Anyone using Bosch Platinum IR Fusion spark plugs

[Lufu]

Wonder if it's worth changing to Bosch Platinum IR Fusion spark plugs?

 

Has anyone noticed significant difference using these plugs?

[CarFreak]

Just ordered 2 sets for my car; will take some time to come in. The Bosch Fusion IR is a fine center electrode, and as such will require less voltage to spark. So, they exploit this fact to widen the spark gap to 1.6mm. Its the wider spark gap that sounds interesting. Copper plugs with electrode diameter of 2.5mm have a 0.8mm gap; Japanese irridiums have a 0.4mm or 0.7mm electrode diameter and 1.1mm spark gap. If the Bosch IR plugs can support a 1.6mm gap, I think it will safely perform better than the Jap irridiums. Additional plus factor is the 4 open ground electrode position exposing the spark directly onto the flame front; with the traditional ground electrodes, you will have to index the plug. I have been using Pulstars, but sadly, they don't seem reliable, plus they are expensive. Switching back to Denso iridiums was a downgrade. Hope the Bosch IR's work...

[Hermit]

Upz this thread.

 

More comments from bros/ sis who used/ using this plug ?

[CarFreak]

Its been a month; I had Pulstars installed for ~6 mths prior, and the reliability of the plug forced me to use back my Denso's while I looked for the Bosch IR. I eventually got to try the Bosch IR's and also the Brisk plugs. Installed the Bosch's for 2 weeks and the Brisk for almost 2 wks. My goal was good low end torque for city driving. I had the hypothesis that the Denso's were good, the Pulstars were better, and the Bosch spark gap of 2.5mm as well as the Brisk spark gap of 3mm were the key determinants of performance; the issue was whether my coils could support such a large gap. As it turns out my coils fired well regardless of plug/spark gap. The daily observation was how well the car responded from rest at a fixed 20% throttle. Nett: I had the best experience with the Brisk, then the Pulstars, then the Bosch IR, and lastly the Denso's (to be fair, the Denso's were 20,000km old). Consumption wise, I had consumption improvements consistent with their low end torque performance. No surprises, I now clock 9.5km/l on my 4YO Nissan Presage in this hot weather; looks very encouraging. Most important feedback came from the missus who also had the same views about the plug performances; considering she's slightly heavier footed than me, her ability to discern the performance was a telling point. Bang for the buck will probably go to the Bosch IR's considering their price vs lifespans specified. Bosch's cost me S$75 a set (locally), Brisk's were imported for S$105/set.

[Bigass]

There's some1 in the island selling the Bosch Sparkplugs at a low price as well.

 

Check this website out.

[Tanhangkiang]

Just ordered 2 sets for my car; will take some time to come in. The Bosch Fusion IR is a fine center electrode, and as such will require less voltage to spark. So, they exploit this fact to widen the spark gap to 1.6mm. Its the wider spark gap that sounds interesting. Copper plugs with electrode diameter of 2.5mm have a 0.8mm gap; Japanese irridiums have a 0.4mm or 0.7mm electrode diameter and 1.1mm spark gap. If the Bosch IR plugs can support a 1.6mm gap, I think it will safely perform better than the Jap irridiums. Additional plus factor is the 4 open ground electrode position exposing the spark directly onto the flame front; with the traditional ground electrodes, you will have to index the plug. I have been using Pulstars, but sadly, they don't seem reliable, plus they are expensive. Switching back to Denso iridiums was a downgrade. Hope the Bosch IR's work...

 

 

I gave the bosch ir fusion a try today. Equivalent heat range ik 20-22

 

Agree with you on the wider gap I'd interesting. Good 40 percent wider.

 

Previously using denso iridium ik20

[Tanhangkiang]

I gave the bosch ir fusion a try today. Equivalent heat range ik 20-22

 

Agree with you on the wider gap I'd interesting. Good 40 percent wider.

 

Previously using denso iridium ik20

Not very sure if my cs3 has been some misfire at second gear during 1+k rpm.

Need to verify again.

 

Or rather misfiring only happen at high rpm and doesn't occur at low rpm? And what I experience is something else?

 

I am using the same heat range.