High compression on a turbo car is asking for trouble unless you've got a serious standalone unit to back up the tune. Based on your HKS alphabet soup you have a blown engine waiting to happen with 11:1 compression. The fuel cut defencer will not allow the engine's computer to initiate fuel cut...
I don't recommend anything above ~450 HP as a daily driver, it's going to be somewhat unreliable compared to a stock setup (correctly put together) and hard to drive around without getting yourself in trouble, killing yourself and/or killing others in the process.
Older style (previous visual looking SSQV's made before the recent face lift) ones started off as being adjustable. I think the good Doc has a couple (IIRC). Later on (don't know when really) they changed the backs of them to a non-adjustable version (probably because people where either setting...
You should have a head gasket thicker than 1mm, probably 1.5mm to 2mm to keep compression down. I do not recommend Iridium spark plugs, NGK copper plugs are just fine. The stock fuel rail is good for over 800 HP. Stay away from the HKS FCD, it can blow up your engine very easily if you don't...
MDC Motorsports or Driftmotion both rebuild and upgrade stock CT-26 turbos for our cars. The most popular upgrade would probably be the 57 trim CT-26. You can make over 400 HP on that setup with supporting mods. I'd say you'll be pretty happy with that.
Check my Mods on my profile. With the stuff I actually have installed, I would think I'm in the mid or low 14's, but I've never dragged the supra, so that's just an edumacated guess.
Wrong. I have the older style design SSQV and it's non-adjustable. It's got that nice yellow HKS badging on the top of it, came in the big black and purple HKS box, has the nice ooga booga Japanese writing that I can't read, and even has the hefty price to go along with the HKS name ;).
:werd: on the 8.5, I'll be getting a slight overbore anyways, so it should be higher by a bit. I'm not too keen on having something closer to an NA stock comp.
Make sure that there's actually a nut there before you go cutting. I'm not sure, becuase I've never dropped my pumpkin, but just confirm with some of the guys on here that have done it and have had similar problems.
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