GFB Respons TMS Adjustable BOV - 2015+ STI
Respons TMS Direct fit Blow off valve or BOV with GFB TMS advantage. Patented adjustable venting bias system diverter valve.
Atmosphere venting BOV won’t work on your car? Try a GFB Respons – you’ll be surprised! Just another dual-port BOV? On the surface it may look like just another dual-port blow-off valve,but the Respons is actually much more than that. Featuring GFB’s patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets. Why is this so important? Two key reasons: Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference. Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF). Hold on, it gets better. The Respons isn’t just a noise-maker. It also: Offers better throttle response Faster boost recovery on gearshift Unlimited boost-holding! More about Respons TMS Respons TMS can increase your boost by 30% during throttle modulation This unique system allows the amount of air vented to either recirc or atmosphere to be infinitely varied to change the venting sound like a stereo volume dial! So if you want noise with your performance, the Respons can deliver! By fine-tuning the venting ratio, you CAN achieve a blow-off sound WITHOUT throwing a CEL (check engine light), running rich, stalling, using more fuel or causing any other problems commonly associated with atmo-venting valves on cars with MAF sensors. (*Chart shows comparative manifold boost pressure rise during 1st to 2nd gear shift as tested on a CA18DET with a T28 turbo. GFB TMS improvement is seen as a 30% faster return to peak boost, during which time up to 40% more boost is available) How GFB’s patented venting bias adjustment works Twisting the adjusting ring opens up the atmo port, whilst the recirc port is simultaneously closed.This results in possible venting ratios ranging from 100% recirc, right through to 100% atmosphere and anywhere in between. This Part Fits2015-2017 Subaru STI GFB Respons TMS Adjustable BOV
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