This is a discussion on How much boost will the 11's - 13's turbo efficiently produce? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Originally Posted by rickyd13 sorry i quoted the wrong post i was talking about the grimmspeed Tumble Generator Valve (TGV) ...
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Lightened pulley works the same as a lightned flywheel. For every 1lb you remove from the crank it is like removing 10lbs from the weight of the vehicle. Off boost throttle response is pretty noticeable especially once the car is in motion. Faster rev's=faster powerband. I like them and they are easy to pick up used for $50-$60. Removing weight from a vehicle doesn't increase HP but is the car faster? Absolutely..........
I ran 23.5psi on 93 octane with my vf22. I could have turned it up a little more, but at 23.5psi the IWG was being forced open. Of course that was with a lot of other mods..
i saw that it said the gains but i meant are they noticeable?
thanks i also just posted a thread with a few questions if anyone can help sorry OP not trying to thread jack just curious
Otherwise, I haven't personally done the modification myself. I wouldn't expect a night and day difference to say the least.
I'm lost on how a set of headers is "too much trouble"...Originally Posted by Methodical4u
I'll just leave this here:
NASIOC - View Single Post - TopSpeed Motorsports - **2011 STI** Invidia Race Header Tested!!
Yeah, it's not going to be a huge difference, but I still feel it's worth it. Since you have to remove the manifold, and obviously you're going to have to have the car professionally tuned to take advantage of the improved VE it's not something that is normally done just by itself.
When I had my TGVs removed and ported I also port and polished my throttle body and intake manifold, as well as installing phenolic spacers and +1mm valves with a radiused valve job. The most noticeable difference was off boost drivability. Fuel economy went up probably 3-4mpg and the car was much easier to drive around town.