Different between VDO & MMC in wira

[Izso]

Interesting. Where to try for dyno?

So, these iridium, platinum plugs are just plugs with longer lifespan that doesn't really affect performance at all? The last time I changed my plug for a new set, the car felt slightly more responsive and engine seems to operate smoother.

Not that it doesn't affect performance. If you compare dyno graphs, you'll see less spikes and a smoother graph. That's all. No higher torque or higher HP or whatever. Just smoother lines and possibly better combustion so cleaner combustion chambers?

 

[vr2turbo]

Not that it doesn't affect performance. If you compare dyno graphs, you'll see less spikes and a smoother graph. That's all. No higher torque or higher HP or whatever. Just smoother lines and possibly better combustion so cleaner combustion chambers?

Actually with better combustion, should have more power....

 

[Izso]

Actually with better combustion, should have more power....

Won't one la. Change plugs get more power meh.

 

[vr2turbo]

Won't one la. Change plugs get more power meh.

Change plugs no lah! but if explanation is better combustion, fuel is more completely burnt then power should increase.....lol

 

[RENESIS VIII]

Eh? How come Renesis shared the picture of the VDO has distributor? the distributorless u mean is running coil pack from DOHC 4g92 4g93?

VDO has a distributor but the inner structure of the distributor is different from a conventional old distributor. I believe the distributor for VDO is a fully electronic unit unlike MMC where it is mechanically based.

Not that it doesn't affect performance. If you compare dyno graphs, you'll see less spikes and a smoother graph. That's all. No higher torque or higher HP or whatever. Just smoother lines and possibly better combustion so cleaner combustion chambers?

So overall, a smoother engine operation across the RPM range then?

Actually with better combustion, should have more power....

Maybe true if the original plugs are already firing weaker than specs.

 

[vr2turbo]

Maybe true if the original plugs are already firing weaker than specs.

That is why plug manufacturer tries to out do each other, saying their plugs are designed to burn better, for eg. shifting or making the spark more direct to light the air fuel mixture.

Like splitfire plugs, splitting the ground electrode so the spark not blocked.

NGK V groove on center electrode shifting the spark to the edge, again so that spark is not blocked.

Since V groove have been patented by NGK, Denso did a U groove on the ground electrode, shifting the spark to the edge also, and this have been patented by them.

Then you have Bosch tapered cut ground electrode and center electrode also....

 

[RENESIS VIII]

That is why plug manufacturer tries to out do each other, saying their plugs are designed to burn better, for eg. shifting or making the spark more direct to light the air fuel mixture.

Like splitfire plugs, splitting the ground electrode so the spark not blocked.

NGK V groove on center electrode shifting the spark to the edge, again so that spark is not blocked.

Since V groove have been patented by NGK, Denso did a U groove on the ground electrode, shifting the spark to the edge also, and this have been patented by them.

Then you have Bosch tapered cut ground electrode and center electrode also....

So, what kind of plugs do you recommend? My mechanic always recommend NGK.

Speaking of cable, I went to exhaust shop recently and the boss try to sell me on some spark cable. He had a demo sample there showing a black cable and the one that he is promoting. The black cable shows a weaker spark while the other shows a stronger spark. But I personally think that the black cable is probably faulty, hence the spark is weaker.

 

[vr2turbo]

So, what kind of plugs do you recommend? My mechanic always recommend NGK.

Speaking of cable, I went to exhaust shop recently and the boss try to sell me on some spark cable. He had a demo sample there showing a black cable and the one that he is promoting. The black cable shows a weaker spark while the other shows a stronger spark. But I personally think that the black cable is probably faulty, hence the spark is weaker.

Well, some will give stronger sparks, but what power gain and at what cost?

For plugs, just get the correct heat range and if want something to last, just go for platinum ones. Iridium are just too costly....

 

[RENESIS VIII]

Well, some will give stronger sparks, but what power gain and at what cost?

For plugs, just get the correct heat range and if want something to last, just go for platinum ones. Iridium are just too costly....

At what cost? You mean there will be some kind of negative side effects?

 

[vr2turbo]

At what cost? You mean there will be some kind of negative side effects?

As in the price for the set of plug wire. If it cost a few hundred RM just for a smoother firing, do you think is worth it, as many test have not found it to gain any HP......lol

 

[RENESIS VIII]

As in the price for the set of plug wire. If it cost a few hundred RM just for a smoother firing, do you think is worth it, as many test have not found it to gain any HP......lol

Better just buy back stock cable.

 

[vr2turbo]

Better just buy back stock cable.

In fact stock cable can last the longest.......

 

[gunnerzz]

Better just buy back stock cable.

sometimes when we got extra cash we gatal want to buy the plug cable.

My dad LO47 Pajero was on AC Delco performance cable abd platinum plugs.a lot smoother engine operation. Now on platinum plug with standard cable as the AC Delco is sensitive to internal breakage due to rough handling.

The cable was transferred to 1.5 wira and later to 1.3 wira running std plugs.can feel easier start up and smoother operation. I think its sold together with the wira...

 

[RENESIS VIII]

In fact stock cable can last the longest.......

In some cases, stock can be the best.

sometimes when we got extra cash we gatal want to buy the plug cable.

My dad LO47 Pajero was on AC Delco performance cable abd platinum plugs.a lot smoother engine operation. Now on platinum plug with standard cable as the AC Delco is sensitive to internal breakage due to rough handling.

The cable was transferred to 1.5 wira and later to 1.3 wira running std plugs.can feel easier start up and smoother operation. I think its sold together with the wira...

So in your opinion, is it worth to pay for the extra premium to get those performance cables?

 

[vr2turbo]

In some cases, stock can be the best.



So in your opinion, is it worth to pay for the extra premium to get those performance cables?

His comments also smoother engine operation......lol

 

[gunnerzz]

In some cases, stock can be the best.



So in your opinion, is it worth to pay for the extra premium to get those performance cables?

For person on very tight budget like me its not worth it.

If u have surplus of cash lying around....why not.
it helps decorate the engine bay oso.

 

[RENESIS VIII]

His comments also smoother engine operation......lol

Smoothness is quite a subjective thing for different standards in different people, hahaha. My engine already felt quite smooth.

For person on very tight budget like me its not worth it.

If u have surplus of cash lying around....why not.
it helps decorate the engine bay oso.

Looks like it sounds not worth the money since it is not important enough to make you spend your money.

 

[Izso]

In some cases, stock can be the best.

This is true. Original Bougicord is better than most aftermarket crap cables. I've actually seen folks lose torque after changing cables.

So in your opinion, is it worth to pay for the extra premium to get those performance cables?

Yes.. but you need to know what to buy and whether suitable for your car or not. Back then when I was messing with my car, I changed to this "Best I-Cable" brand plug cables. Although the name is highly amusing and suspicious, I got them at a cheap price after the manufacturer actually advertised here in ZTH (I cannot find the chat anymore) and I challenged them to do an actual test using my car as the guinea pig. Pre and post cable dyno comparison.

The cable did actually increase my torque a bit and smoothened out the entire graph before and after. And I made it a point to give the car a week or two of running with the cables before doing the dyno. The Siemens VDO is notorious for adapting to anything added to it, like useless air-leaking devices and some piggy-backs. And to add icing to the cake, I actually took out the cable and reinstalled the ori cable and the difference was instant. Again, after a week of running ori again I did the dyno once again. The power loss was apparent. Not huge figures like 10-20nm of torque different, but something like 4-5nm of torque which is a lot when you don't have much to begin with. My car with the cable was running something like 14 or 15 kgm of torque in its "final" form.

 

[vr2turbo]

For person on very tight budget like me its not worth it.

If u have surplus of cash lying around....why not.
it helps decorate the engine bay oso.

Yup, the thick red cable clearly can be seen.....lol

 

[RENESIS VIII]

This is true. Original Bougicord is better than most aftermarket crap cables. I've actually seen folks lose torque after changing cables.





Yes.. but you need to know what to buy and whether suitable for your car or not. Back then when I was messing with my car, I changed to this "Best I-Cable" brand plug cables. Although the name is highly amusing and suspicious, I got them at a cheap price after the manufacturer actually advertised here in ZTH (I cannot find the chat anymore) and I challenged them to do an actual test using my car as the guinea pig. Pre and post cable dyno comparison.

The cable did actually increase my torque a bit and smoothened out the entire graph before and after. And I made it a point to give the car a week or two of running with the cables before doing the dyno. The Siemens VDO is notorious for adapting to anything added to it, like useless air-leaking devices and some piggy-backs. And to add icing to the cake, I actually took out the cable and reinstalled the ori cable and the difference was instant. Again, after a week of running ori again I did the dyno once again. The power loss was apparent. Not huge figures like 10-20nm of torque different, but something like 4-5nm of torque which is a lot when you don't have much to begin with. My car with the cable was running something like 14 or 15 kgm of torque in its "final" form.

Yours is running the adaptive VDO ECU. Mine is MMC, so I think there might be some difference if lets say yours and mine are using the same cable?