Swapping a KLZE engine into a 1996 Mazda MX6, which is an OBD2 chassis, is a popular upgrade for enthusiasts looking for more power. This guide addresses key questions and provides clarity for anyone undertaking this engine swap while retaining the OBD2 system. This article will walk you through the crucial components and considerations to ensure a successful Klze On Obd2 swap.
For an OBD2 MX6, the most straightforward and cost-effective method is to keep your existing OBD2 engine harness. This approach allows you to utilize the stock OBD2 ECU and the original MX6 MAF (Mass Air Flow sensor). This contrasts with OBD1 setups that often involve using a J-spec ECU and MX3 VAF (Volume Air Flow sensor). By sticking with the OBD2 components, you maintain compatibility and simplify the electrical aspects of the swap.
To properly manage the VRIS (Variable Resonance Induction System) solenoids on the KLZE intake manifold, aftermarket components are necessary. Specifically, MSD window switches are commonly used to activate the VRIS at the correct RPM ranges. The KLZE engine features two VRIS solenoids located on the intake manifold. For controlling these, an MSD Digital RPM Window Switch (like MSD #121-8969) can be employed, although it’s important to note that a single MSD window switch typically controls only one solenoid. Consider your VRIS control strategy and whether you need one or two switches based on your desired setup. Alongside VRIS control, an adjustable fuel pressure regulator (AFPR) is also recommended to fine-tune fuel delivery for optimal performance with the KLZE engine.
Regarding mechanical compatibility, a common concern is the intermediate shaft. However, when using a JDM KLZE engine and transmission as a set, the original MX6 intermediate shaft bolts directly to the KLZE motor. This direct fit eliminates the need for sourcing a 93-95 MX6 intermediate shaft or dealing with bracket differences, simplifying the installation process.
Intake manifold variations on the KLZE engine, such as the straight neck (Eunos) style, can raise questions about cold air intake fitment. While aftermarket cold air intakes like Hotshot are options, a cost-effective solution involves creating a short ram intake. Utilizing readily available PVC pipe and couplers, a custom intake can be fabricated. Minor adjustments, such as relocating the cruise control actuator, might be necessary to ensure adequate clearance for the intake system.
In conclusion, performing a KLZE swap on an OBD2 MX6 is achievable by retaining the OBD2 engine harness, ECU, and MAF. Managing VRIS solenoids with window switches and installing an adjustable fuel pressure regulator are key tuning aspects. The mechanical aspects, including the intermediate shaft and intake, are generally straightforward with the correct JDM KLZE engine and transmission package. This guide helps clarify the process and part selection for a successful KLZE on OBD2 engine swap.
