Bosch +4 plugs
Thread Starter
1st Gear Member
Joined: May 2007
Posts: 105
From: Whitehorse, Yukon Territories, Canada
Bosch +4 plugs
Anyone have any experience with Bosch +4 plugs in their 4.0L V6 ?
I used to use these plugs in every car I owned, but since buying the convert I haven't changed the plugs. Since I'm going to finally (and reluctantly according to my pocket book !) jump into the modding world (CAI, new TB and tune to start with), I figured I better do the basic plug and wire replacement with new ones.
I know the plugs won't boost HP (contrary to my Civic owning friends, haha) or any of that nonsense, but from my previous experience, they're pretty decent. Opinions / experiences ?
I used to use these plugs in every car I owned, but since buying the convert I haven't changed the plugs. Since I'm going to finally (and reluctantly according to my pocket book !) jump into the modding world (CAI, new TB and tune to start with), I figured I better do the basic plug and wire replacement with new ones.
I know the plugs won't boost HP (contrary to my Civic owning friends, haha) or any of that nonsense, but from my previous experience, they're pretty decent. Opinions / experiences ?
3rd Gear Member
Joined: Apr 2008
Posts: 939
From:
There's no magic in a spark plug, unfortunatly. You'll see very little - if any - gain between one plug and another.
Fancy/expensive plugs have iridium or platinum coatings on the electrodes. Doesn't make the engine run any better. But it does make the plug last longer. That's how manufacturers can recommend 100K miles on a set of plugs.
Fine wire iridium plugs look like a standard plug. But the ground electrode is very thin. It's claimed to allow a faster flame kernel.
Unusual or multi electrode plugs like the Bosch +4, Splitfire, and E3, have not been proven to make a significant improvement. And at $6-8 each for these plugs, certainly not worth the expense, IMO.
The Pulstars are interesting. They appear tio be a capacitive discharge unit on each spark plug. This would appear to give you a better spark without changing the rest of the secondary ignition system. Interesting concept. But we all know that adding a CD ignition box to a stock engine provides no benifit. I would have to see some serious testing done before I plop down $25 for a spark plug.
I use a standard autolite copper core plug in everything I drive. For my street vehicles - Harley, truck, wife's car - I change them, about every 40K miles. My track car goes through 2-3 sets of plugs a year. At $1.50 a piece, I don't worry about changing plugs on a whim. When it's time to replace the plugs on the Mustang, it will also get standard Autolites.
Heres' some cross referance information, and comparative prices for you.
http://www.sparkplugs.com/results_ap...1&AAIA=1433388
Fancy/expensive plugs have iridium or platinum coatings on the electrodes. Doesn't make the engine run any better. But it does make the plug last longer. That's how manufacturers can recommend 100K miles on a set of plugs.
Fine wire iridium plugs look like a standard plug. But the ground electrode is very thin. It's claimed to allow a faster flame kernel.
Unusual or multi electrode plugs like the Bosch +4, Splitfire, and E3, have not been proven to make a significant improvement. And at $6-8 each for these plugs, certainly not worth the expense, IMO.
The Pulstars are interesting. They appear tio be a capacitive discharge unit on each spark plug. This would appear to give you a better spark without changing the rest of the secondary ignition system. Interesting concept. But we all know that adding a CD ignition box to a stock engine provides no benifit. I would have to see some serious testing done before I plop down $25 for a spark plug.
I use a standard autolite copper core plug in everything I drive. For my street vehicles - Harley, truck, wife's car - I change them, about every 40K miles. My track car goes through 2-3 sets of plugs a year. At $1.50 a piece, I don't worry about changing plugs on a whim. When it's time to replace the plugs on the Mustang, it will also get standard Autolites.
Heres' some cross referance information, and comparative prices for you.
http://www.sparkplugs.com/results_ap...1&AAIA=1433388
2nd Gear Member
Joined: Dec 2006
Posts: 278
From: Boise, Idaho
There's no magic in a spark plug, unfortunatly. You'll see very little - if any - gain between one plug and another.
Fancy/expensive plugs have iridium or platinum coatings on the electrodes. Doesn't make the engine run any better. But it does make the plug last longer. That's how manufacturers can recommend 100K miles on a set of plugs.
Fine wire iridium plugs look like a standard plug. But the ground electrode is very thin. It's claimed to allow a faster flame kernel.
Unusual or multi electrode plugs like the Bosch +4, Splitfire, and E3, have not been proven to make a significant improvement. And at $6-8 each for these plugs, certainly not worth the expense, IMO.
The Pulstars are interesting. They appear tio be a capacitive discharge unit on each spark plug. This would appear to give you a better spark without changing the rest of the secondary ignition system. Interesting concept. But we all know that adding a CD ignition box to a stock engine provides no benifit. I would have to see some serious testing done before I plop down $25 for a spark plug.
I use a standard autolite copper core plug in everything I drive. For my street vehicles - Harley, truck, wife's car - I change them, about every 40K miles. My track car goes through 2-3 sets of plugs a year. At $1.50 a piece, I don't worry about changing plugs on a whim. When it's time to replace the plugs on the Mustang, it will also get standard Autolites.
Heres' some cross referance information, and comparative prices for you.
http://www.sparkplugs.com/results_ap...1&AAIA=1433388
Fancy/expensive plugs have iridium or platinum coatings on the electrodes. Doesn't make the engine run any better. But it does make the plug last longer. That's how manufacturers can recommend 100K miles on a set of plugs.
Fine wire iridium plugs look like a standard plug. But the ground electrode is very thin. It's claimed to allow a faster flame kernel.
Unusual or multi electrode plugs like the Bosch +4, Splitfire, and E3, have not been proven to make a significant improvement. And at $6-8 each for these plugs, certainly not worth the expense, IMO.
The Pulstars are interesting. They appear tio be a capacitive discharge unit on each spark plug. This would appear to give you a better spark without changing the rest of the secondary ignition system. Interesting concept. But we all know that adding a CD ignition box to a stock engine provides no benifit. I would have to see some serious testing done before I plop down $25 for a spark plug.
I use a standard autolite copper core plug in everything I drive. For my street vehicles - Harley, truck, wife's car - I change them, about every 40K miles. My track car goes through 2-3 sets of plugs a year. At $1.50 a piece, I don't worry about changing plugs on a whim. When it's time to replace the plugs on the Mustang, it will also get standard Autolites.
Heres' some cross referance information, and comparative prices for you.
http://www.sparkplugs.com/results_ap...1&AAIA=1433388
Perfect comments above ^^^ . I have tried em' all including Bosch plus 2 and 4. I am also using Autolite copper 5134's