i know you can't know for sure unless you dyno it, but, how much horsepower you guys think my car is putting out...

it's rated at 102hp stock

mods - megan 4-2-1 header, test pipe, 2.25 catback exhaust, AEM short ram intake

also, i'm using NGK iridium spark plugs, and mobil 1 synthetic oil, if that really means anything

 

what kinda car you got man?
i just got some NGK sparkplugs in my car too, as well as a new 4-2-1 header.... but do the spark plugs actually make a difference? my cousin said it had to be NGK or else i owe him beer. i do what he said


edit: nvm what car you have, lol... totally didnt see your signature

 

You should take those iridium's out unless you need the colder plugs for a turbo setup. Your prolly gettingsome backfire's. Go with the standard copper plugs recommended in your manual.

My guess is somewhere around 8-10hp if your lucky. Older engines aren't going to respond aswell as it being a D-series engine to begin with.

 

Om my Si 00 I'm running NGK Laser platinum spark plugs. These are higher ratedthan the Iridium plugs. Well that's what my manualasks forand that's is what my mechanic also told me to just run the Laser platinum... A set of those plugs cost me about 55.00 dollars

 

His car is a dx.... i'm running platinums aswell, but I'm thinking of going back to copper because I get some backfires now and then.

 

but your is an ex...I don't think an Ex asks for those plugs. Yeah I don't get backfires at all

 

I just looked it up on the online service manual because my car didn't come with one. For d16y8 (EX my car) NGK ZFR5F- 11 V-power. So I guess my platinums are right. For b16a2 NGK PFR6L-13 (Double platinum's)

 

baaahh, just buy the regular ngk's that cost 2 bucks a piece, those expensive ones won't make much of a differece. My car really likes ngk's that are two step colder

 

i wouldnt say more than 115hp rite now, and thats being generous

 

That's being more then generous. i wouldn't say more then 102 at the wheel