stock 1jz spark plug gap bkr6ep

[pete05]

I didnt know the stock BOVs were that bad , i have to say mine feels quite laggy down low.

[whatthe?]

Those stock 1JZ BOVs are a bastard, mine would leak all the way up until around 1-2 PSI and eventually seal. Made it a lot slower at building boost.
I ran a piece of hose from the stock BOV's output into the cabin for a laugh once, and went for a drive while watching the boost gauge, you could see it struggling to build boost, and feel air rushing through the BOV's output, before eventually sealing up. When I backed off the throttle it blew the hose clear out of the cabin onto the road lol

Plugged off the stock BOV location and fitted a Turbosmart Dual Port BOV near the throttle body and it has improved things quite a bit.

How do you identify a BOV leaking at 1 psi? What does 1 psi of boost feel like rushing into the cabin?

[Ribfeast]

It feels warm against my hairy legs, and goes WHOOOOOSH!

[whatthe?]

lol. Should put that in a report and send to toyota so they can update their workshop manuals on 1J bovs

[JZA70 R]

ALthough Ive had no issues running Iridiums gapped to 0.75mm at up[ to 20psi so far for 8,000kms...

Never had any issues with my platinums fouling. I run 0.75-0.8mm gap at 18-20psi.

Thirded.