Miss at 5000revs on boost

[Pappu1]

ah dang..hopefully can get it when ur mate comes over next ya

what u end up putting on?

abt scan - yea sometimes it logs a code but does not always flash a cel

maybe the ecu has a list of non cel flas codes i suppose

[Swindog]

 pappu said:

ah dang..hopefully can get it when ur mate comes over next ya

what u end up putting on?

abt scan - yea sometimes it logs a code but does not always flash a cel

maybe the ecu has a list of non cel flas codes i suppose

I had spoken to him abuot it last night and I got up early before he left but morning haze maybe? Forgot about it before he left. Ill see if I have to come up this week and ill throw it in the ute.

I got an HKS off marc but the muffler has blown its guts out so thats a good waste of money too!

[JWDRPN]

getting a scan tomoro hopfully steer me in the right direction.

will keep you posted

[JWDRPN]

ok just got home from the mechanic

obdII hooked up nothing at all on there so he cleared the codes (was told that was the same as a reset) im guessing its not

back to the drawing board

my next plan is to change all the plugs

[Timmah]

Have you ever used Subaru Upper Cylinder cleaner? A can is only around $25 and will clear lots of built up carbon gunk. It might help. But I'm really just pulling this out of my butt lol

[Swindog]

A reset is a reset.

Not just clearing codes.

[Stoffa]

 JWDRPN said:

ok just got home from the mechanic

obdII hooked up nothing at all on there so he cleared the codes (was told that was the same as a reset) im guessing its not

back to the drawing board

my next plan is to change all the plugs

you dont need to change the plugs if they're only new, just get some feeler guages and regap them to the correct size

[JWDRPN]

by being new is about 6 months now and was done by the previous owner..

il do the upper engine clean i cant see it as having an downsides.

[Stoffa]

that stuff works well

[STiNGR]

What plugs are you running?

[JWDRPN]

good question old owner did them so im guessing cheapest sh*t.

i only took em out to check the gapping

[Stoffa]

the cheapest shit work fine, they just need changing more often

[Pappu1]

Let me know if still issues afte putting in proper gap sparks

0.7-0.8 is stock spec ok

I personally run 0.76 but as long as u in range it's good

[WRXONP]

If its copper plugs then they probably past their use by date - bkr6e or bkr7e (depending on boost and how u drive it) work well and are cheap - good for 5-10k before they start to break down - cheap as only 28 for all 4 at retail price - come factory gapped to .8 unless stated as bkr6e-11 (that's 1.1 mm gap)

[G-unit]

my platinum's were cheap aswell, $11each

[STiNGR]

I had same issue. Tired cleaning air flow meter, new fuel filter and coil pack then found that it was a plug.

I put these NGK PFR6B plugs in. Factory gapped at 0.8. Have worked wonders! Your looking at around $30 per plug, but well worth spending the money.

[Timmah]

 STiNGR said:

I had same issue. Tired cleaning air flow meter, new fuel filter and coil pack then found that it was a plug.

I put these NGK PFR6B plugs in. Factory gapped at 0.8. Have worked wonders! Your looking at around $30 per plug, but well worth spending the money.

Fortyone, a sponsor here, sold me a set for $70

[STiNGR]

 Timmah']

[quote name='STiNGR said:

I had same issue. Tired cleaning air flow meter, new fuel filter and coil pack then found that it was a plug.

I put these NGK PFR6B plugs in. Factory gapped at 0.8. Have worked wonders! Your looking at around $30 per plug, but well worth spending the money.

/quote]

Fortyone, a sponsor here for a set for $70

JWDRPN If I were you I would snap up that deal!

[WRXONP]

Like all plug conversations - it depends on the owner - if you feel like changing your plugs more often go for coppers - copper is a better conductor than platinum or irididium - platinum and iridium do last longer that's all - its not a bright idea to change plugs to the longer lasting ones and just forget about them

Plugs tell a story - they're the window to your engine - no shit quoted from mr rick himself

[JWDRPN]

ripped all the plugs out!! they look like they were running a little hot.

swaped them out for a set that runs a bit colder.

will be interesting to see how that goes

[Stoffa]

For fault finding its probably better to replace them with the factory ones. i was told until you run 300kw. not to bother.

[WRXONP]

Stock plug is 6 - general rule is every 100hp go another heat range - but 7 is allways your safest bet when upping boost with more mods - colder plug helps prevent pre ignition

[Pappu1]

stock v7 is 7 ngk

but using 6 or 7 really wont be of any difference if ur still on a stock tune and turbo

as long as the plug gap is 0.7-0.8 thats the more important bit for now

 WRXONP said:

If its copper plugs then they probably past their use by date - bkr6e or bkr7e (depending on boost and how u drive it) work well and are cheap - good for 5-10k before they start to break down - cheap as only 28 for all 4 at retail price - come factory gapped to .8 unless stated as bkr6e-11 (that's 1.1 mm gap)

as been stated before ...just gap it correctly ya - also could just be a cracked insulater on the plug that can also cause miss issues on higher rev/boost

and if its not plug then could be coil

a mate had a similar issue and turned out to be 1 coil which we replaced yesterday - works sweet now

\usually ecu will log it as well - depending on what sorta scanner u use as i believe not all will read hidden codes (or so i been told)

have u made sure all ur boost hoses are tight and bov tight etc

a leajk can also cause surging that can feel like a missfire once boost builds up..i had that when my fmic piping silicone was slightly loose..only missed/surged after 5000rpm ..

that is a free fix so check all hoses

[G-unit]

 pappu']

stock v7 is 7 ngk

but using 6 or 7 really wont be of any difference if ur still on a stock tune and turbo

as long as the plug gap is 0.7-0.8 thats the more important bit for now

[quote name='WRXONP said:

If its copper plugs then they probably past their use by date - bkr6e or bkr7e (depending on boost and how u drive it) work well and are cheap - good for 5-10k before they start to break down - cheap as only 28 for all 4 at retail price - come factory gapped to .8 unless stated as bkr6e-11 (that's 1.1 mm gap)

/quote]

as been stated before ...just gap it correctly ya - also could just be a cracked insulater on the plug that can also cause miss issues on higher rev/boost

and if its not plug then could be coil

a mate had a similar issue and turned out to be 1 coil which we replaced yesterday - works sweet now

\usually ecu will log it as well - depending on what sorta scanner u use as i believe not all will read hidden codes (or so i been told)

have u made sure all ur boost hoses are tight and bov tight etc

a leajk can also cause surging that can feel like a missfire once boost builds up..i had that when my fmic piping silicone was slightly loose..only missed/surged after 5000rpm ..

that is a free fix so check all hoses

the thing is theres so many hoses lol i also have a set of coils 2 replace, mine were checked tho and said were fine, but will try these 1s,

have u checked ya fuel pump?