

I’d be inclined to put it back to standard and stop messing with it, why was the EGR mapped out in the first place?

[Roastyduck]

bloke i had it mapped by has said he can turn the fueling down but it doesnt change the fact its now boosting at stock boost when it almost certainly was above that before.

[Roastyduck]

Jazoli said:

I’d be inclined to put it back to standard and stop messing with it, why was the EGR mapped out in the first place?

defeats the purpose of having it down in the first place, i had a type r before this and changed due to the fact i was using insane fuel every day for work but i still wanted something nippy, having 138bhp sucked! i honestly have no clue, it was a kess download A map type guy, i learnt my lesson not to do that again!

[Jazoli]

Roastyduck said:

defeats the purpose of having it down in the first place, i had a type r before this and changed due to the fact i was using insane fuel every day for work but i still wanted something nippy, having 138bhp sucked! i honestly have no clue, it was a kess download A map type guy, i learnt my lesson not to do that again!

It doesn't, it means you bought the wrong car to replace your type r and are now trying to extract more performance from it with the usual results using aftermarket maps, there's plenty of economical diesels out there that also have over 200bhp to start with, if as you say you have no clue maybe trying to 'tune' an Insignia isn't the best idea in the first place.

Edited by Jazoli on Monday 2nd December 20:32

[Roastyduck]

Jazoli said:

It doesn't, it means you bought the wrong car to replace your type r and are now trying to extract more performance from it with the usual results using aftermarket maps, there's plenty of economical diesels out there that also have over 200bhp to start with, if as you say you have no clue maybe trying to 'tune' an Insignia isn't the best idea in the first place.

Edited by Jazoli on Monday 2nd December 20:32

so youre saying tuning an insignia for an extra 60bhp is pointless? name a 3k car with 200bhp, 0 road tax, cheap to insure, oodles of boot space, able to tow and comfortable whilst still being reliable. the tuning guy for the insignia isnt some knob off the street, hes someone who writes the tunes himself rather than buying from ebay/celtic, the previous map added power and no issues except it clearly was nowhere near the 195hp he claimed, lucky if it was 160bhp. this map is far superior however i have gained an issue which is fixable but im unsure what the cause could be if theres anything ive overlooked.

my no clue part was to the egr being turned off originally.

Edited by Roastyduck on Monday 2nd December 20:55

[Scrump]

Was the black smoke there from when the latest map was first installed or did it start some time later?

[InitialDave]

My instinctive reaction is that the previous tuner did some kind of workaround to exceed the standard boost, which the later tuner has partially overwritten but missed an element of somewhere.

Did he "just" remap it, or take it back to stock, and then map it afresh from a known good baseline?

This is assuming nothing physical is wrong. Friend had an Audi years ago which was exhibiting weird behaviour, turned out the previous owner had fitted a one way valve in the boost control pipe the wrong way round.

[Roastyduck]

Scrump said:

Was the black smoke there from when the latest map was first installed or did it start some time later?

i noticed it about a week after the new map was put on so maybe i wasnt paying attention, i didnt suspect anything was wrong as it felt a lot faster, i only checked boost when i was logging to determine the fuel/boost. weve been chatting trying to diagnose as hes almost certain it shouldnt be the map (he has a 138bhp hes running over 256hp on self tuned) and everyone thats used him has raved at his work which is why im pulling towards is it an issue with the car, more so that he has told me outright he has mapped to 27psi boost and its not even getting close its still giving stock boost.

Edited by Roastyduck on Monday 2nd December 21:10

[Roastyduck]

InitialDave said:

My instinctive reaction is that the previous tuner did some kind of workaround to exceed the standard boost, which the later tuner has partially overwritten but missed an element of somewhere.

Did he "just" remap it, or take it back to stock, and then map it afresh from a known good baseline?

This is assuming nothing physical is wrong. Friend had an Audi years ago which was exhibiting weird behaviour, turned out the previous owner had fitted a one way valve in the boost control pipe the wrong way round.

he said he put it back to stock and it took a while to undo the fkery the previous mapper put on there,he had it for a couple of hours, the previous mapper wont give me my stock file which leads me to believe he didnt keep it. it was stock psi before map 1, it was im certain 24-26psi on map #1 and on map#2 im now at stock 22psi boost.

Edited by Roastyduck on Monday 2nd December 21:13

[E-bmw]

Roastyduck said:

Jazoli said:

It doesn't, it means you bought the wrong car to replace your type r and are now trying to extract more performance from it with the usual results using aftermarket maps, there's plenty of economical diesels out there that also have over 200bhp to start with, if as you say you have no clue maybe trying to 'tune' an Insignia isn't the best idea in the first place.

Edited by Jazoli on Monday 2nd December 20:32

so youre saying tuning an insignia for an extra 60bhp is pointless? name a 3k car with 200bhp, 0 road tax, cheap to insure,

Now you are just adding more of the info you should have stated in the first instance in a vain attempt to prove you right.

Obviously there are no 0 tax 200 bhp cars that are cheap to insure.

I'll say now that I doubt it would be so cheap to insure if you told the insurance company that you had the car mapped & the EGR mapped out thought!

You still shouldn't be mapping a diesel for power anyway, as that is not what they are good at and it will almost always cause issues & guess what?

It has!

The only answer is to get it put back to stock.

[Roastyduck]

My egr isn't mapped out and the insurance know it's mapped, I'm a train driver so my insurance is far cheaper anyway.

Mapping diesels does not inherently add problems..it had zero issues on the previous map so explain that one?

They aren't made for power no, but extracting extra power out of it is a bonus that we have the ability to do, you seem to want to blame diesels and mapping for being the issue because you shouldn't map a diesel but I'm not sure what evidence you have to show this is fact as I'm fairly certain there is at least 1000 mapped diesels currently driving around at this precise moment happy with zero issues.

The extra info has no relevance to this post why should I have added it? The purpose of the car doesn't cause a fault.

You seem to have an issue with mapping? My bikes mapped too..

Edited by Roastyduck on Tuesday 3rd December 10:00

[E-bmw]

Roastyduck said:

Mapping diesels does not inherently add problems..it had zero issues on the previous map so explain that one?

Err, oh, that is a difficult one...... The first one was better perhaps?

Roastyduck said:

You seem to have an issue with mapping?

I don't have an issue with mapping, clearly your car may well do on it's current map though.

Either that or there is another problem that the map could well be masking, either way, the only way you will get to the bottom of it is to get it back to stock & then see what is happening.