Kracka
02-12-2009, 09:45 PM
Mil.Spec 65mm ported throttle body (http://www.maperformance.com/product.php?productid=20667&cat=0&page=2):
After running into issue after issue with a billet 68mm newcomer to the Evo throttle body market, I contacted Aby and Erik at Mil.Spec (late Saturday night), heard back from them on Sunday, ordered it through Modern Automotive Performance, and had the throttle body on Wednesday. I've been incredibly impressed with their professionalism, quality of workmanship, and promptness of shipping. When it arrived it was in perfect condition and came with a machined OEM Mitsu gasket. It was a very simple bolt-in affair, especially since the TPS was already calibrated to spec. The car started up, ran, and idled perfectly. We strapped the car down on the dyno and I picked up 3whp and 15 ft lbs of tq over the stock throttle body on the MAP v3 manifold discussed below. These numbers don't tell the whole story though since they are peak numbers and the ported throttle body does flow more in the upper RPM's. Overall, I'm very impressed considering this was a last ditch effort to squeeze a little more power from my maxed out stock turbo/stock ECU/pump gas setup. I also took the opportunity to bypass the throttle body coolant lines to help keep the intake air cooler.
MAP ported/modified intake manifolds (http://www.maperformance.com/evo-viii-ix-intercoolers-and-intake-intake-manifolds/):
MAP is now making 3 different versions of the stock intake manifold; all can be machined for a stock or larger aftermarket throttle body. The v1, v2, and the v3. The v1 is your basic ported/gasket matched intake manifold. The v2 goes one step further and they're able to port the entire length of the runner and do some minor port work inside the plenum. Things start to get pretty wild with the v3 when they cut the plenum open, work their magic on it, then weld it back together. I'll let them post the specifics in a few days when they announce the manifolds publicly, but I will say that flowbench testing confirms higher flow and better runner balance. I ended up with the v3 on my car since it showed the best gains (obviously), and I had them use heat-reflective coating on the head flange and a semi-gloss black heat dispersant coating on the manifolds exterior. I also used a heat-barrier spacer gasket. With all these options the manifold stays cool to the touch no matter how hard its driven or how many dyno pulls are done back-to-back. On to the results!
Please keep in mind my stock turbo/stock ECU/pump gas setup is maxed out so any gains were very welcome.
-Version 1 basic ported manifold: 2whp peak gains and a power curve identical to stock.
-Version 2 (http://www.maperformance.com/product.php?productid=20668&cat=581&page=1) fully ported manifold: 3whp peak power gains, but +36wtq/+27whp @ 4000rpm and 25+ whp gains above 7,000 RPM!
-Version 3 (http://www.maperformance.com/product.php?productid=20669) max modified manifold: 3whp peak power gains, but +47wtq/+35whp @ 3800rpm and 25+ whp gains above 7,000 RPM with an additional gain of 10 ft lbs of torque in the peak powerband!
All said and done I'm very happy I had the opportunity to work with MAP and test these products. I also took the opportunity to remove a lot of the emissions systems including a STM EGR block-off plate (http://www.streettunedmotorsports.com/parts/stm_egr_block_off_plate_dsm_evo.htm) which is also a very sexy piece with recessed hex bolts for a sleeker look (because I'm a ricer like that).
http://www.dsmstyle.com/photopost/data/583/IMGP1285.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1286.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1282.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1284.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1279.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1281.JPG
After running into issue after issue with a billet 68mm newcomer to the Evo throttle body market, I contacted Aby and Erik at Mil.Spec (late Saturday night), heard back from them on Sunday, ordered it through Modern Automotive Performance, and had the throttle body on Wednesday. I've been incredibly impressed with their professionalism, quality of workmanship, and promptness of shipping. When it arrived it was in perfect condition and came with a machined OEM Mitsu gasket. It was a very simple bolt-in affair, especially since the TPS was already calibrated to spec. The car started up, ran, and idled perfectly. We strapped the car down on the dyno and I picked up 3whp and 15 ft lbs of tq over the stock throttle body on the MAP v3 manifold discussed below. These numbers don't tell the whole story though since they are peak numbers and the ported throttle body does flow more in the upper RPM's. Overall, I'm very impressed considering this was a last ditch effort to squeeze a little more power from my maxed out stock turbo/stock ECU/pump gas setup. I also took the opportunity to bypass the throttle body coolant lines to help keep the intake air cooler.
MAP ported/modified intake manifolds (http://www.maperformance.com/evo-viii-ix-intercoolers-and-intake-intake-manifolds/):
MAP is now making 3 different versions of the stock intake manifold; all can be machined for a stock or larger aftermarket throttle body. The v1, v2, and the v3. The v1 is your basic ported/gasket matched intake manifold. The v2 goes one step further and they're able to port the entire length of the runner and do some minor port work inside the plenum. Things start to get pretty wild with the v3 when they cut the plenum open, work their magic on it, then weld it back together. I'll let them post the specifics in a few days when they announce the manifolds publicly, but I will say that flowbench testing confirms higher flow and better runner balance. I ended up with the v3 on my car since it showed the best gains (obviously), and I had them use heat-reflective coating on the head flange and a semi-gloss black heat dispersant coating on the manifolds exterior. I also used a heat-barrier spacer gasket. With all these options the manifold stays cool to the touch no matter how hard its driven or how many dyno pulls are done back-to-back. On to the results!
Please keep in mind my stock turbo/stock ECU/pump gas setup is maxed out so any gains were very welcome.
-Version 1 basic ported manifold: 2whp peak gains and a power curve identical to stock.
-Version 2 (http://www.maperformance.com/product.php?productid=20668&cat=581&page=1) fully ported manifold: 3whp peak power gains, but +36wtq/+27whp @ 4000rpm and 25+ whp gains above 7,000 RPM!
-Version 3 (http://www.maperformance.com/product.php?productid=20669) max modified manifold: 3whp peak power gains, but +47wtq/+35whp @ 3800rpm and 25+ whp gains above 7,000 RPM with an additional gain of 10 ft lbs of torque in the peak powerband!
All said and done I'm very happy I had the opportunity to work with MAP and test these products. I also took the opportunity to remove a lot of the emissions systems including a STM EGR block-off plate (http://www.streettunedmotorsports.com/parts/stm_egr_block_off_plate_dsm_evo.htm) which is also a very sexy piece with recessed hex bolts for a sleeker look (because I'm a ricer like that).
http://www.dsmstyle.com/photopost/data/583/IMGP1285.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1286.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1282.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1284.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1279.JPG
http://www.dsmstyle.com/photopost/data/583/IMGP1281.JPG