[M3WC]

Not just those threads turning the N54 section to sh*t.

[secretsquirrel]

Originally Posted by Syndicategt

You should chime in on the BOV thread that just popped up

You shouldn't encourage mischief. But since you did I was compelled post.

[Wedge1967]

Well considering the direction this thread is going, I thought I would share the fact that I grew up on a farm in the mid-west and honestly, I shit you not, I have used a COBB to wipe before… True story! You know, the shit stuck to the COBB then also. True story! LOL

(For everyone who thinks I just trashed COBB, well you’re wrong. You all had a choice to buy whatever tune you wanted when you bought your tune. If you are having issues with misfires, well maybe you should have done some RESEARCH or contacted COBBs wonderful technical support for assistance. I’m sure they will call you back, text you, or send you their personal cell phone numbers like Shiv does so that they can support their innovative product in their limited market space.)

[Jeff@TopGearSolutions]

Originally Posted by mikeith

i've been putting this off for over a month because i only get misfire on occasion on my V5 lol. i'm just nervous after seeing so many threads of people replacing plugs and then an injector/s immediately goes out! i'm at 33k and still on the original injectors so i'm long overdue so i'm paranoid as crap about the injectors going out (got the newest fuel pump and brand new turbos though )but i know i NEED to get new plugs, i just REALLY dont want to have to uninstall and reinstall my DP's if the injectors go out all because my SA is a stickler

I dont see a correlation between plugs and injectors. If either of them are going to go then they are going to go on their own merit.

Just replace your plugs.

[asian010]

i plan on changing my plugs at 25k soon and i dont even have a tune.

[BrianMN]

Changing plugs is cheap insurance for a smooth running engine. Its very simple-The harder you drive your car, the faster the plugs will be come worn.

Even if your'e not throwing misfire codes- you can still feel small misfires and/or hiccups from worn plugs.

For reference- I normally replace spark plugs 3 times throughout the 10 track events/year. Once they begin to open up it's a slippery slope. Especially on high boost-these plugs absolutely need to be in good shape.

And for those track monkeys- Oil is another thing that is cheap to replace every single track event.

[mikeith]

Originally Posted by Jeff@topgearsolutions

I dont see a correlation between plugs and injectors. If either of them are going to go then they are going to go on their own merit.

Just replace your plugs.

fine orderd just now from autohausaz

[Irishace]

Never had a misfire in my life. Plug changes are a definite and easy win. Well said OP.

[1000klr]

Originally Posted by B_davis

Wow, with release of Cobb Stg 2/Procede Aggressive maps the forums are full of misfire complaints. Change your damn plugs, it takes literally 25 minutes on this car. Stop blaming your tune ....

not always the tune, dont mislead people, i have misfires because a bad injector, not everyone NEEDS new plugs

[Jeff@TopGearSolutions]

Originally Posted by 1000klr

not always the tune, dont mislead people, i have misfires because a bad injector, not everyone NEEDS new plugs

This is true.

It depends on how you are getting misfires.

If they are in 1 cylinder then you can do the "free" checks first.

Start with swapping the coil pack from the cylinder that is misfiring to the one that is not misfiring, if it moves its like the coilpack.

If there is multiple misfires it usually points to sparkplugs, HOWEVER, if there is a rough idle and hesitation it could be injectors or fuel related.

When the problem stems from fuel related problems there are usually fuel codes present.

However, the end user needs to take the appropriate steps to determine what is in fact the problem as not all misfires are created =

[1000klr]

Originally Posted by Jeff@topgearsolutions

This is true.

It depends on how you are getting misfires.

If they are in 1 cylinder then you can do the "free" checks first.

Start with swapping the coil pack from the cylinder that is misfiring to the one that is not misfiring, if it moves its like the coilpack.

If there is multiple misfires it usually points to sparkplugs, HOWEVER, if there is a rough idle and hesitation it could be injectors or fuel related.

When the problem stems from fuel related problems there are usually fuel codes present.

However, the end user needs to take the appropriate steps to determine what is in fact the problem as not all misfires are created =

this is the problem that i had, originally i had misfires on cylinder 5(but who hasnt right) so i swapped the coil, misfire stayed. i replaced all 6 plugs with oem, misfire went away for 2 weeks. after not driving the car for 3 days went to start it up with a terrible misfire on 1,2,3,then all cylinder misfires. turned out to be injector on cylinder 1. replaced injector and had it adjusted today. idle still seems sort of low around 550-600 with a little shaking, bmw told me this would have gone away after the adjustment, why the hell did i just pay 200 dollars for an injector adjustment and nothing to change

[a7med606]

how can i know if i have a missfire ??
there is any aftermarket plugs that is specialised for n54 engines ??

[secretsquirrel]

Originally Posted by a7med606

how can i know if i have a missfire ??
there is any aftermarket plugs that is specialised for n54 engines ??

No, the stock plugs are best.

[AYF80]

You guys using the OEM plugs?

[enrita]

you can use NGK plugs of mini cooper S as well. those are my next plugs... search and you will get all your answers.

[335okc]

would changing spark plugs help timing drop/ knock retard event? no misfire, just consistent timing drop.

[thebigragu99]

Best thread started on here!!.

People it's very simple,every 20 k on tuned cars and every 40k on non tuned plugs will need to be changed.Turbo cars run like shit with boost leaks,old oil,bad plugs,and people who work on their own cars who are clueless.

[nitehawk]

http://www.e90post.com/forums/showpo...36&postcount=9

[hotrod182]

Originally Posted by BrianMN

Changing plugs is cheap insurance for a smooth running engine. Its very simple-The harder you drive your car, the faster the plugs will be come worn.

Even if your'e not throwing misfire codes- you can still feel small misfires and/or hiccups from worn plugs.

For reference- I normally replace spark plugs 3 times throughout the 10 track events/year. Once they begin to open up it's a slippery slope. Especially on high boost-these plugs absolutely need to be in good shape.

And for those track monkeys- Oil is another thing that is cheap to replace every single track event.

I wonder how soon they can actually go bad? I have maybe 4-5K miles on mine, and don't know whether or not they might be a cause of my nitrous misfire issues? Of course they must have over 100 qtr mlle runs on these plugs alone. And just yesterday with a 11.7 at 125.0 mph on the vbox, you can see they work fine off of nitrous.