Which intake pipe and boost controller?
I'll try to explain this the best I can.
Speed density utilizes a MAP sensor for readings rather than the standard MAF sensor. In order to do that, a MAP sensor must be installed. I don't know about EDM Evos, but I think there should be a MAP sensor tapped in the intake manifold from the factory.
This MAP sensor should be upgraded to a 4 bar MAP sensor. I think the factory one is a 3 bar, not sure. Anyhow, if you're not going past 25 psi then you should be fine with the factory MAP sensor IF I'm correct in it being a 3 bar MAP sensor. If it's less then you'll need to upgrade.
The MAF sensor gets deleted. Some tuners will ask for an AIT sensor (Air Intake Temperature) to be installed to complete the speed density tune, others will utilize the factory fuel temperature sensor. Again, I don't know much about the EDM Evos, but I don't think they came with fuel temperature sensors, meaning you'll be obliged to install an AIT sensor that gets connected to the factory MAF cable.
Now think of it this way, do I want to spend money on a Speed density setup, which costs around $300 in parts only for a few more ponies, or should I spend this money on something else?
The speed density conversion really shines when you've surpassed the bolt-on modification stage.
However, there is an upside to a speed density conversion. IF you ever get a boost leak with a MAF sensor, bad things happen, i.e the car will sometimes stutter / shudder / bog or whatever you want to call it. With a speed density conversion, even if your intercooler pipe is not bolted on, it will still run like normal.
Speed density utilizes a MAP sensor for readings rather than the standard MAF sensor. In order to do that, a MAP sensor must be installed. I don't know about EDM Evos, but I think there should be a MAP sensor tapped in the intake manifold from the factory.
This MAP sensor should be upgraded to a 4 bar MAP sensor. I think the factory one is a 3 bar, not sure. Anyhow, if you're not going past 25 psi then you should be fine with the factory MAP sensor IF I'm correct in it being a 3 bar MAP sensor. If it's less then you'll need to upgrade.
The MAF sensor gets deleted. Some tuners will ask for an AIT sensor (Air Intake Temperature) to be installed to complete the speed density tune, others will utilize the factory fuel temperature sensor. Again, I don't know much about the EDM Evos, but I don't think they came with fuel temperature sensors, meaning you'll be obliged to install an AIT sensor that gets connected to the factory MAF cable.
Now think of it this way, do I want to spend money on a Speed density setup, which costs around $300 in parts only for a few more ponies, or should I spend this money on something else?
The speed density conversion really shines when you've surpassed the bolt-on modification stage.
However, there is an upside to a speed density conversion. IF you ever get a boost leak with a MAF sensor, bad things happen, i.e the car will sometimes stutter / shudder / bog or whatever you want to call it. With a speed density conversion, even if your intercooler pipe is not bolted on, it will still run like normal.
Benefit to this is you can log the true boost pressure in the intake then ( up to 3 bar )....other wise you will need an aftermarket 4 bar like th Omnispeed one.
It can also be used for SD conversion as Faisalm says as you will need it along with an AIT sensor. Check the SD threads for this.
Thread Starter
Evolving Member
Joined: Jun 2014
Posts: 287
Likes: 2
From: Near Cambridge, UK
^ oh ok, another thing to look into lol. Cheers
^^Ok thanks. Maybe I'll see if I can get a deal on an intake and intercooler if I don't go speed density... I'd really rather try and avoid importing bits because tax will be a slap in the face if I get collared for it, but I'll have to see what's what
^^Ok thanks. Maybe I'll see if I can get a deal on an intake and intercooler if I don't go speed density... I'd really rather try and avoid importing bits because tax will be a slap in the face if I get collared for it, but I'll have to see what's what
Last edited by D1andonlyantman; Jun 25, 2014 at 07:38 PM.
Evolved Member
Joined: Apr 2011
Posts: 851
Likes: 2
From: US
Yeah, after a quick google i think it's roughly 10%, but that's based on an article that's a few years old. Is ethanol a good thing? What brand intercooler should I look for? I've heard about some pretty crappy fitting ones and would obviously want to avoid them....
ETS
Buschur Only the Buschur LICP will fit with Buschur intercoolers I think.
STM
All these intercoolers are perfect fit so you don't have to worry about any fitment issues or leakage or anything of that kind.
Yes, ethanol is a very good thing for making power.
Thread Starter
Evolving Member
Joined: Jun 2014
Posts: 287
Likes: 2
From: Near Cambridge, UK
Awesome, a fair bit of research to do it would appear lol cheers for the help, any questions I have I'll swing your way if it's all the same to you guys 
Cheers fellas.
Cheers fellas.
Thread Starter
Evolving Member
Joined: Jun 2014
Posts: 287
Likes: 2
From: Near Cambridge, UK
Alright fellas. I just spoke to evotune, a uk mapper, and they said that with my basic bolt on mods I should be looking at high 3's, early 400's so I think I'm going to stick with the earlier plan of gettin these mods done and getting it mapped and then deciding whether to buy a FMIC, speed density conversion, porting etc and then remapping again. I'm saving for a house at the minute so could do without spending the extra couple of grand if I don't need to. Thanks for the help
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