NEED HELP PLEASE!!! with my sr20det spits and spuders.

[Str8silvias14]

well i bought the car from a friend and it was running great like a freaking champ. but then i had the bright idea of doing a tune up on it and i replaced the oil filter, oil, and spark plugs. I went wrong when i changed the the plugs from heat range 7 to heat range 5. thats when it started to spit and sounded like it back fired. i changed the plugs to heat range 9 to see if it would get rid of the problem and it didnt so i put in the originals heat range 7 and it just minimized it but its still there.

can anyone help???

[rc1honda]

Checkl the plug gapping. You said you put the orginals back in but who knows. i think you want it at .30 for the 7.

[luvsr20]

depending on how much boost you are making (13psi- above), you may want to have the gap .028

[fliprayzin240sx]

Why the fuck would you run 9 heat range spark plugs? Rule of thumb...6 for stock, 7 more slightly modded, 1 higher heat range for every 100 hp you make. For you to run 9s, you better be making over 450.

Go look for some BCPR73S-11s, double check the gaps at .028-.030.

[Str8silvias14]

the reason i changed it to 9s were cuz a friend that had the same problem told me it worked for him....
my boost is at like no higher than 8 psi
i cant gap the plugs cuz there ngk iridiums.
what i think it is also is it might be my coil packs sense they look really bad...

[fliprayzin240sx]

You can gap iridiums, just be careful not to nick the tips...so again, stock setup, stock boost, 9s will make it run like shit. BCPR7ES-11s, $1.25 per sparkplug...fuck all that noise with iridium shit, cheap enough for you to order a box of them for the price of 1 iridium plug.

[Str8silvias14]

im trying to find that spark plug i cant find it. your exact part number im putting everywhere and no one seems to reconize it.

[slociv]

try bkr6e or bkr6e-11 and regap