About this range

Now You Can Control The Sound Of The BOV From Inside The Cabin!

So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the ‘Respons’ concept even further...

  • Adjust your BOV venting bias electronically on-the-fly
  • Revised porting to optimise flow and venting bias
  • Compact design fits in most factory valve locations
  • Direct bolt on for many vehicles
  • New bore finishing process ensures a lifetime of reliable operation

Deceptor Pro II features

Direct bolt-on for most vehicles available:

  • Remote proportional venting bias/volume control- from silent to loud or anywhere in between
  • Sleek, compact in-car BOV volume controller with backlit dial
  • End point adjustment to control maximum vent to atmosphere bias setting
  • Volume adjustment mechanism driven by a high-torque geared electric motor
  • Durable, low-friction ger train supported by precision sealed ball-bearing
  • Supplied with all parts and wiring required to have it up and running quickly and easily


Vehicle Applications
Deceptor Pro II TMS Universal (33mm inlet- 33mm outlet)motorised Blow off valve or BOV with GFB TMS advantage. In cabin patented adjustable venting bias system diverter valve. also suits:

MITSUBISHI Lancer GSR 1.8 4G93 92-96
MITSUBISHI Lancer EVO I-III 92-96
MITSUBISHI 3000GT VR-4 6G72 92-99
MITSUBISHI Galant VR4 E84A 6A12TT 92-96
MITSUBISHI Lancer EVO VI-VIII 99-05
MITSUBISHI Lancer EVO IX 05-07
MITSUBISHI Colt Ralliart All 4G15 06-On
MITSUBISHI Lancer EVO X 07-On
MITSUBISHI Lancer Ralliart 4B11T 08-On
MITSUBISHI GTO Twin Turbo 6G72 89-00
SUBARU Liberty/Legacy GT MY10-14 (BM, BR)
MITSUBISHI Eclipse 2G 4G63t 1995-1999

SKU GFB-T9533
Brand GFB