- VG30DETT 87mm New Pistons with Rings.
- S15 Brand New 86mm Piston with Rings
- Apexi GT Piston 86.5mm New Piston with rings
- Used RNN14-GTiR 86mm pistons with Rings.
when dis happens my rev feels like a pull back, drop of performance for 1 sec,,,, on dyno machine at each run, it always happens at dat region, thus im not able to pull above dat region, as da a/f ratio fluctuates up...