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BOFI’s own plug and play Intercooler for your boosted MX5 / Miata

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From: £375.31 inc VAT

Forge Twin Piston Blow Off Valve BOV – optional


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We believe this is THE intercooler solution for your boosted MX5 / Miata, with a 2” outlet to suit up to the EFR 6278 and all the way down to the GT2554R this system is plug and play and will handle all the boost you can throw at a Mazda B series engine.

We’ve looked at the modifications we’ve done ourselves over the years and have built a one-size-fits all system that incorporates provisions for IDLE, BOV, IAT and a MAP line for the Turbo Wastegate, which we’ve tested to give a far more linear throttle and removes most of the rubber banding present in some turbo builds.

The intercooler mounts support either a 180mm high intercooler or a 230mm, with excellent distance to the radiator as well as fitment against the factor air dam – it fully fills the mouth of the car, yet won’t ruin airflow to the radiator.

This entire unit is also compatible with our supercharger bundle, by changing out one hot side pipe for another set provided by us.

And finally, the entire pipe run is 2.5” internal diameter, with 6mm wall thickness silicone hose – we have ran these at over 21psi of boost without issue. All the angles of the mould have been checked to ensure consistent diameter throughout the bends.

The kit includes;

Mounting Hardware (M6 nuts & Bolts)

4mm Stainless mounting brackets (compatible with 180cm and 230cm)

10 x Stainless Clamps

5 Pieces of 6mm wall 2.5” ID boost piping

1 swaged aluminium up pipe with (25mm) takeoff for BOV, IAT (M12 x 1.5), IDLE (19mm) and Map provision and associated blanking caps.

2 swaged aluminium joiners (100mm)

*Product displayed for demonstration purposes, final product will be as per specification. Forge BOV sold separately, IAT sensor sold separately, Idle hose may be re-used from factory.

*If a coolant re-route is installed, the throttle body elbow can be cut up to 35mm for clearance.

*Intercooler pictured is 180mm in height.

*Up pipe is not customisable, blanks are provided for sections not used – you may re-purpose as needed.

Forge Twin Piston Blow Off Valve BOV

Weight 0.325 kg
Dimensions 10 × 8 × 8 cm



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Make Model Year
Mazda MX-5 1989 - 1997