MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Mil.Spec 65mm ported throttle body:

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:

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 fully ported manifold: 3whp peak power gains, but +36wtq/+27whp @ 4000rpm and 25+ whp gains above 7,000 RPM!
-Version 3 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 which is also a very sexy piece with recessed hex bolts for a sleeker look (because I'm a ricer like that).

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Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

That manifold looks pretty sweet! and the results seems pretty good too.

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Here is the flowbench data for the stock and MAP v3 manifolds. The stock manifold is from a VIII RS. The v3 was that same stock manifold after modification/porting/machining.

Stock:
runner #1: 267.8 CFM, -9.22% imbalance
runner #2: 272.0 CFM, -7.80% imbalance
runner #3: 286.0 CFM, -3.05% imbalance
runner #4: 295.0 CFM, -0.00% imbalance

v3:
runner #1: 278.8 CFM, 4.11% flow increase, -7.04% imbalance, 31.05% balance increase
runner #2: 278.8 CFM, 2.50% flow increase, -7.04% imbalance, 10.82% balance increase
runner #3: 290.8 CFM, 1.68% flow increase, -3.03% imbalance, 00.54% balance increase
runner #4: 299.9 CFM, 1.66% flow increase, -0.00% imbalance, 00.00% balance increase

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Looking good! Glad to see your car back up and going strong! That black Intake manifold looks sweet!

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Pretty hawt! Can't wait to see the dyno graphs!

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Is that the Thermal Dispersent coating by chance?

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

It is, and a heat-reflective coating was used on the flange to reflect heat back to the head to keep the manifold as cool as possible. Along with the heat-barrier gasket and bypassed coolant lines the manifold/throttle body stays nice and cool to the touch.

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

does mil.spec do anything for dsm throttle bodies?

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

I don't believe they do as of right now but you should have MAP talk to them and figure out if they can set something up.

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

First post updated with more power gain data and links to website descriptions/pricing!

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

It would be interesting to see how that manifold compares to the Magnus as it is cheaper to buy the magnus from them than that one and the Magnus one claims a little more HP gain.

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

The Magnus has been proven on multiple occasions to lower power on the stock turbo.

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

This is one of the dynos that shows gains from the V3 portwork, with ceramic coating, and the 65mm tb. Slight shift of ~300rpms or so but significantly more power.

At the peaks, it's 380tq to 332 @ 3780rpm (gain of 48wtq) and at 3840rpm hp before was 241 and after was 276 (gain of 35whp). Good stuff all around.

Funny thing is, although Chris was nice enough to donate his car for testing (thanks again man) his setup was far from an ideal case to really showcase the gains from the work. If we were able to rev into the 8k-8500 range, and or have significantly more CFM to work with (bigger turbo) I have a feeling that not only would we have seen more, we would have seen much more up top. :drive: We do already have something else lined up that will highlight some of the gains on a big turbo setup. More info when it becomes available!

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Do you have boost logs from those two runs?

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

I agree. I really want to see this manifold on a bigger setup.

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

The new cast magnus?

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Could MAP do anything similar to this with a 1g manifold?

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

I'm sure they could; talk to Bob and/or Chris @ MAP!

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

Yes we could do this with 1G manifolds as well.

And we will have another big turbo V3 test in a few weeks as well....be on the lookout! ;)

Re: MAP Intake Manifold and Mil.Spec Throttle Body tested!
 

very impressive! how much does that set you back? the manifol i wanna get one for my 2g