Bavarian Autosport Performance Ingnition Coils?

[AlpineRob]

Anyone have experience with these>? are the worth it? notice a difference? and are they good for motors with about 150+k miles? thanks

also related..the Bavarian performance  spark plug wires..worth it? (same questions as above) thank you

[haledj]

I would say they are a waste of money. New stock ones or COP is the way to go unless you are looking for ways to blow money, if that is the case I suggest a suit of armor full of applesauce.

[hoevesruperd]

a suit of armor full of applesauce.

that's exactly what i am looking for. hippos are becoming a little boring

[JHZR2]

I got new coils when I was having an issue with passing NJ emissions (turned out that my OE cat, and the mineke cat I replaced in its place both sucked bigtime, new OE cat made me squeaky clean), I replaced the coils, thinking that anything might help, and a tuneup was a good place to start on a car with 110k.  

I noted a difference in power and fuel economy at steady state cruise.  Whether it is any difference compared to new OE coils, I cannot say, and never will be able to...

I got the bavauto ones for slightly less than new OE coils, so I figured it was a good choice.  cant complain for the choice Ive made.

That said, the difference wasnt major or earth shattering... In hindsight I didnt need to do it, but Im happy with my "upgrade"

JMH

[Tonyb]

I paid way less then oem and felt a big diff in mid to top end with the bav's. Not sure how that's a waste of $$$

[SnPaC]

I just failed NJ inspections with a NOx reading of 1777 (1134 max) and a HC reading of 285 (146 max).  The cat was replaced recently.  any ideas where to start?  O2 sensor? thx

I got new coils when I was having an issue with passing NJ emissions (turned out that my OE cat, and the mineke cat I replaced in its place both sucked bigtime, new OE cat made me squeaky clean), I replaced the coils, thinking that anything might help, and a tuneup was a good place to start on a car with 110k.  

I noted a difference in power and fuel economy at steady state cruise.  Whether it is any difference compared to new OE coils, I cannot say, and never will be able to...

I got the bavauto ones for slightly less than new OE coils, so I figured it was a good choice.  cant complain for the choice Ive made.

That said, the difference wasnt major or earth shattering... In hindsight I didnt need to do it, but Im happy with my "upgrade"

JMH

[JHZR2]

A lazy O2 can cause issues, however, that is awful high NOx, which I cant see to be an issue unless the O2 is casing you to go real lean.  My understanding is that a bad O2 will go rich (waste fuel), and running rich will have lower combustion temps, lowering NOx (but of course youll have the higher HCs).

I put in an aftermarket cat in 2004 when I failed the first time.  It barely got me over the line.  Aftermarket cats are only barely good enough to reduce NOx to the maximum level.  With an aftermarket cat, I went down a few ppm over my original dead cat.  With a new OEM BMW cat, I went down to nearly none.  

So was your cat replacement OE BMW?  if not, Id look for that.

Doesnt hurt to put in a new O2 sensor regardless, depending on when you did it last.

JMH

[colin86325]

Sounds like a lean misfire.  Check your ignition system (plugs, coils, wires) and check for vacuum leaks.

[tony92ic]

I bought the Bav Auto coils for mine (129,000). It was sorely in need of a tuneup so it also got new plugs. I can't apportion credit to new coils versus plugs versus ditching the wires but it runs smoother and feels stronger mid to upper end.

I ordered 4 of the 6 cyl coils and did the COP conversion at the same time. You can't order online that way, but if you call them they'll do it.

It wasn't cheap and I never tried the used Bremi's to see if I thought there was a difference.  I think if I was going to do it again, I'd get the bremis first, but I am pretty happy with the Bav Auto coils.  

They are easy to swap so maybe if a set of Bremis shows up at the pick n pull I'll grab em and try a comparison next time i'm at the dyno.

Also I don't know the difference between the M50 and M42 coils (besides the casing is different) but assuming there is a performance advantage to the M50 coils it looks to me like you could put them into the E30 M42 coil pack as well.

But I really like the COP conversion.