Closed Deck EJ257 V4 Ultra Short Block Forester Expansion connector 1 Ign 6

Expansion connector 1 Ign 6                Ignition 6 Auxiliary Output

Must retain stock rpm limit if OEM spring is used

5:1 for those with higher boost pressures and the desire to drop the compression ratio a little

Ideal in 36mm restrictor rally classes

+8V Sensor power supply

Closed Deck EJ257 V4 Ultra Short Block Forester Expansion connector 1 Ign 6This closed deck block design has been proven to withstand extreme boost levels resulting in high cylinder pressures without the worry of cracking a sleeve. The billet material that reinforces the combustion area has been further optimized with our V4 closed deck block in the known problem areas making it a far superior product to any sleeved block. With a closed deck block the stock sleeves are still in place eliminating all risk of dropping sleeves