Setup prior to last week. No pinging or detonation in ALL temperature conditions:

JDM Stage I & II using NGK TR6s -

Cobra Waterpump
Boost Bypass
Single Blade TB
Electric Fan Kit
Ford Racing Breather Cap
Old style cat-back exhaust
Line Mod Valve
Dual Program Flip Chip - 2 yr old program/not very aggresive
Cold Air Kit
2# lower

Ran a best of 12.801 @ 108.92 - 1.84 60' on F1s

Current setup as of last Saturday. Still running the NGKs:

Added:

#4 lower
#1 upper
Factory Tech VB
New, more aggresive burn on the chip - Jim said it's his most popular program for trucks in the 12.9 - high 10 sec. range. 50/50 race gas mix required on Side II.

I've only gotten into the boost a little bit with the NGKs in. No signs of pinging or detonation. Temps have been anywhere from 60 - 70 degrees.

I ordered some Denso IT22 because I was told they run colder.

I'm just looking for some feedback as far as what you folks are using plug-wise and if you have any pros or cons about the Densos VS. NGKs.

Thanks!!

 

I run the Denso's IT 20

 

Thanks, Gator.

 

up up up

 

IT22's are a good choice as are IT20's

I had a bit of detonation during the super hot/humid days of summer last year. A majority was caused by the 'safe' file on the chip as another file did not duplicate the issue.

Bob

 

Thanks for the feedback, Bob.

Dan

 

what is the difference with the denso it20's and the it22's?
I am also in the market for some new plugs. I currently have tr6's.
thanks, Shane

 

I personally run IT20s with my 4# but I've heard many run IT22s...

Sal told me Denso IT20s @ .036-.038 was ideal for my 4#er.

 

The 22s are colder than the 20s.

I run NGK BR7EFs(5 lb pulley) with Denso IT24s waitin' on the bench.

Dan

 

I'd run what JIM said. I'm guessing he said TR6's gapped at .034 or something...

 

IT-22's

 

I run the it 22's with an 8#lower and 1 #upper gapped at .034

 

I told him that I was currently running the TR6s and planned to go to the Densos. He was in sort of a hurry, and didn't really say good/bad/indifferent.

Dan