Spark Plugs

[grscobra1]

Wondering what type of aftermarket plugs to use for better preformace. Any ideas:wtf:

[GaborVincer]

I would use DENSO plugs dyno proven for aprox 7 hp. platinum is O.K. but Iridium is better. I suspect that it will be up to you to see at your dyno shop to prove that their are HP gains. There are alot of ads that will sell you the world but I have been told the way to go is DENSO:tmb:

[grscobra1]

Thanks for the info. I'll do some more home work.:cbra:

[cr25ovet]

i only can tell you NOT to use bosch 4 + i tried it and my car ran like sh!t
i changed back to the original spark plugs and my car runs much better. :spinem:

[white venom]

my brother in-law, his brothers and i will only use motercraft, autolite or ngk plugs, according to his brothers ngk are very good

[Lumpydogs]

I installed the Bosch Platinum +4 Plugs on my '01 Cobra.
No problems thus far. It did take the Cobra computer a minute
or so to adjust to them. After that things have been great.

Don't expect noticeable performance gains unless your old plugs
are shot!

[BlownVenom]

i'm using motorcraft

[32V SVT]

FYI regarding Spark Plugs...
I was told by numerous people on the web about Bosch causing problems in the Cobra's... I went with Motorcraft Double Platinums... The car runs GREAT!!! Personally, I think OEM can't be beat when you're dealing with such an advanced engine... Plus if your vehicle is still under any kind of factory warranty, this should help keep you within factory spec as well...

[mach0ne351]

hey all
DONT USE THE PLATINUM +4!! I just got my 01 COBRA dynoed about a month ago...and it ran VERY RICH! i was porbably about -15-20rwhp. after the calculations i was 311 to the crank. and i did have a Densecharger Intake + bassani catted xpipe. i should be atleast 330 to the crank. so i got 269.1rwhp...pretty ****ty! they told me that the Bosch SP are ****. use the Stock replacement of Motorcraft. here are some vids of the dyno, and the technician telling me that the bosch sucks.

http://home.csumb.edu/p/piecykmarek/world/dyno/mareks_01cobra_sparkplugs.wmv

http://home.csumb.edu/p/piecykmarek/world/dyno/mareks_01cobra_dyno3.wmv

-marek

[SJ Cobra]

I'm running NGK TR6's in mine. JMS Chips and SHM both recommend them highly if you're blown. Gap @ .036.

====================
01 Cobra vert. #552 of 3384 build
SHM 575 longblock/ Stage 1 heads/ Blower cams
Vortech SC- trim w/ aftercooler
2.75 pulley/ 8 rib pulley kit/ 15psig
catted Magna Flow X-pipe/ Magna Flow cat back
MAFterburner/ Afterburner eFPC/ twin 190lph in tank F/P
FRPP alum. flywheel/ FRPP alum. D/S/ 4.30 final drive
SHM custom chip
T-56 six speed trans/ Pro 5.0/ Competition Eng. safety loop
Koni Sport adj. struts/ Bilstein shocks
Roush Argent 18x10 rear/ 18x9 front
Yokohama AVS Sports 295/35/18 rear/ 275/35/18 front
Brembo 4 piston calipers
PBR 13" vented/ cross drilled / slotted rotor
Baer 12" vented/ corss drilled/ slotted rotor
Goodridge steel braided lines all corners
Kenny Brown strut tower brace/ torque brace/springs/ xtreme matrix subs
Roush Stage 3 front fascia/ spoiler
Cervini Stalker hood/ side scoops/skirts/ bumper fascia
Auto Meter Phantom fuel press./ boost gauges
dynoed at 592rwhp/ 468rwtq:tmb: