not sure if this is helpfull, but as far as im aware, smaller gap means more consistent spark, bigger gap means bigger spark.

my EJ22 is 1mm gap stock, but I've pushed it out to 1.05 for bigger spark=bigger bang?

would have thought u'd get a bigger gap to chase more power...

CRUISN;180538 wrote:

Bigger gap with a turbo running high boost will blow the spark out.

Better yet, grab an MSD ignition box - they're magic.

Sorry for delayed reply, in response to generally everyone.

I am running a Apexi Power FC, I have Bosch Coils with Magnacor leads, however it is suspected the leads are in bad condition.



To 9880XR - that's more or less what I need to do, go up a heat range or 2 (I think I'm on 6 maybe 7 already) and reduce the gap by .05, and 21psi - I'm running a VF34 with P20 housing, turbo is capable of another 7 pound however it won't make much more power as it runs out of puff it might however fatten the band out a bit, so that will be explored... and if I blow it up, I'll move on to a td04z

To Vik - cheers for that, great read and has informed me much more!

cheers people.

rs guy;180906 wrote:

Leads are pretty much brand new

and have a 100K warranty on them

they have 10k on them

I doubt thats your issue

988OXR;180940 wrote:

I had issues out at the drag strip up in the high revs with the car doing all weird kinds of things so thats when we replaced the spark plugs. I can't remember the exact numbers but I think it is a PRF7b or g series spark plug. Change them over and see how the motor runs then.

As for your turbo, its all good to increase the psi you run but we found that ~19psi was the best results we could get out of the VF23. But either way, good luck with it Chris. Change the spark plugs over and take it down the track so we can see what she'll do. :neo: