snowy710

hi bought a 1996 wrx sti wr1 had a little miss when boosting got told may be plug breaking down changed plugs 3 weeks ago ngk platinum (pfr6b) got told may need a 7 rating plug??? done a thousand miles perfect now and again slight miss under load only when i boost it plugs again????????

snowy710

its running 1.5 bar approx 340bhp

joz8968

iTrader: (13)

Did you gap them to 0.7mm or 0.65mm? Ideally the "7s" at 0.65mm would be good to run with your spec...

snowy710

no didn't gap them was i supposed do?? thoght u just put them straight in? would i benifit in putting 7's in read some good things

joz8968

iTrader: (13)

Ah, they rpob might not be gapped small enough then. The very biggest gap is 0.8mm, but as said, ideally with that boost level, 0.7mm or 0.65mm will be appropriate. What happens is the upped boost (greater force of air) can sometimes blow the spark out... hence your occasional 'misfires'. I'd defo whip 'em out and try regapping to the aforementioned measurement....

joz8968

iTrader: (13)

But whilst you'd be removing them, then I'd replace with the 7s instead, as well ...

snowy710

thanks for advice ill pick a set of 7's up today ill check gap 6.5 or 7mm which would be beter for me thanks

joz8968

iTrader: (13)

Go for the 0.65mm - that way you're not leving anything to chance i.e. if it still does it, then you can continue looking elsewhere...

Mine are at 0.65mm and I'm only running 282bhp at 1.3bar, but tailing to 1.1 at the top end. No issues - runs fabulous lol.

snowy710

hi just fitted the 7's drove well but missed on way back but a pipe came off that black cylder which clips on the rad big round thing what is it?? thanks

joz8968

iTrader: (13)

Do yo mean that upright cylinder on the driver side near the rad? I think that's just a charcoal cannister, where oil breathers go to(?)

STI_Baly

iTrader: (23)

Hmm.....so its still misfiring?

what ECU are you running on the car? have you got a aftermarket fuel pressure regulator?

Carbon cannister info and what it does and where pipes come from>>

http://forums.sidc.co.uk/index.php?s...&#entry1349656

snowy710

just took it back out for a run after plugging that breather thing off the canister seems to go ok now not sure what ecu how do i check???

STI_Baly

iTrader: (23)

Your ecu is located in the passenger footwell....take some pictures of it and put them up, if possible undo the cover screws and send some pics of the ECU board inside...

Have you got a boost controller? if not how are you controlling the boost? is it adjustable?

snowy710

there is a boost gauge but not a boost controller ill take a pic of ecu today

snowy710

snowy710

snowy710

joz8968

iTrader: (13)

Well that's a STi v.2 275PS ECU (that's if the innards match the what the casing's "6K" label says ). But yes, that's the correct OEM ECU for a MY96 STi.

So if you're claiming that you're running 1.5bar, then the main chipset must be an ESL Live daughterboard with remap to suit... But to me, the ECU looks stock!

snowy710

snowy710

joz8968

iTrader: (13)

Did the previous owner say to you that it was "340bhp at 1.5bar...."?

What mods have you got? If you are running 340bhp at 1.5bar, then the least you'll have is a larger TMIC or FMIC, at least 440cc injectors, uprated MAP sensor and prob a decat d/p too.

joz8968

iTrader: (13)

Ah, so you have what appears to be some kind of "piggyback" Superchips ECU intercepting device? Do you know the details of this device? Presumably, it's had a generic uprated map flashed to it?!

snowy710

not rely sure de cat i know off he said forge pistons remapped not sure what else it does pull well

joz8968

iTrader: (13)

Hopefully, someone (a specialist) will know exactly what that Superchips device is/does and will reveal all. Plus whether it's actually suitable or not!

snowy710

hopefully is it safe running 1.5bar does that super chip raise the boost?

joz8968

iTrader: (13)

It's prob just intercepts info for fuel, timing and boost and has been flashed with a generic map i.e. I'm not aware of any Superchips products that would allow a custom bespoke map to your car's specific mods. So, unless others know otherwise, then I'd be inclined to junk it and invest in ESL Live, PFC or Simtek and get it mapped properly. Certainly for peace of mind!

It could just be contributing to your missing issue.......

snowy710

i got to sell the car next month got my 4 child being born end of may so getting it sorted now ready to sell mot it next month any idea what sort of prices they worth 96 wrx sti wr1 70k

joz8968

iTrader: (13)

There wasn't a "WR1" STi v.2. The WR1 was a New Age post-MY03 "blobeye" special edtn.

The only special edtn. based on a STi v.2 was the "555".

snowy710

i thoght that but that whats on the log book strange??

joz8968

iTrader: (13)

Ah, the V5 sucks the big one with regard being accurate re grey imports.

DVLA are tw*ts when it comes to identifying 'em. Esp. Scoobs with their myriad variants/special edtns.!!!

Post up a pic of your car mate - it'll be obvious if it's a 555 or regular STi v.2...