WHAT PLUGS ARE YOU RUNNING WITH YOUR JB4

[WHITEGT]

HI All,

Curious which plugs you are running with your JB4 on your 3.3 Stinger

thanks

 

[PBennett18]

Just installed mine 3 days ago with HKS plugs

 

[WHITEGT]

Just installed mine 3 days ago with HKS plugs

what part #?

 

[cncBilly]

HI All,

Curious which plugs you are running with your JB4 on your 3.3 Stinger

thanks

BMS sells the Densos so I order those with my JB4. Gapped them at .024.

 

[PBennett18]

what part #?

I believe they’re the m45il don’t know actual part #

 

[WHITEGT]

has anyone ran the NGK? or HKS?

thanks

 

[Stump-1]

I have the NGK ILKR9Q7G and gapped at .024

 

[JayTX]

Run what BMS recommends and you're likely to not have any issues. Denso Step 1 plugs at .022". Easy.

 

[ecko04]

Run what BMS recommends and you're likely to not have any issues. Denso Step 1 plugs at .022". Easy.

That’s not entirely accurate given the number of Denso failures with ceramic cracking or premature blowouts that have been reported on these forums alone.

 

[ecko04]

I’ve been running the HKS M45iL on Map 7 for a little over a year. No issues.

 

[Daniel @ K8 Stinger Store]

We suggest going with HKS M45IL Plugs for your 3.3.

You can view and purchase the HKS Spark Plugs by clicking the link ---> HERE.​

 

[Stingin' Away]

Just installed mine 3 days ago with HKS plugs

BMS sells the Densos so I order those with my JB4. Gapped them at .024.

I have the NGK ILKR9Q7G and gapped at .024

I’ve been running the HKS M45iL on Map 7 for a little over a year. No issues.

Guys, need some assistance here. Are you installing them yourselves? I hate voiding warranties or potentially ruining a car that has a warranty. I've looked at a video that showed a step by step process of how to complete the swap. I'm done some in-depth work on cars before but this motor is a damn maze. I'm confident I can do it but I am paranoid I'll mess something up.

How easy was it to install?

If you took it to a shop, how much did they charge you?

Preciate any help!

 

[ecko04]

A shop is most likely going to charge you shop rates. Also, you aren’t voiding the warranty by changing the spark plugs — they’re routine maintenance.

Changing the plugs isn’t difficult. As long as you have a decent tool set, some extensions, and a lot of patience. I would estimate an hour and a half on the first go round with you being very meticulous.

Subsequent changes would take under and hour once you have it down.

It’s not hard. And to pay a shop 3-4 hours of shop time is absurd unless you have money to blow.

Now if you don’t have a garage and you’re changing them in the blistering heat then I can see why you’d be inclined to pay someone. But assuming you have some shade, tools, and time — then I don’t see why you can’t get it done yourself.

 

[Stingin' Away]

A shop is most likely going to charge you shop rates. Also, you aren’t voiding the warranty by changing the spark plugs — they’re routine maintenance.

Changing the plugs isn’t difficult. As long as you have a decent tool set, some extensions, and a lot of patience. I would estimate an hour and a half on the first go round with you being very meticulous.

Subsequent changes would take under and hour once you have it down.

It’s not hard. And to pay a shop 3-4 hours of shop time is absurd unless you have money to blow.

Now if you don’t have a garage and you’re changing them in the blistering heat then I can see why you’d be inclined to pay someone. But assuming you have some shade, tools, and time — then I don’t see why you can’t get it done yourself.

Plenty of garage space and would probably need to buy an extension or two for the socket. When I say void the warranty, I mean breaking something and having to take it to the dealership for them to repair it. It's money that doesn't need to be spent. But you know how it goes, the hayabusa effect is kicking in. I'll do it myself, just wanting some opinions of experiences you all have went through.

Thanks

 

[JayTX]

That’s not entirely accurate given the number of Denso failures with ceramic cracking or premature blowouts that have been reported on these forums alone.

Just did a quick search of Denso plugs and didn't see any threads of failures. Link them to me if you can, I'm curious to read myself. If there are failures I'm sure it's a very small percentage, which is why I said "likely to not fail." BMS is extremely reputable and wouldn't recommend something that is likely to fail. If there were frequent failures I'm sure they would have recommended something else, given how long the system has been out.

 

[PBennett18]

I chose to go the route of not removing the intake manifold since I had the requisite sockets and extensions took me around 2 hours as I was taking my time but everything was easy and clean just needed a small set of hands to unclip the coil packs and what not

 

[ecko04]

Just did a quick search of Denso plugs and didn't see any threads of failures. Link them to me if you can, I'm curious to read myself. If there are failures I'm sure it's a very small percentage, which is why I said "likely to not fail." BMS is extremely reputable and wouldn't recommend something that is likely to fail. If there were frequent failures I'm sure they would have recommended something else, given how long the system has been out.

This isn’t a discussion about the reputation of BMS.

This car has issues with spark in stock form. Users have reported cases of plugs failing on the stock tune and replacement plugs failing in tuned applications

Users have reported cases of cracked ceramic on Denso IKH24 leading some users to go to 2-step colder Denso plugs, IKH27. I don’t have time to find the threads and postings, but they’re on this forum and there’s no shortage of them.

Denso plugs are 1/3 the cost of HKS plugs. Given the difference in price, there will never been an apples to apples comparison simply because it’s more financially advantageous for some users to swap a Denso plug if it fails than to drop the money on HKS plugs when there’s a chance the Denso plugs will be fine.

The fact is that all users don’t use this forum. This is a space for Stinger enthusiasts so the sample will inherently be smaller. Denso makes a fine product, but it’s not a product that I’m putting in this car, and that’s the advice that I give to anyone with a Stinger. Chasing down the cause of a misfire or rough idle that isn’t throwing a code isn’t fun and I’ve read about people doing it one too many times with this car and the culprit has almost always been the spark plug.

 

[cncBilly]

Guys, need some assistance here. Are you installing them yourselves? I hate voiding warranties or potentially ruining a car that has a warranty. I've looked at a video that showed a step by step process of how to complete the swap. I'm done some in-depth work on cars before but this motor is a damn maze. I'm confident I can do it but I am paranoid I'll mess something up.

How easy was it to install?

If you took it to a shop, how much did they charge you?

Preciate any help!

Did it my self. Your first time will be tricky. After that it will be like childs play. Save your money do them yourself, you’ll be very happy you did when you finish.

 

[WHITEGT]

Did it my self. Your first time will be tricky. After that it will be like childs play. Save your money do them yourself, you’ll be very happy you did when you finish.

which ones did you install?

 

[cncBilly]

which ones did you install?

Denso. Got them from BMS when I ordered my JB4. I run map 2 daily, go to 3 and 5 occasionally when using E30. Pretty much always in sport mode and I drive spirited when conditions allow. No problems yet!