This could probably be its own build thread, but anyway…
Story: After a complete rebuild of a new SR20DET setup bottom to top, finally I have gotten it to be tuned right and stable. After 1,200 break in miles on various Enthalpy tunes, I bought new Apexi Power FC D-Jetro system with new MAP, AIT sensors and new harness, and took it to Portland Speed Industries for a custom map. They do the tuning for the vast majority of pro-am and pro drivers in the NW drifting circuit. Aside from some small technical details of getting it ready to tune, the baseline map came out pretty quick. The battery went dead from leaving it sitting with the fans running, and somehow the alternator got fried from jump starting it with the polarity of the cables reversed, so the dyno was run with the electrical system at 12.0 volts. When it finally got tuned enough to full boost runs, it was heat soaked and pushed near identical hp at 18 psi and 20 psi.
Final result: 341 rwhp and 280 tq. As seen in the dyno video below, it spins up very fast. The tuner indicated that if we let it cool down and run it again he would get another 20hp if not more, but I indicated I was looking for a reliable, responsive, powerful and safe configuration for daily driving. Timing under boost is at 16 degrees. I wasn’t looking to push out some ridiculously high number if it compromises the durability of the car. As it turns out, the map had 40 degrees of timing throughout the low to mid rpm off throttle positions and the car detonated a lot in daily driving. Even with octane booster (waste of money), I had to drop ignition timing to the 29-30 degree range in order to avoid detonation.
Impressions: I love the Power FC. I have experience remapping fuel injection systems and recognize its short comings, but for what it is I am very happy about its usability and effectiveness. The car pulls very hard beyond 5K rpm, but I was hoping for more response between 4k and 5k (full boost doesn’t hit until 5k). The billet throttle body and custom fabricated intercooler piping is absolutely gorgeous but I have no idea how much hp it is worth. I intend on sticking with this setup for a while and enjoying it before doing anything else under the hood (there isn’t really anything left to do except swapping to a top mount 3071 or LSx).
Eye candy:
Dyno video:
SR20DET GT2871R External Wastegate dyno - YouTube
Wiseco 9:1 pistons, 86.5mm
Eagle rods
Wiseco pistons 9:1 compression
ACL race bearings
ARP head studs
Ported head
BC264 12.0mm lift cams
JWT cam gears
Greddy valve springs
Greddy/Trust rocker arm stoppers
BC titanium valve spring retainers
Apexi 1.1mm metal head gasket
New OEM timing set
New OEM oil pump
Garrett GT2871R .73AR T25-EWG-44 housing
Tial 44mm v-band external wastegate, 1.1 Bar, with custom dump tube to atmosphere (loud)
Greddy tubular exhaust manifold with 4 layers of ceramic coating
All turbo hardware is stainless studs with copper lock nuts and nord lock washers
Apexi Power FC D-Jetro standalone with MAP sensor and integrated Greddy boost controller selenoid
7 layer exhaust gasket
Circuit Sports braided turbo oil & coolant lines
Splitfire coil packs
Greddy/trust turbo elbow
Greddy down pipe
Invidia 3” full exhaust with Magnaflow 3” spun metallic catalytic converter extra 3” Magnaflow race muffler and single 3 inch in, dual 2.5 inch out Magnaflow muffler
Custom fabricated stainless steel 2.5” intercooler piping with HPS silicone couplers and T-bolt clamps
Era-1 billet throttle body
Port-matched stock SR20DET S13 intake manifold
HKS top feed fuel rail with all Aeroquip push lock -AN lines & fittings
Injector Dynamics 1000cc top feed high impedance fuel injectors
Aeromotive Fuel Pressure Regulator and -8 AN push lock lines
Aeromotive -10 micron billet fuel filter
Aeromotive 340lph Stealth fuel pump with relay
Tial Q 50mm blow off valve
Circuit Sports oil block adapter
10AN Aeroquip oil lines to Offenhauser remote PH43A oil filter mount
Permacool 160 degree oil thermostat
CX Racing 13 row oil cooler
Greddy oil pan (6.5 quarts total engine oil capacity)
Stance water pump pulley
Stance water neck spacer
Billet power steering reservoir
Flex-A-Lite power steering oil cooler
OEM Nissan water pump
Samco silicone hoses
OEM Nissan thermostat
Koyo race radiator
Blitz radiator cap
Circuit Sports coolant reservoir
Dual electric Altima fans (DIF controller yet to be installed)
A/C removed
Blue powdercoated valve cover
Tomei oil filler cap
Rebuilt alternator
RPS Max stage 3 clutch
Nissan OEM clutch slave cylinder with braided stainless line
B&M quick shifter
Nismo rubber shift knob
1 piece aluminum lightened driveshaft
Nismo motor mounts