Recent content by conundrum07

IMO the CT-26 is a great turbo. On my Supra it started spooling at ~1800 and had full boost before 2.5k. At 1 bar with intake and a cutout, I made right at 300rwhp. So, twins could make some serious power. Just look at the MKIV's. They make over 400rwhp at 18psi, and their turbos (CT12) are a...

Well, FWIW, the Supra's CT-26 is good till about 14psi. After that its just blowing hot air. Im not sure how the twin scroll and smaller housing affect your turbos. But, that should give you some ballpark numbers.

As far as I know, only the MR2, All Trac Celica, and MKIII Supra used the CT-26. The Supra CT-26 is a little bigger than the MR2 turbo. In fact, the MR2 guys use the stock Supra CT-26 for an upgrade. The easy way to tell them apart is the MR2 turbo is a twin scroll entry, the Supra turbo is a...

OK, that makes more sense. Thanks for the clarification.

Yea, lean is definately bad for a FI system (actually, the reason for my Supras death). Anyway, thanks for the info, I would have never suspected that you need so much more pressure. Im actually supprised that the stock fuel pump can keep up with that pressure increase.

Are you refering to the A/F Ratio (in which case IMO that is kinda lean at WOT for a boosted engine)? I was refering to the Rising Rate Fuel Pressure Regulator, ie. 1 more psi fuel pressure for each extra psi of boost pressure.

With the FMU and an otherwise stock fuel system, do you recommend a 1 to 1 rising rate, or higher for 5-6 pounds of boost?

Great writeup! Any updates?