Originally Posted by Murlo26 (Post 345455)

I think it is just a matter of not letting the MAF read 5.0V and then Shane can tune around it however.

Originally Posted by goodhart (Post 345463)

People use 4" intakes on 16g's (2.xx"") on DSM's, why not an Evo? ;)

Originally Posted by goodhart (Post 345471)

hhmmm. How big around is the MAF?

Originally Posted by Murlo26 (Post 345462)

I just spoke with Robert at FP and he said that the FPred and FPblack will work fine with 3" intakes and no special intake is required, so who knows, but I trust him...however i trust AMS too...

Originally Posted by mlomker (Post 345469)

I was just curious about the physics behind it. I'm one of those IT guys that isn't good at math.

The heresay is that you can't scale the X's maf on a 4" housing, which is why most vendors neck them down. I'm taking that to mean that 3.5" may be fine and that's what we're looking at.

Originally Posted by scheides (Post 345476)

As far as running a 4" intake to a 2.5" inlet, it's been done for years with no ill effects. Your lowest pressure point will be in the intake, generating vacuum from the outside air (thus the sucking sound) and then as long as there is a smooth transition from the 4" intake to the 2.5" (?) intake on the turbo, the compressor wheel will do everythign in its power to just suck in and swirl the air as much as it can. As the air approaches the blades though, it will probably be straight.

I had a FP 4" intake on a bastard20g turbo w/ a 2.5" inlet on it, they made a crazy coupler just for DSMs. It was like $35 but it fit perfect and was a pretty smooth transition.

Originally Posted by goodhart (Post 345477)

so it is like a Subaru MAF

Originally Posted by ecoli (Post 345473)

Jesus Christ.

Originally Posted by scheides (Post 345476)

Will it physically fit? Yes. Could it still max out the maf sensor? Yes.




The physics are what I do best :D The maf sensor is calibrated to be installed in a 2.5" tube (or whatever size the interior diameter of the stock maf housing is), and the cross-sectional area of that tube. The bigger the tube, the more cross-sectional area, so it has to be re-calibrated to match said tube.

As far as running a 4" intake to a 2.5" inlet, it's been done for years with no ill effects. Your lowest pressure point will be in the intake, generating vacuum from the outside air (thus the sucking sound) and then as long as there is a smooth transition from the 4" intake to the 2.5" (?) intake on the turbo, the compressor wheel will do everythign in its power to just suck in and swirl the air as much as it can. As the air approaches the blades though, it will probably be straight.

I had a FP 4" intake on a bastard20g turbo w/ a 2.5" inlet on it, they made a crazy coupler just for DSMs. It was like $35 but it fit perfect and was a pretty smooth transition.

Originally Posted by scheides (Post 345480)

*hug*

Originally Posted by turbotalon1g (Post 345495)

so u got this figured out?

Originally Posted by Murlo26 (Post 345537)

So Michael at ETS sent me an email.

Originally Posted by Murlo26 (Post 345537)

Did Shane ever try swapping mine in to yours to see where the voltage is at?

Originally Posted by ecoli (Post 345545)

ETS does not tune cars.

Read the mod list and note the intake size and intercooler size. The dyno chart looks like shit, but you get the idea.

http://forums.evolutionm.net/evo-x-d...turbo-kit.html

Originally Posted by ecoli (Post 345546)

There is no reason the MAF shouldn't max in a housing close to stock size. Mitsu wouldn't put some crazy oversized setup on the car. With a hotwire setup you want the MAF diameter to be somewhat close to what you need, the bigger you go the worse driveability gets and less resolution you have in the low throttle areas where you need it. All the Mustang, Subaru, Nissan, Audi, etc guys goto bigger MAF housing/pipes when they make more and more power, it isn't anything weird or new. For the Mustangs you can buy calibrated MAFs with flowsheets and the numbers that you need to plug into the MAF scaling tables in the ECU to make it easier to tune.

Also remember that someone might not notice the MAF is maxed and just try to over compensate for it by adding fuel to the main fuel table.

Originally Posted by Murlo26 (Post 345549)

You are the Yoda...i am...maybe an imperial guard at best, lol.

Originally Posted by ecoli (Post 345560)

We could do speed density on yours...

Originally Posted by mlomker (Post 345575)

The good news is that CBRD is interested in making an intake for us. He implied that they've already started prototyping one this evening.

I'm pretty sure I have the highest whp BBX car to date so he wouldn't want to hold me up. :)

Originally Posted by mlomker

Have you had any cars in this power range run out of MAF?

My car seems to have maxed out an AMS 3" intake at 25-26psi @7500 rpm.

Originally Posted by bryan@GST

This one was 4.95v at 8100rpm, boost was 27psi at that point. AEM intake.

26psi seems a bit low to be hitting 5v

Originally Posted by FattyBoomBatty (Post 345753)

Evo X's have 8 calipers?

Originally Posted by scheides (Post 345904)

Is it just me or does the stock hanger position the pumps *a lot* lower in the tank than the FB hanger?