Non-protege related S/C questions

[P-rotege]

On my truck (Ford F150, 5.4L Vortech Supercharged/intercooled) I been recently having a lot of issues with my spark plugs. I changed the factory Ford Motorsport Platinums at 62,000mi the other day. I replaced them with Bosch double tip plats. They sucked, truck ran like ****, barely idled, died at a couple stoplights, plugs fouled within a week. I replaced those with bosch single tip plats. I figured the double tips sucked because the gapping was incorrect, and you cannot alter those particuliar plugs. I gapped the single tips I am currently using to the SVT Lightning gap specification @ .058. So immediately after installing the plugs my truck felt great, instant response, immense power, couldn't get the tires to stick through 1st, 2nd, and part of 3rd. Now my truck is beginning to idle a little poorly again, not like it did with the other double tips, but not perfect nonetheless. The power is not there like it was either. I think my plugs are fouling again. I don't understand this, is the gap too big, or too small. Someone suggested that plats are no good for supercharged applications, and I should use iridium plugs. I never touched any of the other stuff, and she ran fine before, just not as much power. Oh and I just got my V1 rebuilt about 800miles ago.

Any suggestions?

One other question, the truck runs a granatelli MAS, and all the vortech FMU crap, with factory injectors. I ran 6psi for a while and just recently bumped it to 10psi. Should I install bigger injectors, or will there be minimal/no improvement?

I know this is unrelated to pro's but I really need help on this and most people I have asked haven't been much help. Vortech told me I shouldn't alter anything. They said if I change anything, I.E. the pulley, and the larger bypass valve they can't help me because they don't deem it "safe."

Thanks in advance

[*PL*]

In our dsms (see TURBO here) plug gap is like .28 ! and any bigger make **** like you have. Maybe check out with other Ford S/C guys what gap they use.

Second: I was always told to use ONLY motorcraft plugs in Ford engines ! And it really makes a difference !!!

Good luck

[95ProLeila]

A lot of the turbo Subaru guys are running Iridium plugs (I think they may even be factory spec, but I'm not sure). Nobody ever mentions using plats.

[MD323]

id say the gap was wrong, if they are indeed fouled than your not gettin proper ignition.
clean them, gap'em down to .50 and see if theres a difference, if there is you might experiment alittle with the gaps

[elscotto80]

Um, I hope you people mean .050, and so forth. .5 is big, like really big. I have iridiums on my turbo setup, they work very well.

[MD323]

Um, I hope you people mean .050, and so forth. .5 is big, like really big. I have iridiums on my turbo setup, they work very well.

my bad, id meant .05

[P-rotege]

I'll try to regap them if it begins to act up really bad again. I don't know what else could be causing the problem. I take iridium plugs are better than platinum? Any suggestions regarding injector size?

Thanks for the previous input.

[95ProLeila]

I'd hesitate to say iridium is better than platinum, or vice versa, from what I understand, iridium is the appropriate thing to use in a F/I application.

[*PL*]

I have had Iridium plugs, I prefer changing regular copper plugs at every 1-1.5 year at like 1.50$ per plug than changing the iridium at 6 $ per plug, I saw no difference between both

[BuGS]

Better Plugs. You need better plugs.