Evo X upgrades - Page 49

**mlomker** · 06-17-2010

Quote:

Originally Posted by Murlo26

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

One of the guys on EvoM suggested you can just rescale it to resolve that. Regardless of the scale, the pipe will only flow what it will flow. Why would I argue with AMS if they say that is the limit of their intake?

**Murlo26** · 06-17-2010

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...

**goodhart** · 06-17-2010

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

**mlomker** · 06-17-2010

Quote:

Originally Posted by goodhart

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

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.

**goodhart** · 06-17-2010

hhmmm. How big around is the MAF?

**mlomker** · 06-17-2010

Quote:

Originally Posted by goodhart

hhmmm. How big around is the MAF?

The current one is in a 3" pipe. They just weld a flange on the pipe and the MAF is inserted a couple inches before the conical filter.

http://www.maperformance.com/jm-fabr...nge-evo-x.html

Most aftermarket pipes keep that 3" diameter to avoid the hassle of MAF rescaling. I'm not sure how big of a pita such rescaling is for Shane but he didn't seem concerned.

**Shane@DBPerformance** · 06-17-2010

Jesus Christ.

**Murlo26** · 06-17-2010

^haha!

**scheides** · 06-17-2010

Quote:

Originally Posted by Murlo26

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...

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

Quote:

Originally Posted by mlomker

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.

The physics are what I do best

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.

**goodhart** · 06-17-2010

oh, ok, so it is like a Subaru MAF then, where it is just stuck in the side of the pipe. I was thinking it was like a DSM or Evo 8/9 MAS where it is actually part of the intake pipe.

**goodhart** · 06-17-2010

Quote:

Originally Posted by scheides

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.

**Kracka** · 06-17-2010

Quote:

Originally Posted by goodhart

so it is like a Subaru MAF

Correct.

**scheides** · 06-17-2010

Quote:

Originally Posted by ecoli

Jesus Christ.

*hug*

**Murlo26** · 06-17-2010

I am guessing Robert was thinking about the 8/9 MAF setup and not the X.

Regardless, Shane knows what's up, I will get a 3.5" one and he can scale it. Bam done.

Quote:

Originally Posted by scheides

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

The physics are what I do best

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.

**mlomker** · 06-17-2010

Quote:

Originally Posted by scheides

*hug*

To much prattling about nothing? I suppose. Trying to learn and figure things out along the way. A bit of a learning curve with these fancy cars.

turbotalon1g · 06-17-2010

I have one of them couplers if u need it. I still need to make a FS thread for all my stuff.

so u got this figured out?

**mlomker** · 06-17-2010

Quote:

Originally Posted by turbotalon1g

so u got this figured out?

I just need someone to fab a new intake for me. From what I understand it's only an issue if I want more power. The car is sitting at 430 anyway, it's not like it's boring or anything. The fuel issue is the pressing one.

I just called Full Blown. They suggested that I get the Evo over there on Saturday and they'd look at it by Monday.

**Murlo26** · 06-17-2010

So Michael at ETS sent me an email...his comments seemed to point towards the 3" shouldn't be a problem since their Evo X t3 turbo kits have a 3" MAF housing.

Did Shane ever try swapping mine in to yours to see where the voltage is at? I guess that should be step one to make sure it really is getting maxed out.

**mlomker** · 06-17-2010

Quote:

Originally Posted by Murlo26

So Michael at ETS sent me an email.

I called ETS this morning but didn't catch the guy's name. Their T3 does use a 3" MAF housing but a 4" pipe behind it. Dude could not confirm what the 3" setup could do on the max side...just referred me to Iveytune. Ivey hasn't replied yet.

If Gates had to upgrade then I have to upgrade, I figure. My car should hit the power range that his car was at...

Quote:

Originally Posted by Murlo26

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

You talk to Shane about my car more than I do. Let me know. lol.

**Shane@DBPerformance** · 06-17-2010

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