So the car runs absolutely amazing driving calmly, well today i was driving and decided to get on it a little bit as soon as i punched it car back fires like crazy constant pops, any idea what this could be?

 

Plugs replace and gap them correctly

 

yeah i figured it was the plugs i took the coils off and got to the plus and was about to remove them but i didnt have the correct size to remove them so i couldnt. what plugs should i get? ill order them now

 

okay thanks for the help guys! any other suggestions for good spark plus?

 

i like ngk iridium they are the ish in my opinion

 

Mine was doing the same thing since it has gotten colder now, I turned my boost down by 2psi and regapped my plugs from .28 to .22 and problem solved. I can punch it now and it runs perfect. Good luck!!

 

hmm i have a mbc how would i turn it down 2psi? and how do you regap your plugs dont you need a special tool? ive never done that before

ive also noticed i was running 23.8 - 24 psi and now im maxing at 25 psi on the stock turbo

 

u can buy the tool at autzone i believe. I just do it the wrong way carefully which is smash them against something hard lightly. also mkae sure u gap them to the right gap for a VIII

 

THANKS! quick question, i see you drive a 2005 civic si turbo... my friends got that car completely stock he just bought test pipe and headers, hes gunna wanna do a turbo any pointers on where to get the turbo and all the other stuff hes gunna need to do the turbo so i can forward it to him and tell him what to buy

 

check out hondatech.com

 

ok! whats the right gap for them?

 

so i turned down the boost a little bit and it stop doing the back firing, but now i have another problem, the car lost a decent amount of power throughout the whole rpm range, so i turned the boost controller back to where it was and no matter how much i turn it, it wont go back to 25 psi where i was at. im currently stuck at 19 psi right now. i brought it down a little bit and it was at 19 when i brought it down, so i figured ill bring it back up a little bit to get the power back and nope it wont go past 19.

 

Anybody?

 

Hmm not sure why you cant get the boost to go back up by adjusting the mbc, possibly the mbc is damaged some how?

 

driving the evo today back from mountain creek, well before the drive i lowered the boost to about 19 psi from 26 psi anyways i was driving there and basically noticed the huge loss in power car was hesitating throughout the whole rpm range i guess due to not as much boost well i warmed up the car before we left thge mountain for the day and i decided to raise the boost a little bit well i turned the knob and got in the car and started driving did a second gear pull and hit 19 psi as i was at before... i pulled over turned the boost up a little more and same thing 19 psi... anyone know why?