NGK or Bosch Plugs?

[GazMac]

Been looking at plugs as title suggests. which are better and which have people used/prefer?
NGK Iridium IX
Bosch Super 4

Obviously the Bosch plugs are half the price, any reason for this?
Also if anyone has used either can they list the part numbers for them so i make sure i order the right ones.

cheers

 

[TubbyTwo]

steer clear of the super 4s, they are cheap for a reason.

Cant go wrong with NGK

 

[Mo Arif]

Does the LC/LCR need Iridiums?

 

[Mark300zx]

No but it does run better on NGK

 

[Slimy]

The manual quotes NGK Iridium as being the standard for my V5, I suspect it may be the same for the Cupra's. Although they also quote a cheaper alternative, but I've never thought the saving in money is worth the potential loss in performance or reliability.

 

[TubbyTwo]

i use NGK BKR7e coppers, colder range for my mapped car, change them everytime i change the oil.

job done.

 

[GazMac]

would i be right in thinking these are the right ones and at a good price too.

http://www.amazon.co.uk/NGK-IRIDIUM-SPARK-BKR7EIX-BKR7E-IX/dp/B001GD5QTA

 

[TubbyTwo]

they are a heat range colder than the standard plug just to make you aware.

 

[Slimy]

Four of these works out slightly cheaper;

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=180529577149

 

[wayne lcr]

they fit bosch at the factory?????.

 

[t0m]

NGK iridiums

 

[GazMac]

whats this about heat range, can somebody please explain. my lcr has a standard engine.

 

[GazMac]

anyone please help with info on heat range. what happens if i use colder plugs?

 

[GazMac]

can anyone confirm if these definately work with a standard lcr 225. have contacted the seller and he is as much use as a chocolate teapot.

http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=180529577149

 

[ChrisGTL]

CupraCraig should have some results from switching back to NGK PFR6Q from the NGK Iridium BKR7EIX.

Me and CupraCraig got very poor results on AwesomeGTI RR day, so CupraCraig booked his car into R.S Tuning for a 3hr session of RR/Logs......

He is still massivly down on power for a LCR 225, figures of 240ish HP on a stage 2. And 204HP on stock map.

Bloke at R.S Tuning says there is something mechanicaly wrong with his setup, compression tests completed and came back fine.

He mentioned his NGK Iridiums and the tuning guy said these don't work well on the LC/LCR. Timing was out by 6 degrees so he told him to go back to NGK PFR6Q plugs, he is booked in next week so will get the results.

We will see!

 

[Mark300zx]

I have to admit to quite liking the NGK 7s but my car is virtually stock, I thought it was the denso irridiums that had the poor reputation?

Gaz if your car is stock just stick with the original heat range in the NGK plug!

 

[ChrisGTL]

I have to admit to quite liking the NGK 7s but my car is virtually stock, I thought it was the denso irridiums that had the poor reputation?

Gaz if your car is stock just stick with the original heat range in the NGK plug!

From what I understand all the Iridiums are not very well suited to the 1.8T setup. I have no proof yet though, but should know more after Friday.

 

[Mark300zx]

From what I understand all the Iridiums are not very well suited to the 1.8T setup. I have no proof yet though, but should know more after Friday.

Will be interested, I have heard of problems with Denso but not NGK, , how are you going to test them?

 

[james walker]

hmmmh..... i use bkr7e with upto 6degrees timing pull... wonder if going back to the NGK PFR6Q will help.

 

[ChrisGTL]

Update:

Car is now fitted with stock NGK plugs and pushing 257HP. No timing pull at all, boost curve a lot cleaner.

So plugs do make a difference from my experience. Still down on power slightly but the RR is warm, so no doubt the open road will show even more increase in power.