Hi folks,
So about 10 days after having my res delete fitted, the car had some issues with misfiring when giving it wide open throttle.
Took it to the garage (warranty) and as expected, I had a cylinder misfire on 1. They replaced all 4 coils (apparently) and I also asked for 4 new NGK plugs too. This was billed accordingly and the receipt clearly shows 4 coils and 4 plugs.
Now I always check the garages work to keep them honest and I suspect that only 2 coils have been changed. 2 physically look brand new and 2 look old. This is quite obvious due to the brightness of the lettering on 2 of the coils. Sadly the numbers on the coils don't really give me timestamps etc so I will be taking the car in to discuss. I will also pull a plug this weekend and check to see how new these are looking.
Regardless of the above, I am almost certain the car isn't pulling as well as before. I tried my best to time a 0-60 on the lap timer function and got 3 pretty quick times.
4.5, 4.3, and a 4.5 again. So in terms of 0-60 we are looking quite well but I just feel the car isn't moving that quick after 60 and it seems to be taking a while to hit redline in 3rd gear. Perhaps I have just gotten used to the power now but it honestly feels like the car was running a stage 1 remap and the fault code reader work / diagnostics the garage has done has removed this.
Before I take the car back to the garage to potentially tear a strip of them for not doing the job I paid for, is there anything specific I should be asking / looking for with the symptoms described above? I am not sure if this is of any benefit, but after the res delete, the car pops really frequently when coming off throttle and revving. I actually don't mind it as it's only a second ish and sounds pretty cool, but there seems to be a mixed bag of people saying they don't get exaggerated popping, and some that do. When the coil was nearly dead, I was getting popping on throttle which is when I knew something was about to die. I tried overtaking someone and the car went into limp mode and the EML came on.
After the garage did their work, I can confirm the issue with popping on boost and EML etc have indeed gone away. I just can't help but feel I've got about a 20% ish power loss!
I've stuck some injector cleaner in too but I am not expecting much of a return on this. Could it be that the plug on cylinder 1 has become fouled due to the failing coil and running rich? And if the garage have been extra naughty and not replaced the plugs then that could be the answer? I will be checking though but just looking for ideas. Or I'm going mad...
Thanks in advance!
So about 10 days after having my res delete fitted, the car had some issues with misfiring when giving it wide open throttle.
Took it to the garage (warranty) and as expected, I had a cylinder misfire on 1. They replaced all 4 coils (apparently) and I also asked for 4 new NGK plugs too. This was billed accordingly and the receipt clearly shows 4 coils and 4 plugs.
Now I always check the garages work to keep them honest and I suspect that only 2 coils have been changed. 2 physically look brand new and 2 look old. This is quite obvious due to the brightness of the lettering on 2 of the coils. Sadly the numbers on the coils don't really give me timestamps etc so I will be taking the car in to discuss. I will also pull a plug this weekend and check to see how new these are looking.
Regardless of the above, I am almost certain the car isn't pulling as well as before. I tried my best to time a 0-60 on the lap timer function and got 3 pretty quick times.
4.5, 4.3, and a 4.5 again. So in terms of 0-60 we are looking quite well but I just feel the car isn't moving that quick after 60 and it seems to be taking a while to hit redline in 3rd gear. Perhaps I have just gotten used to the power now but it honestly feels like the car was running a stage 1 remap and the fault code reader work / diagnostics the garage has done has removed this.
Before I take the car back to the garage to potentially tear a strip of them for not doing the job I paid for, is there anything specific I should be asking / looking for with the symptoms described above? I am not sure if this is of any benefit, but after the res delete, the car pops really frequently when coming off throttle and revving. I actually don't mind it as it's only a second ish and sounds pretty cool, but there seems to be a mixed bag of people saying they don't get exaggerated popping, and some that do. When the coil was nearly dead, I was getting popping on throttle which is when I knew something was about to die. I tried overtaking someone and the car went into limp mode and the EML came on.
After the garage did their work, I can confirm the issue with popping on boost and EML etc have indeed gone away. I just can't help but feel I've got about a 20% ish power loss!
I've stuck some injector cleaner in too but I am not expecting much of a return on this. Could it be that the plug on cylinder 1 has become fouled due to the failing coil and running rich? And if the garage have been extra naughty and not replaced the plugs then that could be the answer? I will be checking though but just looking for ideas. Or I'm going mad...
Thanks in advance!