rthouck

I'll give the ngk tr6's a try? Know if autozone or advanced auto sell them? Anyone know anything about the E3 plugs. Do the make a colder plug for supercharged applications?

Triisomy21

I gapped my plugs to .035. That's what Timmay's instructions were. .024 Seems way too tight.

JD1969

NEVER ever use irridium or platinum plugs in any type of boosted or sprayed application. The tiny tip on the electrode cannot dissipate heat fast enough and can/will be a source of pre-ignition. The NGK TR6 is a good plug.

code3GT

NGK BR7EF's

rthouck

Whats the difference between those and the tr6's?

Ryan86272

I dunno, But i was told not to Use NGK. I heard that for N/A and F/I in a mustang to stay with Motorcraft's....... Jus what I heard, n e opinions let me know since im about to change them

exLT1to01GT

NGK TR6s--definitely go w/a copper plug usually one step colder unless you're using really high boost. One step colder would be good for your application and in most nitrous applications.

rthouck

So far everyone suggests the tr6's so its gonna have to be them....

code3GT

We ran the TR6's on the Mrs' 2000 GT with a Vortech V2-SQ at 10psi. We then changed to the NGK BR7EF's and they made a huge difference when we upped the boost.

97targa

TR55's are stock heat range......TR6's are one step colder......BR7EF's are 2 steps colder. I run TR6's gapped at .030" with 100 shot of N20 on a completely stock tune and car runs perfect! If you stay under 8 psi you should be absolutely fine with NGK TR6 plugs gapped between .030" and .035" Also, I would really reccomend changing them every other oil change! They are cheap enough anyways!