Wanted to share my setup/dyno sheet here as I think its a great street setup. It spools great and makes IMO, perfect power for city/highway driving.

This was tuned last summer at EFI Logics by Calvin Dotson. Since then I've got about 6k miles on this setup.

It made 325WHP - 323WTQ with Pump 93 on their mustang dyno @20psi
- All home installed by me and tuned at EFI Logics

MODS:
- Built EJ257 (Cosworth pistons, King bearings, OEM STi Rods+ARP rod bolts, KillerB Pickup, 11mm Oil pump)
- Stock B25 heads and stock head Bolts/ HG

- Blouch 20G XTR 8CM Stock inlet size
- BNM External gate up pipe
- Precision 46mm EWG
- ID1050X, ID Fuel Rails and ID Lines(top feed conversion)
- TGV Deletes and EVAP deleted
- Spearco TMIC
- IAG Big Maf Intake
- APS Hard aluminum inlet
- GS 3port EBCS
- AEM 340 FP
- NGK 1 step colders
- TiAL Q BOV
- SRS Bellmouth Catless DP
- SRS Type 2 RE 3in catback
- S2 Industries AOS
- OEM 4th Cyl cooling mod
- 255/35/18 Achilles atr sport 2 (if that matters to anyone)

That looks like some pretty EPIC spool.

How does it feel to drive?

It brings a smile to my face every time. The ball bearing turbo was a good call. I hit full boost 20psi at around 3500 it takes off like a rocket and it holds it all the way to redline.

The 20g-xtr is a great match for that STI tranny. The gear ratios are perfect. And you have a perfect setup to go flex fuel as well, which will really push you back in the seat. Those are strong numbers on a Mustang dyno!

Wow that spools surprisingly quick. XTR's are great!

I wonder if he would need slightly larger injectors to go flex fuel on that beefy of a setup. Maybe not tho

@GK1707 What duty cycle are your injectors @ under full boost on pump gas?

That I haven't actually logged (I need to take a WOT log some time soon so I will post it when I do).

Based on Fuel Injector Clinic and Injector Dynamics fuel calculators this setup with these injectors on flex would be around 75-85% IDC (I'll need to take an actual log to be certain how much duty I'm running) but that seems a bit much for my liking.

So I've been certain 1300 or 1700s would be safer for flex. When it comes to that point I may just bump up in turbo size also and move to an ELH.

Yeah that 100% makes sense. I am switching from 1050s to 1300s when going flex fuel on a 2.1 stroker.

That has always been one of my favorites for a daily street driven setup. 20g xtr, id1k's and ewg. I was easy to make a safe but very quick car in the 400hp/400tq area. and pulled great.

Nice set up

Yeah having more headroom would be much better. Im sure I would have had no issues with IDC tuning flex fuel on these ID1050x (could have probably turned it up to 23-24PSI on E85) but I figured I'd save the flex tune for when I decide to go bigger turbo, injector and make some other upgrades.

Id for sure recommend this setup for anyone dailying their STi. Awesome usable power throughout the rpm band. On flex fuel, this setup is absolutely capable of 400/400... probably more on a dynojet.

Good numbers for sure.

I did that. When I bumped my injectors to 1300 for flex fuel, I also went to a Dom 1.5xtr. Just had ELH headers installed, as my UELs had cracked. Very pleased with the results overall.

Awesome build! I have the same turbo but stock engine(06 sti)I run e85 and make around the same power. My spool is also not as quick as yours but I haven***8217;t switched to EWG yet. Definitely still a fun turbo.