Niran

These are worth checking out: https://www.trademe.co.nz/Browse/Listing.aspx?id=1623067144 Was considering them for my build. No upipe though .

You might be able to stock mount smaller EFRs. Rotating my setup for sure

PBMS have had some success with stock mounted bigger turbos. Pretty sure they hit 300kw with the last one. I'd personally go with twisted.

@gotasuby how does the physics of that work when you have an extra port to deal with?

Haha didn't read the whole thing. Most of the tech is in the first few pages Get the 1000hp capable one @Batbaruman

If you're into this kinda stuff, have read through this doc. I'm a mechanical engineer by qualification and this was extremely interesting and insightful. Awesome technology! http://www.turbos.borgwarner.com/files/pdf/efr_turbo_technical_brief.pdf

Surely there must be surveillance at the airport carpark?

I ran Rota P1Rs 18x9 +38 with 225/40/18 (had to go that small to fit) on my version 8. Looked real good and fit just right with guard rolling. Had to spend a lot of time adjusting the ride height, cutting inner guards etc just to stop rubbing. 235s rubbed on the shop floor and got wrecked (thankfully they didn't charge me). Had Wedsport 17x7.5s on there prior with 215 tyres, and the car handled way better than with the fatter wheels and tyres. Was more agile and more predictable. Obviously less unsprung mass with the small wheels etc. I reckon think carefully about what you pick, especially if you want your car to handle well and not just be a show pony. It's crazy how a bad wheel and tyre choice can negatively affect handling, the feel of the car and even how responsive it feels due to increased unsprung weight. Also with your Rota choice atm you will definitely need a spacer on the front i believe

Gutted my car is not going, was so keen to come

Worth a call and ask man. He said he could get HKS and greddy intercoolers. Obviously the EFR turbos. Also gave me the best quote on kelford cams too.

Went with the EFR7670 man

These guys treated me real well. Plenty of good advice on parts and my build and really quick responses too. Gave me excellent pricing on mishimoto and Perrin products. Give em a shout if you're after branded quality parts

Nick Chiew from North Shore Toyota gave me a real good deal on my turbo and bolt on bits. Basically beat everyone else's prices and some! Also gave great advice and was very helpful. Didn't even know they did performance parts but they do! Definitely hit them up if you're thinking of buying through normal channels.

Yeah figured that would be the case @boon I think given I'm single scroll and 2.5L, the quicker spool is worth more than the extra 20hp, as can't rev to 8k anyways. Plus guessing he 7670 will be pricier. 330wkw will be plenty for sure! What do you reckon about the Watergate and BOV?

Hey guys. If I'm going to run a single scroll twisted setup on a 2.5L 2011 STI, with: - Power goals of 350kw - Full boost by 3500rpms - Holds power to redline - 98 pump gas tune Which of the two aformentioned turbos would you go for? I'm personally leaning towards the 7163 from what I've read, but have no experience. Also concerned about the capabilities of the internal Watergate. Apparently you need to get a turbosmart twin port IWG to make it handle higher boost pressures on the STI? Also unsure about the BOV capabilities. Other than that, they look like amazing turbos! Hoping they will retain some of that street rapid power onset, over the steady increase too

Ah nice! Was this the one that had been at Ajay's for a little while? Nice to see good power and looking immaculate!

Alright so getting a pretty decent Auckland crew!? Should cruise down as well

I am gonna do my best to get there! Any other Aucklanders heading down? @4G63B8 @BeastGRB

Before i delve into google is it more a GC8 thing than the newer subys? @pedro

Forgive my ignorance, but i don't understand how a car built and designed for aggressive road and rally can have major oil starvation issues? Surely when these were being built and tested on back roads / tracks etc they were pushed reasonably hard? Yeah for sure if you put a race driver with years of experience behind the wheel they will probably get the car at its limit and possibly bring up those issues with massive G forces. But for your amateur racer, is this something we really need to worry about? I'll be hitting the track too soon and my car is pretty well maintained. Just not sure what the definition of the limit is and if my driving will be totally fine on the track or not. I'd like to think i push my car pretty hard - if you're at point of almost sliding around the corner (RE003's) does that warrant adding in precautionary methods like overfilling etc? or am I ok? Sorry if this doesn't make a lot of sense!

Lol should have stated. Before tune is without cat back exhaust and uprated internal Wastegate. Also suspect the ECU pulled timing when the power run was done cos I had a faulty fuel pump in there at the time. @evowrx @pedro

Thought i may as well add to this Model: 2011 WRX STI Sedan Displacement: 2500cc Mods: Forged rebuild, Invidia TBE, DW65c, ID1000s, AEM CAI, AEM water/meth injection, Perrin FPR, Turbosmart IWG75 (17psi spring) and GFB Mach 2 Turbo/Boost: Stock / 22psi Fuel: Gull force 10 ECU: Stock Tuner/dyno: Possum Bourne / rolling road Power: 254kw and ~520nm Just need bigger turbo and front mount now.

Wow that is fascinating. Monstrous torque as well!

I'm getting 19 to 17 psi progressively from 5000 to 6500rpm in a 2.5L v11 GRB. Using an uprated turbosmart internal wastegate with 2 springs adding to 17psi, which probably helps! @Gripless

Area under the curve FTW. Quite literally