Spark plugs, which is the best one

[Jose Ayala]

I know this topic has been discussed plenty of times, but one more time please.



Which spark plug is the best for the ST 03, specifically?



I have used Bosch platinum since I bought it but looking for feedback.



Jose:unsure::unsure:

 

[shawn stonbraker 2]

jose, I have the Bosch +2's in mine and like them. No problems and they've been there for 25k+ miles. Little increase in MPG after changing from the OEM Motorcraft's.

 

[Paul H]

i have the autoloite double platinums with explorer expresse's jba wires.

i got a 106,000 miles out of my factory plugs and wires....

saw a difference when they were changed out.

if you are not going the "performance" way then motorcraft plugs and wires arent a bad choice either.

paul h

 

[Jose Ayala]

Thanks guys, I have some things on mine already, like JBA headers, cold air intake, XCAL2, so which one should I go with, Autolite or Bosch +4 plug?



Jose

 

[troy malone]

i tried the bosch +4,, not worth the money... been running SplitFire triple plat for 30K miles without a problem.. have them in my 88 Vette also...



troy

 

[Michael Lighthall]

I'm with stonemeiser. Just put the Bosche +2 in mine. Runs great.

 

[EddieS'04]

Forget the headers. You wont see enough performance gain on the trac motor to offset the price. The trac motor exhaust manifolds are very free flowing. Change the catback exhaust though.

 

[Todd Z]

Autolite plugs or motorcraft only.... Others are a waste of money...



Get a set of JBA wires OR Taylor Wires OR I believe our new sponsor sells performance wires for the ST...

Todd Z

 

[Tom Schindler]

I put nothing but Motorcraft plugs in my Ford vehicles. Too many times I have had to do the job twice because of the gimmick plugs I tried using.





Tom

 

[Rodger Tellefson]

I agree with Todd and Cayman, everything I have read here over the five+ years that I have been a member says to only go with Motorcraft plugs - period.

 

[Johnny O]

Either Motorcraft or Autolite Double-Platinums. Bosch +2 and especially +4's do not get along well with the Ford ignition system.

 

[Michael Lighthall]

Stonemiser and myself must be the lucky ones who haven't had any problems with them.

 

[shawn stonbraker 2]

Mike, the only problem I had was one worked loose. Can't say it couldn't happen with the Motorcraft or Autolites. Other than that, hasn't missed a bit. I guess we can just keep the faith.

 

[Ed Barlow]

Have the +4's, jba wires, mac, cat back: I like them, I noticed an improvement

 

[Gavin Allan]

The best plugs are the ones that have just been put in properly, gapped, anti-sieze, indexed, torqued.