[Goertz]

Powerfab Autosports Houston finally got a chance to test our intake manifold out on one of their C7 Vette.

Stock, MSD, G1Pro Intake

Now before I go posting up
Stock intake manifold has a 8.5" long primary, MSD is roughly 7" primary, mine are 4.5" Primary.

The length of the primary shifts trq to either higher or lower rpm, shorter primary = higher rpm manifold (the other sheet metal intake out there has a much shorter primary meaning it would be shifted even higher that ours meaning even less mid/low end).

I designed my intake manifold for big boost engines, big cubic inch engines, big cam engines, big rpm engines (basically anything needing big flow), not necessarily a bone stock engine, smaller blower and low boost engine. So with that being said when it straps down on something willing to rev to 7500rpm (where I have mine built to shine) or bigger engine or bigger boost I guarantee the gains will be even more substantial.


With all that said here are the charts.

notice 4000-5400rpm we lose 10wtrq over stock intake manifold then we gain it all back and would continue to gain if the person was willing to rev the engine a little higher. This was stock cam 7 psi (3.6" pulley) procharger setup. The reasoning for why my intake is showing 9lbs of boost is the map sensor is shrouded on the stock and msd type intake manifolds. With all the runners in the plenum and air pickup closer to the middle of the plenum rather than the plenum side walls it creates a low pressure zone on the plenum side walls.

The test was done keeping af's all the same to a degree without tuning and timing the same. Note in the mid range where mine lost power it also ran quite a bit leaner here so had they bumped it back into range it should have picked up some of that lost power. Also note this the where the msd ran richer and the trq chart relates this with it being higher here...

As far as questions about heat soak there was none, the plenum is roughly 2" over the valley which allows nice airflow to keep it from heat soaking, yes the bottom 2" of the runners and the flange are warmer than your plastic manifolds will be however the air is moving near the speed of sound and the amount of heat transfer back into the air there is negligible. If it is really a huge concern we can have a phenolic heat spacer made however you'll likely see zero gains.


We are looking to strap it onto a much more willing motor very soon revving 7500-8000rpm (all motor car running mid 10's 131mph) then again later on a bigger cube engine and bigger boost engine.

Other things to take into account is the plastic manifolds aren't going to be so happy with big boost setups. The msd we had access on a Procharger vette at Boostworks was leaking boost anything over 17psi.... I don't know about you guys but I don't like having limits on my power.

[Goertz]

Intake will next be going to all motor car setup as so:

Cam heads converter exhaust msd e85
10.45 at 131

[Goertz]

Tomorrow I will have a proper msd/g1 overlay chart in mean time here was cell cam pic (pink is g1, yellow is msd) showing 10loss mid range and 10 gain right at the red line, unfortunately as these cars approach rev limiter the cars start pulling timing so it makes numbers on the big end all wonky, just wait to get it on a bigger rpm car that already is running a 10.45 @ 131mph all motor and we see the big rpm gains

[Megahurtz]

I'd be interested in seeing your intake vs a PRAY ported MSD intake. Dyno and Track times. Not being a naysayer here, but at what point is a metal intake a flow advantage over a ported MSD? I suppose I would never put a metal intake manifold on a street car.

[Goertz]

The advantage isn't in the stock rpms, it going to when you rev it a bit higher or actually need the bigger air flow ( big cam, big boost, big rpm, big inch)

I don't want my intake on cars that still debate over which cold air intake or exhaust to use... Nothing more than domestic rice when we argue the semantics of a 2 hp gain between this and that filter setup...

I'll be dropping off my tester intake at LMR next week monday to be played with and tested on some real hp wagons.

[Goertz]

All comparisons as promised

[Goertz]

Top dyno mine vs stock

Second dyno msd vs mine

Bottom dyno msd vs stock.



For a mild or low boost setup that'll never go bigger rpm, bigger boost, bigger cam etc, go msd it is much better for y'at 4000-5500rpm zone.

Want something roudy? 15++ psi boost? You know where to find me.

And for those wandering, a shorter runner than mine like on the billet mani or other sheet metal out there is just gonna push that mid range down even more. If your gonna rev to 9000+ yeah go for it or lmk and I'll build you one myself. But for a realistic 900-1500whp car mine should be about perfect. Need more power lmk and i can build whatever

[Megahurtz]

Originally Posted by Goertz

The advantage isn't in the stock rpms, it going to when you rev it a bit higher or actually need the bigger air flow ( big cam, big boost, big rpm, big inch)

I don't want my intake on cars that still debate over which cold air intake or exhaust to use... Nothing more than domestic rice when we argue the semantics of a 2 hp gain between this and that filter setup...

I'll be dropping off my tester intake at LMR next week monday to be played with and tested on some real hp wagons.

Hence why I said street car. Your manifold seems like it could shine for serious power cars. So my question was your manifold vs a PORTED MSD on say a 1000HP+ car. That is the compare I would like to see. If the ported MSD would deliver the same or very close top end numbers as your manifold but surpass your midrange numbers then it would make it a lot harder to justify going to a metal intake manifold that can suffer from heat soak as well as lower mid range power. I think a ported MSD would most likely outshine your manifold at the power levels you posted on these dyno graphs.

Just making for discussion here...

[hamilton2008]

Originally Posted by Megahurtz

Hence why I said street car. Your manifold seems like it could shine for serious power cars. So my question was your manifold vs a PORTED MSD on say a 1000HP+ car. That is the compare I would like to see. If the ported MSD would deliver the same or very close top end numbers as your manifold but surpass your midrange numbers then it would make it a lot harder to justify going to a metal intake manifold that can suffer from heat soak as well as lower mid range power. I think a ported MSD would most likely outshine your manifold at the power levels you posted on these dyno graphs.

Just making for discussion here...

IM GUNA TEST THIS THING ON MY MAX EFFORT NA MOTOR THAT TURNS 7400 RPMS IN THE NEAR FUTURE..... SO ILL HAVE A REAL WORL PORTED MSD VS THE FABRICATED INTAKE.... AND I MEASURE AT THE TIRE

[Goertz]

Originally Posted by Megahurtz

Hence why I said street car. Your manifold seems like it could shine for serious power cars. So my question was your manifold vs a PORTED MSD on say a 1000HP+ car. That is the compare I would like to see. If the ported MSD would deliver the same or very close top end numbers as your manifold but surpass your midrange numbers then it would make it a lot harder to justify going to a metal intake manifold that can suffer from heat soak as well as lower mid range power. I think a ported MSD would most likely outshine your manifold at the power levels you posted on these dyno graphs.

Just making for discussion here...

All that is good and all till the msd plastic can't hold together anymore.

A boosted Procharged c7 was using the msd and at 17lbs of boost it was ripping the bolts out and leaking boost, you don't make crap power when that happens.

This was just the car I had access too at the moment for quick testing. I swung by LMR today and they are very interested and wanting to test on some much meaner cars. That and like said I'll be sending Josh one as well for a nice na testing

[PRAY]

Originally Posted by hamilton2008

IM GUNA TEST THIS THING ON MY MAX EFFORT NA MOTOR THAT TURNS 7400 RPMS IN THE NEAR FUTURE..... SO ILL HAVE A REAL WORL PORTED MSD VS THE FABRICATED INTAKE.... AND I MEASURE AT THE TIRE

No better tester for a NA set up. Let'er rip.

[hamilton2008]

Originally Posted by PRAY

No better tester for a NA set up. Let'er rip.

It scared to do it!!!

[PRAY]

Originally Posted by hamilton2008

It scared to do it!!!

You'll be alright. I have faith in you.