Spark plugs wise I'm running NGK Iridium 7's fine so far at 450awhp. Very much doubt I'll need to go to 8's, ever.

As for my catch can I've chosen the drain back to sump option. Any moisture in the oil that is returned to the sump will evaporate away with the heat of the oil.

I've chosen this option as it's not unheard of for catch tanks to fill with good oil on hard launches and hard cornering. That's oil that never sees the engine again with a non return can. For obvious reasons you can't do that too often.

__________________
605whp
Quarter Mile in 10.9 seconds @ 135mph /217kph
0-100 kph 3.2 seconds

I run 7's too..........8's will probably foul on cold E85 starts - but what would I know?

__________________
[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

50ml was over distance of 600km, daily drive.

Ive already order the plugs, I will give some feedback once I got it tuned.

using the Perth-WRX mobile app

__________________
MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport

Feedback not needed, been there done that - have the T-shirt.

__________________
[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

8's will be more hassle than they are worth and you simply don't need them. 7's will be perfect and you could even use a set of fresh 6's.

But you don't need 8's. Did I say you don't need 8's? If I didn't, you don't need 8's

__________________
605whp
Quarter Mile in 10.9 seconds @ 135mph /217kph
0-100 kph 3.2 seconds

I got 8s in mine cause it started missing the day before my last tune was a sunday and all i could get in mandurah... once driving was great but e85 cold start shoot me now

using the Perth-WRX mobile app

Haha. I will stick with 7 for now. thx.

using the Perth-WRX mobile app

__________________
MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport

+1 DO NOT NEED 8's Take the time for oil to warm up to operating temp before driving and you should have no water in the system .

Car was retuned with Okada coil and HKS racing plug(Mao has sent the order, and HKS replied my email saying it's suitable for e85. so I decide to give heat range 8 a shot).

With a hot tmic (heat soak) car made 410whp at 1.4 bar aiming 11.4-11.6 afr, with zero knock court. Water spray was disabled since bonnet was opened.

The new coil seems made the mid range better on light to mid throttle, and no more misfiring. I will keep an eye on spark plug fouling.

Attached Thumbnails

 

__________________
MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport

Come to the plex on the 9th.

__________________
Bye bye betty blue. Hello F6.