TGV deletes

S

STInate

Baxley’s Speed Shop
What the hell is a TGV delete and why should I do it? If so how?

Also is it ever safe to run a bov? It seems like everyone with a fmic is?

 
TGVs are probably more trouble than it's worth if you're not going to go all out as much horsepower as you can squeeze out of the engine considering the labor to do the deletes and the labor to remove the intake mani et al to get to them.

Here is stock:

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Here is totally deleted:

tgv1.jpg


Altenately you can also just take out the butterflies and leave the bars which is less effort.

 
you can make the power you want to with the tgv's in... if you were going for 450whp or more then maybe yes...

 
as far as the bov, it comes with one on it but it recirculates the air back into the turbo inlet. a vent to atmosphere bov is fine with tuning, i remember someone once teling me that i have to remember that the recirculated air is metered air and needs retuning if using a vent to atmos.

correct me if m wrong, i very well may be.

 
as far as the bov, it comes with one on it but it recirculates the air back into the turbo inlet. a vent to atmosphere bov is fine with tuning, i remember someone once teling me that i have to remember that the recirculated air is metered air and needs retuning if using a vent to atmos.

correct me if m wrong, i very well may be.
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yes and to tune this you need a blow thru maf therefore placing the bov prior to the maf so that the air isn't metered. you can run open bov all day long just not good for the car. people do it all the time... I have on all my cars.

 
You're letting metered air *out* when you use a bov. This means the car is pumping in more fuel than it needs, and the result is often the fire ball out the tail pipe when you lift to shift.

 
yup. they just help tumble (disturb) the air coming into the motor so the fuel mixes better and you get better emissions and probably a touch better low-rpm gas mileage. at high rpms they're not needed so the ecu tells them to go wide open, but they're still there, so they still restrict a little.

 
its not that atmospheric ones aren't ok, its just they're not optimal from a performance standpoint. 50/50's are the best bet if you want something loud but want it to not mess with the fueling too much.

 
its only gonna hurt ya when you get a bunch of fuel running down your cyl walls. I ran one. I prob wouldnt do it again... also cheap bovs like the hks one leak... get a good one. my sard r2d2 was great and mounted under the tmic

 
The issue you will always run into is the proper spring pressure to allow prevent leakage but blow off but soft enough to prevent surge. On my STI I had a blow thru so it was a non-issue, but I needed to run such a soft spring to prevent surge that it would ocsillate open at idle.

I have a 50/50 Turbosmart that came on my car when I bought it. This is a pretty expensive bov, and it seems to work pretty well for what it is.. even though I'm not a bov guy myself.

 
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Well im all about fire balls shooting out. That sounds pretty bad ass!!! Obviously the car would be running rich at that point though so not so good performance wise. The kit im buying dosnt include the bov like the one you got does pat but I did buy an adapter to make my stock one work for the time being.

 
Just helped put in some TGV deletes and a GT30 rotated mount tubro kit on a friend's car...

Taking out the stock manifold and hooking everything back up is a pain in the butt.. especially because everything runs though/ on the manifold... blah.

Its really quite amazing how much more flow you can get by doing thos modification.

Pat is right to a point, even slightly modded WRX's can take advantage of this with a tune, especially if you work to improve flow along the entire intake system, but its going to make a MUCH MUCH larger difference once you start running larger and larger numbers..

 
Just helped put in some TGV deletes and a GT30 rotated mount tubro kit on a friend's car...

Taking out the stock manifold and hooking everything back up is a pain in the butt.. especially because everything runs though/ on the manifold... blah.

Its really quite amazing how much more flow you can get by doing thos modification.

Pat is right to a point, even slightly modded WRX's can take advantage of this with a tune, especially if you work to improve flow along the entire intake system, but its going to make a MUCH MUCH larger difference once you start running larger and larger numbers..
Click to expand...
I wouldnt waiste my time with it. I did a lot of research when i was going to do it and found it wasnt that important for the hp range i said. It might give you a lil bit but is it worth all that work for 10-20hp that can be gained by either turning up the boost or just adding some meth?

 
Just helped put in some TGV deletes and a GT30 rotated mount tubro kit on a friend's car...

Taking out the stock manifold and hooking everything back up is a pain in the butt.. especially because everything runs though/ on the manifold... blah.

Its really quite amazing how much more flow you can get by doing thos modification.

Pat is right to a point, even slightly modded WRX's can take advantage of this with a tune, especially if you work to improve flow along the entire intake system, but its going to make a MUCH MUCH larger difference once you start running larger and larger numbers..
Click to expand...
I wouldnt waiste my time with it. I did a lot of research when i was going to do it and found it wasnt that important for the hp range i said. It might give you a lil bit but is it worth all that work for 10-20hp that can be gained by either turning up the boost or just adding some meth?
Click to expand...
I do agree with you, a good tune and/or water/meth injection will get you just as much or more gains for MUCH LESS work and effort.. but.. if you ever have to pull the intake manifold, do the mod while you are in there haha.

 
Just helped put in some TGV deletes and a GT30 rotated mount tubro kit on a friend's car...

Taking out the stock manifold and hooking everything back up is a pain in the butt.. especially because everything runs though/ on the manifold... blah.

Its really quite amazing how much more flow you can get by doing thos modification.

Pat is right to a point, even slightly modded WRX's can take advantage of this with a tune, especially if you work to improve flow along the entire intake system, but its going to make a MUCH MUCH larger difference once you start running larger and larger numbers..
Click to expand...
I wouldnt waiste my time with it. I did a lot of research when i was going to do it and found it wasnt that important for the hp range i said. It might give you a lil bit but is it worth all that work for 10-20hp that can be gained by either turning up the boost or just adding some meth?
Click to expand...
I do agree with you, a good tune and/or water/meth injection will get you just as much or more gains for MUCH LESS work and effort.. but.. if you ever have to pull the intake manifold, do the mod while you are in there haha.
Click to expand...
yeah he doenst have to and wouldnt know what to do... I dont think bill did it when he ran that turbo just to give you an idea. def limits gains over 400 tho

 
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