GrimmSpeed
02-08-2008, 12:07 PM
Just wanted to let you guys know some of the differences between makes and years of tgv's
07STi vs 02-06 wrx
First subaru switched to a top feed injector, instead of the side feed you see on 04-06 Sti’s. The second thing they changed was the mounting holes in the middle of the TGV. If you have looked at an OEM upper tgv gasket you will notice the middle two mounting holes are notched. This is subarus standard gasket for the upper tgv’s. This will need to be purchased when replacing your tgv’s. The third and final drastic change, the made the butterfly’s smaller.
Now for you 07 STi guys that would like tgv deletes; we can accommodate, we will be using wrx tgv housings, until we get 07 sti cores in stock. The only modification needed to make these work besides changing out the gaskets (which you have to do anyway) is bore out the two mounting holes in the middle of the intake manifold. We normally use a 3/8” drill bit and it seems to work fine for lining up the holes.
LGT vs 04-06 STi
For you LGT guys that would like tgv deletes; we can accommodate, we will be using 04-06 STi tgv housings, until we get LGT cores in stock. The only modification needed to make these work besides changing out the gaskets (which you have to do anyway), is bore out the two mounting holes in the middle of the intake manifold. We normally use a 3/8” drill bit and it seems to work fine for lining up the holes.
07 STi Intake manifold, Two circled mounting holes are the holes to bore out.
http://www.grimmspeed.com/images/intakemani_mod_600.jpg
'07 STi TGV where the two holes the intake manifold lines up with.
http://www.grimmspeed.com/images/tgvmod_600.jpg
Top Gasket is current subaru replacement, Bottom is 02-06 wrx/sti
http://www.grimmspeed.com/images/gasket_comp_600.JPG
Hope this helps any confusion out there about the differences.
Josh
07STi vs 02-06 wrx
First subaru switched to a top feed injector, instead of the side feed you see on 04-06 Sti’s. The second thing they changed was the mounting holes in the middle of the TGV. If you have looked at an OEM upper tgv gasket you will notice the middle two mounting holes are notched. This is subarus standard gasket for the upper tgv’s. This will need to be purchased when replacing your tgv’s. The third and final drastic change, the made the butterfly’s smaller.
Now for you 07 STi guys that would like tgv deletes; we can accommodate, we will be using wrx tgv housings, until we get 07 sti cores in stock. The only modification needed to make these work besides changing out the gaskets (which you have to do anyway) is bore out the two mounting holes in the middle of the intake manifold. We normally use a 3/8” drill bit and it seems to work fine for lining up the holes.
LGT vs 04-06 STi
For you LGT guys that would like tgv deletes; we can accommodate, we will be using 04-06 STi tgv housings, until we get LGT cores in stock. The only modification needed to make these work besides changing out the gaskets (which you have to do anyway), is bore out the two mounting holes in the middle of the intake manifold. We normally use a 3/8” drill bit and it seems to work fine for lining up the holes.
07 STi Intake manifold, Two circled mounting holes are the holes to bore out.
http://www.grimmspeed.com/images/intakemani_mod_600.jpg
'07 STi TGV where the two holes the intake manifold lines up with.
http://www.grimmspeed.com/images/tgvmod_600.jpg
Top Gasket is current subaru replacement, Bottom is 02-06 wrx/sti
http://www.grimmspeed.com/images/gasket_comp_600.JPG
Hope this helps any confusion out there about the differences.
Josh