DIY - 50i Spark Plugs

[Maverik259]

Originally Posted by BobBeau

Looked fine as far as I could tell

I more meant what kind did you have. Can you snap a pic of it. If not no biggie. Just curious what the middle iteration of this part looks like lol.

[BobBeau]

l

[Maverik259]

Originally Posted by BobBeau

I'm not sure about the coils. It would always run fine on the stock tune.

What tune do you have? Maybe the issue is there.

[AZTWW]

Originally Posted by BobBeau

I'm not sure about the coils. It would always run fine on the stock tune.

sounds like it is related to the fueling system in some way. Did you ever try to log with BM3? You would be able to diagnose more by looking at what is happening leading up to throwing a code such as a cylinder leaning out, etc.

[AZTWW]

Originally Posted by Maverik259

What tune do you have? Maybe the issue is there.

We both have BM3 stage 1.

[Maverik259]

Originally Posted by AZTWW

We both have BM3 stage 1.

Ah

[mp25]

great write up doing this soon too.

[mikeson]

Originally Posted by Maverik259

Why?

Because I had to take out more parts.
Almost everything you see top of engine, had to go on 3.5 engine.

[Maverik259]

Originally Posted by mikeson

Because I had to take out more parts.
Almost everything you see top of engine, had to go on 3.5 engine.

Noice!

[Doberman16]

Thank you again Maverik259 for the fantastic DIY!

I used this tonight to replace my plugs and went ahead and did coils as well. I was getting occasional limp mode also (bootmod3 tuned).

2 interesting things:
-My car is 2/2014 and had the rubber hose.
-My expansion tank was held on by all Torx. Black bolt was T25 and the silver ones were T30. I did see an E socket holding something else down, but not the tank or bracket!

[Maverik259]

Originally Posted by Doberman16

Thank you again Maverik259 for the fantastic DIY!

I used this tonight to replace my plugs and went ahead and did coils as well. I was getting occasional limp mode also (bootmod3 tuned).

2 interesting things:
-My car is 2/2014 and had the rubber hose.
-My expansion tank was held on by all Torx. Black bolt was T25 and the silver ones were T30. I did see an E socket holding something else down, but not the tank or bracket!

Nice. And thank you. Are you the original owner? If not then it's probably leaked before and been replaced. As for the Torx not sure what to say about you're being all torx and none E like mine.

Glad it helped.

[Doberman16]

Originally Posted by Maverik259

Nice. And thank you. Are you the original owner? If not then it's probably leaked before and been replaced. As for the Torx not sure what to say about you're being all torx and none E like mine.

Glad it helped.

I am the second owner. It's definitely possible this hose was already replaced on mine. However the plugs sure looked original. I'm at 79k.

Perhaps when the hose was replaced, that tank was moved and they fastened it with only torx. Don't get me wrong, I didn't think it was a mistake in your DIY, just an interesting call out.

[Maverik259]

Originally Posted by Doberman16

I am the second owner. It's definitely possible this hose was already replaced on mine. However the plugs sure looked original. I'm at 79k.

Perhaps when the hose was replaced, that tank was moved and they fastened it with only torx. Don't get me wrong, I didn't think it was a mistake in your DIY, just an interesting call out.

Oh totes and I'd very surprised if your stock plugs made it 80k miles. Generally 60k is where most manufactures change them if they don't present issues earlier. I mean mine had less than 30 and looked like death and they only had been chipped for less than 10k miles.

[Twin Peaks]

Which specific torque wrench did you use? Amazon has $25-$40 wrenches with mixed reviews on all of them.

[Maverik259]

Originally Posted by Twin Peaks

Which specific torque wrench did you use? Amazon has $25-$40 wrenches with mixed reviews on all of them.

I have a husky 3/8" and a tekton 1/2"

[tkelley86]

Question, would F85 spark plugs make sense for me (Dinan Stage 1 and Dinan Intake on 50i)? Or is this more of a flash centric enhancement? Car has 82K miles so I'm thinking it's about time to swap plugs anyway, I think I read on here it's required at 80K.

[DuSh]

Originally Posted by tkelley86

Question, would F85 spark plugs make sense for me (Dinan Stage 1 and Dinan Intake on 50i)? Or is this more of a flash centric enhancement? Car has 82K miles so I'm thinking it's about time to swap plugs anyway, I think I read on here it's required at 80K.

You can go with F85 or alternately with NGK (more expensive) plugs. Both are a step up from stock 50i plugs. You need to gap them down too. I can't say if Dinan Stage 1 really needs them or you can get away with stock plugs, but since you are not stock and you need to change them anyway - why not go for something designed for higher output in the first place.

[tkelley86]

Originally Posted by DuSh

You can go with F85 or alternately with NGK (more expensive) plugs. Both are a step up from stock 50i plugs. You need to gap them down too. I can't say if Dinan Stage 1 really needs them or you can get away with stock plugs, but since you are not stock and you need to change them anyway - why not go for something designed for higher output in the first place.

I've been in the modding business for many moons now, although it's always been aesthetics/intakes/suspension/etc. This is the first time I am playing around with a piggy back and based on what I learned here, Dinan is pretty damn safe but don't expect a rocket ship. At 82K miles, I'm playing it safe (safer?). Plus it was $800 from the classifieds so why not

[anon1000]

Originally Posted by DuSh

You can go with F85 or alternately with NGK (more expensive) plugs. Both are a step up from stock 50i plugs. You need to gap them down too. I can't say if Dinan Stage 1 really needs them or you can get away with stock plugs, but since you are not stock and you need to change them anyway - why not go for something designed for higher output in the first place.

Is the appropriate gap 6.2mm - I have seen posts about 5.4mm, 5.5 etc and even without tune to go down to 6.2?

[DuSh]

Originally Posted by anon1000

Is the appropriate gap 6.2mm - I have seen posts about 5.4mm, 5.5 etc and even without tune to go down to 6.2?

0.6-0.62mm (0.023in) probably is ideal balance. The guy who went down to 0.5mm (0.02 in) on BM3 tune - got rough idle. So I would say going lower than 0.6mm is not needed for n63tu. You can try 0.55mm (0.021in) and see if idle will be smooth.

[perry8912]

Originally Posted by DuSh

0.6-0.62mm (0.023in) probably is ideal balance. The guy who went down to 0.5mm (0.02 in) on BM3 tune - got rough idle. So I would say going lower than 0.6mm is not needed for n63tu. You can try 0.55mm (0.021in) and see if idle will be smooth.

Did the guy use NGK plugs? BM3 did tell me to go with 0.02” as well.....

[DuSh]

Originally Posted by perry8912

Did the guy use NGK plugs? BM3 did tell me to go with 0.02” as well.....

Yes NGK ones. You can try - if you get smooth idle - then all is good! Worst case scenario, you'll just regap them a bit (but regaping more than once may cause potential issues, I mean if tip breaks off - then we have a problem Houston).