NEW ADAPTER FITS 2.0T MAP SENSOR TO 3.8

Remnant Performance announced yesterday that it has finished initial design and modeling on an adapter plate that would allow 3.8 Turbo customers to physically fit the MAP sensor from the 2.0T onto the intake manifold of the 3.8.

Reading Boost with the Stock ECU

The adapter plate is an important piece of a larger effort to unlock native control of boost and air/fuel ratios (AFRs) in the Delphi MT86, the stock ECU in the Genesis Coupe 3.8. Most recently, AlphaSpeed announced that it had experimentally accomplished the long-awaited feat by using a Genesis Coupe 2.0T (BK2) sensor plugged into a BK2 3.8. While the connectors for 2.0T and 3.8 MAP sensors are physically compatible, new R&D to understand the convoluted engine control code of the MT86 was required to unlock communication with the replaced sensor.

New tunes that empower the stock ECU to read and control boost on 3.8 Turbo will remove key changes in driving; simplify the tuning process for AlphaSpeed; and make boost a little safer for everyone by having computerized control of air/fuel mixes—including emergency boost cut.

The Remnant Performance MAP Adapter

While AlphaSpeed works on the electronic side of running the 2.0T MAP sensor, Remnant Performance’s announcement helps with the physical side. The Genesis Coupe 3.8 uses a 3 PSI sensor mounted with a single bolt, while the 2.0T uses a 28 PSI sensor mounted with two bolts. Though the two sensors appear the same, the 2.0T sensor has minor differences: a larger bore hole into the intake manifold, and different spacing from the bolt hole.

The Remnant Performance adapter plate solves for this problem with a 3.8 bolt spacing and diameter on the manifold end, but 2.0T sensor diameter and spacing on the other.

R&D Continues

Customer availability of a complete solution could be ready as soon as the fall of 2021. Customers with existing 3.8T setups would need a new MAP sensor, a re-tune for ECU MAP/AFR control, and the adapter from Remnant Performance.