spark plug..Temp? gap? copper?

[bigrobby]

99.5 A4 1.8t APR 91 octane 155k AEB

got some surging...and tons of miles on my plugs. time to change. i've read tons of writeups but i'm still not clear.

most boost i'll ever get...peak...is around 14psi. i live in atlanta so it's rather hot.

-i'm thinking NGK bkr7e as far as heat range. is there an advantage to Bkr6e?

-gap...i was just gonna stick to .032 but i've read a lot of people liking .028. don't know if i'll need that with just stage 1 and intake?

---and is it REALLY for my car better to get the copper's vs platinum or iridium.???? if its not gonna make a real difference, i'd rather not change my plugs at every oil change.????

[jpcallmotor]

I am running 1000 miles so far on NGK Iridium IX's BKR6EIX - I am all stock, gapped to .32 with no problems. If you are chipped and K04'd I would gap to .28 and get a colder plug BKR7E. (B5 1.8T)

I hear the best results are to get coppers, but the change intervals are low and you almost need to change them out every oil change or 5-6K miles.

Sounds like you know everything you need to know already...

[Seerlah]

Gap them between .028" and .030" for chipped/flashed ECUs. Test plugs out till you find which ones you like best. I ended up with the Bosch F6DTC.

[bigrobby]

i think i'm splitting the difference on the gap and goin .030.

i think i'm pretty settled on the temp range of BKR7e being ok...

but my big question still is.....do i really need a copper plug??? am i actually gonna have any misfiring/ loss of power with a platinum? if so...i can deal with changing them often.....i just dont wanna waste time and money if i dont have to

[jpcallmotor]

I have Iridiums and I get a very slight miss once in a while, not even worth mentioning really as I do have over 140K.

But to answer your question, I think coppers are more efficient, the only downside is frequent change intervals. Platinums and Iridiums are designed to last but not quite as a better spark than the coppers.

[Seerlah]

Copper is a better conductor than platinum. But platinum lasts longer than copper will. NGK BKR7E plugs are only like $10 for 4 and you just would have to change them every 10k miles max. Most people change them every or every other oil change (which they do at 5k intervals).

[bigrobby]

copper is a better conductor and it will also absorb heat better supposedly allowing lower egt's ............but will i EVER actually notice that on a (hard driven) stage 1 street car??

[Seerlah]

Don't know

[D's Avant]

Gap them between .028" and .030" for chipped/flashed ECUs. Test plugs out till you find which ones you like best. I ended up with the Bosch F6DTC.

Like Seerlah say's, try some different plugs and see what works best for your car. I've run the 7 and 6E's gap at .28-.30" with good results. Seems to run smoother with Bosch F6DTC's now though. 17-18 PSI.

[bigrobby]

ok i'm not thinking bkr7eix.....anyone running stage one ever had a problem with these???

[bigrobby]

oh by the way..none of the stores near me..(i'm in SW Virginia now) have the bkr7e's so i'm gonna have to order whatever i get.. otherwise i'd just try out the regulars

[turboquattro068]

I think next time I'm going to try the f6dtc plugs, but for now I"ll take bkr6es for 1.50 a pop lol....

[turbo kraut]

i've been running coppers for a while now.......... i buy eight at a time, and the total is still cheaper shipped then 4 ir's........... also seems to preform better, i will be buying more this weekend as i have had these in for a while now

[2001A4QUATTRO]

For your setup run BKR6E's with the gap @ .030. If you run the Colder plug it will never get hot enough to clean the plug and it will foul. You only need the colder plug if you are Stage 3 or higher... (Flamesuit on) K04'd cars need to run BKR6e's gapped to .028 My .02....

[black99.5a4]

i ran bkr7e's at .028 in the dead of winter on a stage 1+ car and never fouled a plug out.. it ran great, just the plugs were past their life and needed a change.

i will say i went back up to bkr6e's at .028 and its getting better mileage, a bit smoother in the cold.

i'd say at the 6's if i were you

[Fink_tha_Audi]

For your setup run BKR6E's with the gap @ .030. If you run the Colder plug it will never get hot enough to clean the plug and it will foul. You only need the colder plug if you are Stage 3 or higher... (Flamesuit on) K04'd cars need to run BKR6e's gapped to .028 My .02....

Now what do you mean "colder" plug?

[2001A4QUATTRO]

Colder plug would be the BKR7E's.

[Fink_tha_Audi]

So running a colder plug will help igniting the fuel better?