I posted this question in the general "Engine, Drivetrain" section but with quite little feedback, so im hoping for some more response here.

It turned out that there was a hole in my left newly installed Strup header. I contacted Strup and they offered me a free replacement with no questions asked (over 100 sold and no one else has had any problems...). Though as they have sold out all stock it will take a few weeks util they can send me a replacement.

Currently i have one Strup header (right) and one stock (left) paired with stock cat's and HKS Hi-Power exhaust (which as most of you know is a "true dual" system).

The question is if you think it could cause any harm to the engine driving with one Strup and one stock header? (concidering AFM, engine load etc)

Thanks
/Roger

 

To be quite honest I'm not really sure. But mods like headers tend to change the air/fuel ratios, so one bank could be running richer/leaner than the other. The other "mystery" factor is the stock ECU.

You could throw a code (like lean bank 1, etc) , you might not... but I think the stock ECU should be able to make virtually any condition driveable by pulling timing. Like if bank 1 is running lean it could pull timing and then you'll lose power but keep the engine from detonating...

Please correct me if I'm wrong, I'm not the most experienced in this area

 

I can't imagine your ECU will be happy with the readings it'll be getting, heh.

 

Agree. Engine Management is smart and will recognize exhaust flow on one side of the motor is different than the other. The ECU will make minor adjustments. Since you do not intent to drive, say, 10,000 miles with this unique mod, I see no detrimental effect.