Dude, that is a ridiculously small gap....probably doing more harm than good.

what would u gap them to

Quote: Originally Posted by REVENU i replaced 8mm for 10mm leads thinking it would give greater spark but i will change back for the sake of experimenting. My plugs are NGK BCPR6ES-11 and gapped to .8 as i have done for years. surely it wouldn't be fuel filter would it? im gonna replace it today anyways cos its been a while since i replaced it last. Its interesting. I used to use NGK BCPR6ES-11's straight out of the box and not have a problem at all. Then I got my "popping" on boost problem. changed everything and only when I changed the plugs for a different brand of plug, did it fix the problem. I am now using Bosch Plugs. I wonder if NGK have a bad batch of these plugs floating around?

ok changed the fuel filter and it made things a tiny bit smoother. put the 8mm leads back on and no change. so Insanevl is there any chance you know or could pull out number 1 spark plug and get me a plug number for those bosch ones please? Car is going back on the dyno next week anyways cos i think it make be somewhere in the fuel mapping.

check the connections to the injectors sometimes the pins pop out on 1 and dont make contact proply

Quote: Originally Posted by REVENU ok changed the fuel filter and it made things a tiny bit smoother. put the 8mm leads back on and no change. so Insanevl is there any chance you know or could pull out number 1 spark plug and get me a plug number for those bosch ones please? Car is going back on the dyno next week anyways cos i think it make be somewhere in the fuel mapping. Bosch Platinum Plus - FR8DPX (P4-6 blister pack)

Quote: Originally Posted by InsaneVL Bosch Platinum Plus - FR8DPX (P4-6 blister pack) Cheers buddy i will pick some up tomorrow..... did you gap them?

Nope. Used them straight out of the packet. If your running anything more than 15psi boost - probably a good idea to gap them down to 0.8mm from the standard 1.1mm anyway. If you REALLY want to spend some money on plugs - pick up a set of Bosch Double Platinums. Apparently they are good for turbo/supercharged high performance use and last over 100,000kms as both the electrode and point are solid platinum. Not sure how much they are though... i'd say a fair bit more exxy than the PP's i'm using.

Try cleaning dizzy and AFM connections.

Quote: Originally Posted by pvokme ha i got that poping problem to it starts poping as soon as it hits boost i have nealy replaced every thing to try and get it runing smoth just wondering iam runing high mount wit a t3t4 i got a rajab plinum with an xf throttle body and a stage 2 crow cam standard turbo computer and standard turbo injectors just wondering if the throttle sencer is out half a turn would that be a problem cause i had to change the pin to suit the sencer. I had the same problem, mine ran for 2 days after i bought it then it started to pop like a bitch soon as i hit boost.. i replaced everything from fuel pumps reguators, spark plugs tb sensor o2 sensor leads and it all turned out that i got 2 dodgey AFM's in a row it wasnt till i put the 3rd one on that it went properly. since then it has been driven for 10mins and its now decided to charf blue smoke out of it, think i got stiched by the old owner. Quote: Originally Posted by REVENU i replaced 8mm for 10mm leads thinking it would give greater spark but i will change back for the sake of experimenting. My plugs are NGK BCPR6ES-11 and gapped to .8 as i have done for years. surely it wouldn't be fuel filter would it? im gonna replace it today anyways cos its been a while since i replaced it last. I have been told by the fella who tunes my 355 said that with turbo motors you should actually open the hap not close it !!

Quote: Originally Posted by ovq01 I had the same problem, mine ran for 2 days after i bought it then it started to pop like a bitch soon as i hit boost.. i replaced everything from fuel pumps reguators, spark plugs tb sensor o2 sensor leads and it all turned out that i got 2 dodgey AFM's in a row it wasnt till i put the 3rd one on that it went properly. since then it has been driven for 10mins and its now decided to charf blue smoke out of it, think i got stiched by the old owner. I have been told by the fella who tunes my 355 said that with turbo motors you should actually open the hap not close it !! you should never open up a plug gap unless you are beefing up your ignition system. factory gap or smaller, forced induction tends to blow spark out so you need a smaller gap so it jumps easier but you get a smaller spark