powdrhound

We have an excellent welder that takes care of stuff like this for us. Same guy that did my cage. It's good to have someone local that you can trust with welding critical stuff. All of this stuff is not particularly difficult but just like anything takes time to do it right. The nice thing about doing it right is that you won't ever have to address this again in the future. Clearly the time to do all this is when your engine is out.

Asmig

What is the formula for that much wheel hp through K16's? Really impressive number.

T10Chris

I'm not sure how much of the following made any difference or not, but I'll list it all out.

Filters on turbos (in hindsight, dont do this), 997.1 DO88 big pack intercoolers with all hoses and 997 Y-pipe, 997 GT3 82mm TB, 997.1TT do88 plenum, 997TT intake manifolds, Kline large diameter headers, 1 bar wastegates, 3" catless X pipe with no mufflers (EBWerks), standalone ecu that allowed me to use custom variocam tuning, E85 fuel (and full fuel system to accomodate- -8 feed/return lines, adjustable FPR set to 5 bar, ID1300s, etc), 1.3 bar boost (at peak, couldn't really hold this the whole way up).

The variocam tuning and the E85 were probably the secrets to it if I had to guess, everything else might have been a few hp here or there. Could run crazy timing on the E85, the car loved it. The extra timing gave about 40 peak hp over the pump gas setting on the same boost and at some parts of the powerband it was over 100 whp more. I stripped all the aero off the car to reduce drag and went 6.48s 60-130 so it was pretty strong and ran it on track a few times on this tune so it wasn't a dyno queen setup, but the IATs were insane by the end of a session since the little K16 compressor was pushed way way way off the efficiency island. I'm sure emap ratio was very unsafe too and I probably would've melted something if ran that hard without the cooling benefits of the ethanol.

2fcknfst

Neither does being argumentative, or, an antagonist.

vtec_

You can put on a set of xr1000s and keep most of the other stuff relatively stock and probably get better numbers than you could with k24s or atleast match it for around the same price..unless you can get a set of k24s for cheap.

These turbos look like they could easily hit 550 whp with the stock fuel system and do it alot more safe than with any sort of k16 variant.

kamlung

good luck with that.

s65e90

It was like one of the first ECUtek evo IX. Cars were brand new.

s65e90

e85 I'm sure

docwyte

I'm not determined at all. There are multiple pathways and people can choose what they want to do and how they want to spend their money.

My takeaway from all of the last few pages of posts is that it's a lot of custom work, time and money to get these turbos to work in this fashion.

That makes me happy I (Me, my decision, not for everyone) decided to go with the simple bolt on route.

kflee

100% with you!

Kirk

kamlung

i wish i had your discipline... nothing is ever good enough for me so i have a lot of FOMO

Bernard IV

Definitely once you start changing up your fuel system you have taken the plunge. It's been fun though. I like changing stuff and figuring it out as you go. I'm probably going to wind up with these turbos pretty soon as I already have a built motor so why not.

T10Chris

You can also just bolt these turbos on and go with a stock ecu tune just like any other K16/K24 variant and they'll perform better than any stock based turbo. Things only start to get complicated when you want to push the capabilities, depending on how far you want to push it and how safely you want to do it.

G8rJimbo

From some other posts I've exchanged with Doc, he does things the way he does because he likes simple and he likes OEM, which is fine. I have friends that do the same. Atleast he acknowledges that there's nothing wrong with what we're doing, he just doesn't seek the end goal of speed like we do.

Chris, I have a K16 Hybrid setup and am only getting around 520whp judging by my Draggy numbers. The stuff you are pushing to get that 560 number is more than I want on my street car, plus, E85 is not available in my area So....24's or Xona's will be in my future, ROFL. Neat to see you doing all of that, but I think the intake stuff was probably more of a waste.

What's your reasoning for saying you wouldn't do the filter on turbo setup? I know a popular tuner/vendor swears by them.

docwyte

So turbos, water lines, bigger fuel injectors and a tune? That's a nice intermediate step and I'm sure a much better platform.

I had two impediments to modding, I need to stay smog compliant and have the possibility of flashing the stock tune back and have the car run reasonably well enough to pass.

For me, that meant sticking with stock fuel injectors, which meant anything larger than k24's didn't make sense. When I found a pair of k24 turbos for a reasonable amount, that sealed the deal for me.

I also didn't want to immediately have to upgrade the clutch. For me that's a slippery slope since my car hasn't had the coolant lines addressed yet. So engine out, coolant lines, all the plastic/rubber bits, clutch and flywheel etc. Way more money, in other words.

I don't really have expectations of my clutch lasting forever with my current setup, but it held up last year surprisingly well, with no slipping. So who knows?