Popping Sound At 5000 Revs

[r32matt]

When i reach 5000 revs and i am fully accelerating the car will make a popping noise and jump a bit. The noise could happen once or could happen 4 times up to around 6000 revs. When it makes this noise the car jumps a bit but not much at all. Could this be the spark plugs or something else?

Thanks

[The Dan]

could be that or coils

do a resistance check on the coils

[siddr20]

Hmm im guessing backfire?? Running to rich maybe??

[CATKICKER]

yeah, my bet is your coils...

are you running boost past stock level?

[MKDR33]

might be ur coil packs..

this thread might help ---> http://www.skylinesaustralia.com/forums/in...howtopic=119403

[Thunderbolt]

What fuel pump you got? Could be running lean.

[r32matt]

I had a Turbotech Boost Controller which i just put on the other day, so i removed that to see if it helped. I think it did a bit casue now its running standard boost. It is still happening but only sometimes. I have a standard fuel pump and running on BP Ultimate. When the car is at idle it doesnt sound like its running smooth, sounds like it is missing everynow and then. I think it might be my coil packs or I might need some new NGK spark plugs?

[Chris32]

Could also me a dodgy crank angle sensor