T04Z on FSR Manifold

[mattdavies]

Engine Type - 2JZ- GTE

 

Engine Spec - Whifbitz 264 Cams, FSR Manifold, 3" downpipe, 44mm Tial Wastegate, 650cc Side Feeds ( 2025- 1000cc FIC injectors )

 

Turbo - HKS T04Z with Open 0.82a/r Turbine

 

Fuel Used - Tesco 99 

 

Exhaust - 3.5" Twin Box Whifbitz 

 

Transmission - A340 Auto

 

ECU - 2024 - HKS F-Con 3.3 / 2025 - Syvecs S7+

 

Mapped By - 2024 - Dennis @ TDi, Thurrock / 2025 - Mike @ SRD

 

Dyno Used - Rototest 

 

Power figure - 2024 - 450rwhp / 2025 - 558RWHP 

 

Torque figure - 2024 - 380 ft/lb / 2025 - 455ft/lb

 

Boost Pressure - 1 bar / 1.6bar

 

2024  - Squished midpipe 

2025 - New 3.5" Midpipe 

Edited April 14 by mattdavies
2025 Update (see edit history)

[mattdavies]

Recently took the car in for more tuning to add more boost and the tuner said that after 1bar it doesnt make any more power at the top end due to detonation. It currently makes 1.2bar but has had to pull timing to keep it happy. He tried 1.55bar but had to target 10.8 AFR to keep it happy and it wasnt going to make much more power. He theory is that EMAP is too high and csusing these issues. The tuner blamed the manifold. 

 

 

[mattdavies]

Swapped out the Midpipe which had been crushed from hitting speed bumps etc. this primativelty measure tothe equivilent of a 2.5" diameter. I had a new new 3.5" midpipe made up by an exhaust shop. I put the car on SRR dyno on one of their Saturday Dyno Days, and Charlie advised it was running a little lean for his liking 12.8:1 AFR. I then took advatage of a few deals, a Syvec S7+ from Whiftbitz and 1000cc Injectors and Rail off a memeber, SRD made me up a pre-terminated sensor loom and sensor package, I got all this fitted. 

Long Story short - SRD Mapped it on all the new bits and it now makes 558WHP @ 1.6bar and 455ft/lb.