spluttering help!!

[twoquik]

Ok this is my issue and before ppl say do a search i already have but have found nothing good.

On the weekend i changed my spark plugs to bcpe7s.

and i changed my battery.

Now when i drive at full throttle above 10 pound when i hit 5000rpm the car starts spluttering from the exaust. and i get no more power. I have never had this before though.

When i put the boost on 8 pound i dont get the spluttering i dont think.

my mods include.

hks air filter

hks zorst

blitz id3 boost controller

just the basics.

Can someone help me please.

[Zahos]

search again, this has been covered over 10 times...

try:

misfire rich

hesitation

missing

in your search.

Here are a few examples

http://www.skylinesaustralia.com/forums/sh...ht=misfire+rich

http://www.skylinesaustralia.com/forums/sh...ghlight=misfire

http://www.skylinesaustralia.com/forums/sh...ht=misfire+rich

http://www.skylinesaustralia.com/forums/sh...ht=misfire+rich

[Mr GTS4]

check knock sensors on the block!!!!!!!!!

[RedS14T]

Recheck your plugs, 1 of them may have cracked.

[TTT]

what is the gap on your spark plugs?

0.8mm seems to fix 95% of these problems of RB25's misfiring on 10psi at about 5000rpm.

[twoquik]

my plugas are gapped at .8 yeah, i will have a play on the weekend, clean my afm and reset the ecu. see if this works

[knore]

In a typical control procedure;

You changed 2 things: Battery and Spark Plugs.

Battery is irrelivant once the car is started so its not the battery.

It must be the spark plugs.

[Mcboost]

may also be a fuel/boost cut