I have an 88 mustang gt an want to replace the spark plugs in it. The car is modified it has an msd 6al box, a msd coil. I also am running a 150 shot of nitrous with a pauls performance flip chip tune. It has NGK (BKR6ES) plugs in it with a manufacture heat rang of 6 I always thought that you were supposed to run colder plugs when you have nitrous. I also found out that the plugs in it are for alot of foriegn cars and are not like the factory plugs that come in a 5.0 mustang. I was wondering if you guys have any suggestions for me, I would like to thank you for your time.
You're right, you need colder plugs with the gas. Find a competent dealer of NGK and have them research them all and find the right one. Sorry, I can't remember what the number is but you should be able to find out.
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bkr7es is the next coldest plug... thats if ngk goes any colder with that plug type.... ngk >>> higher the number the colder it is...
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1996 mustang vortech v-2 sq blower with aftercooler 10psi, proffesional products 75mm tb and plenum,bbk long tubes,custom x-pipe,flowmaster cat back,3.73, optima red top in trunk,steeda clutch quadrant and fire wall adjuster,poly motor and trans mounts,alum drive shaft,maxium motorsports suspension,tubular k-member/arms, qa-1 struts and shocks,steeda cc plates,custom subframe connectors,welded torque boxes,t/a rearend cover,walbro255, b&m shifter/triax handle,sct tuner.90mm lighting mam
nitrous or blowin engines usaully run tighter gap like around .030 to .038........unless u got an upgraded ignition then u could run stock plug gap, with out fear of it being blowin out at higher rpms..........
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1996 mustang vortech v-2 sq blower with aftercooler 10psi, proffesional products 75mm tb and plenum,bbk long tubes,custom x-pipe,flowmaster cat back,3.73, optima red top in trunk,steeda clutch quadrant and fire wall adjuster,poly motor and trans mounts,alum drive shaft,maxium motorsports suspension,tubular k-member/arms, qa-1 struts and shocks,steeda cc plates,custom subframe connectors,welded torque boxes,t/a rearend cover,walbro255, b&m shifter/triax handle,sct tuner.90mm lighting mam
spark plugs !!!!!!!! 
