Standard Boost

[PukkaSilvia]

I used those orange hotwire leads on my 8v engine and they deteriorated and were nackered in under 2 months. So i bought some Magnacore leads and i did notice the difference in engine performance.

As Shaun says and set the plug gaps to .9

Thats a very healthy bhp figure you have there considering. Exhaust and air filter modifications will help just as much as a boost increase

[umpkin]

i had a set of orange hot wires too once, and everytime it rained without fail it would only run on 2 or 3 cylinders once spent a whole week on half the engine firing, sounded like an old derv......

i got some genuine nissan leads, that was 6 years ago, and they have never misfired yet. worth paying the extra money

[Ronin]

The leads were made up by an auto electrician for me and replaced when it started missing as I thought it could be the leads. The only other thing I can think it could be the is maybe the BOV as this is an unknown type and make being on the car when I bought it and as my co2 readings are all over the place on tick over I don't know if this if faulty.
As for the exhuast and air filter they have already been changed for a cone filter and a 3 1/3 inch system straight through from the turbo. I have an intercooler fitted just need some pipe work to plumb it in now.

[wacomuk]

try putting a better earth on the coil. this has happened to me afew times

[adzs12]

Thats good advice, i moved my coil as i found the standard posistion is a bit of a water trap from the top of the inner wing. and i added a second earth n touch wood i aint had anymore problems with it since

[Ronin]

When I put the new coil I cleaned up where it mounts so I might try adding another earth and see what happens.

[PukkaSilvia]

3 1.3" Thats the bigest bore i have heard of so far on a s12!