T9S1i
15+ Year Contributor
- 1,869
- 9
- Dec 16, 2004
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San Francisco,
California
i think i heard FFTEC is coming out with a revision of the manifold, but i might have heard wrong.
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Whatever happened the FFTEC SMIM airflow testing? The forum where FFTEC asked people to send in their SMIM which consists of JM Fab, Magnus, etc... was closed and I cannot find it now.
I hope FFTEC didn't leave the people who sent in their SMIM hanging.
That was FFWD, and they still have not posted the results
Ahhh... sorry I revised the post.
I remember is was two months ago right? They still have those people's SMIM?
That was FFWD, and they still have not posted the results
They haven't even updated their site in a month.
Wonder how a honed Evo 3 IM would stack up.
Link removed.
Wilson's V2 Extrude honed Evo 8 Intake Manifold is a nice piece.
Sooo yea some other people buy this thing quick! So um he will make more! and the price might drop a tad? Who knows if there still some around when I start my engine build which is a ways off since I am in Iraq then who knows.
I have a question for you guys, how much do you think is lost in performance by not using a bigger throttle body? I feel that it is kinda a waste of money to get a SMIM flanged for a standard size t-body even though some folks have made really nice power with them. Another question, what is the plenum volume on this manifold or how does it compare to other known brands like Magnus/JM race? Do you have any pics of the inside of the plenum?
I like this one since I like unconventional parts in general that you don't see on hundreds of other cars. I have a question for you guys, how much do you think is lost in performance by not using a bigger throttle body? I feel that it is kinda a waste of money to get a SMIM flanged for a standard size t-body even though some folks have made really nice power with them. Another question, what is the plenum volume on this manifold or how does it compare to other known brands like Magnus/JM race? Do you have any pics of the inside of the plenum?
It all depends what your goals are and how big of a turbo you have to determine the size of a the throttle body and the plenum size you need.
Larger plenum and bigger throttle body is best used on a big turbo and a drag built engine like twicks69's car which gain 100hp+. However if you have a 16g a SMIM is the last thing you should be thinking about. A bigger plenum and throttle body hurts the spool rate. It's please self-explanatory in the first post of the dyno results.
And about your question in comparison with JM Fab and Magnus I doubt anybody know that. As mention in the posts above we are wait for FFWD test results.
twicks69 said:I do not know. Do you have flow bench data, comparison dyno data, etc to support it?
twicks69 said:As of right now, it uses only a Mitsu bolt-on flange. All three vehicles tested were using 1G unported Throttle Bodies.
The next run of them will come with an option more than likely. Luke is also in the process of designing a straight bolt-on mitsu-style throttle body (if I remember correctly, it was 75mm), which uses all the stock sensors and is much beefier than any other comparable TB on the market for our cars.
twicks69 said:Well, in the circumstance of using the Mitsubishi TB flange on this SMIM, it was designed this way so I could be used on the most 4G63's out there with minimal modification to be used. There really are not that many people using aftermarket throttle bodies on their current setups, and there are also very few people using 3" or larger IC pipes on their setups. Most of the intercooler pipe setups out there for the DSM's use a 2.25" or 2.5" IC pipe setup. This flange is ideal for most of the cars out there, along with their horsepower levels. A 52mm 2G throttle body is 2.0472", a 60mm 1G throttle body is 2.3622". An aftermarket 70mm TB is 2.7559", 75mm is 2.9528", and a Q45 TB 90mm is 3.5433".
In my circumstance, I am running 2.5" IC pipes from the turbo outlet to the FMIC, and the FMIC to the TB -- there is absolutely no need to run a 70mm+ TB -- could there be a gain? Sure. Could the larger TB increase throttle response? Sure. Could it also decrease spoolup? Of course. I have no need to run a Q45 throttle body. If anything I might see a few HP gain -- I am not expecting to see more than 15-20HP over my 1G 60mm TB though -- and I AM making nearly 1000HP.
...
Finally, you don't need an aftermarket fuel rail, ported head or an aftermarket throttle body to make 1000HP. The stock stuff works just fine. Can you make more power over the stock stuff? Sure, but at what cost? Some of the parts are extremely well designed on our motors, and only need a few tweeks to really put down some high HP numbers. Using a stock fuel rail with a -6AN feed and return and a set of 1000cc injectors along with a walboro 255HP in-tank and a walboro 255HP in-line fuel pump will support 1000HP all day long. The stock 1G head can flow it no problem also. I would say that gains are made though when changing over to oversize valves, and cams larger than 272/272's, but that gain was less than 30whp in the big picture.
The car made over 100AWHP more on just an intake manifold swap--that is a heck of alot better bang for the buck than purchasing an aftermarket throttle body along with 3"+ IC pipes, a ported head with oversize valves, and huge cams.
Since we're crunching the numbers, why not aim for a happy medium regarding the TB? Use that 2.5" piping to its fullest (as if you're not already doing so). 60mm translates to 2.3622 inches. 2.5" translates to 63.5mm. Why not get the extra little chunk to work for you? Just a thought to put out there. IMHO, I would always like the diameter of my TB to match all of my intercooler piping.
I just see it as .1378 inches (or 3.5mm) being left out in the cold.
Since we're crunching the numbers, why not aim for a happy medium regarding the TB? Use that 2.5" piping to its fullest (as if you're not already doing so). 60mm translates to 2.3622 inches. 2.5" translates to 63.5mm. Why not get the extra little chunk to work for you? Just a thought to put out there. IMHO, I would always like the diameter of my TB to match all of my intercooler piping.
I just see it as .1378 inches (or 3.5mm) being left out in the cold.
I know this thread is really old, but I can't find the manifold on there website.. is it still around?